CA1037192A - Non-ionic polyurethane dispersions - Google Patents
Non-ionic polyurethane dispersionsInfo
- Publication number
- CA1037192A CA1037192A CA194,918A CA194918A CA1037192A CA 1037192 A CA1037192 A CA 1037192A CA 194918 A CA194918 A CA 194918A CA 1037192 A CA1037192 A CA 1037192A
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- Canada
- Prior art keywords
- groups
- molecular weight
- organic compound
- reactive
- polyurethane
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Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/564—Polyureas, polyurethanes or other polymers having ureide or urethane links; Precondensation products forming them
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/4009—Two or more macromolecular compounds not provided for in one single group of groups C08G18/42 - C08G18/64
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
- C08G18/50—Polyethers having heteroatoms other than oxygen
- C08G18/5021—Polyethers having heteroatoms other than oxygen having nitrogen
- C08G18/5036—Polyethers having heteroatoms other than oxygen having nitrogen containing -N-C=O groups
- C08G18/5042—Polyethers having heteroatoms other than oxygen having nitrogen containing -N-C=O groups containing ureum groups
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/12—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins
- D06N3/14—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyurethanes
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Polyurethanes Or Polyureas (AREA)
Abstract
Abstract of the Disclosure A polyurethane adapted for making non-ionic aqueous polyurethane dispersions without an added emulsifier is pre-pared by reacting a conventional organic diisocyanate and an organic compound having groups reactive with isocyanato groups and having a side chain which contains repeating {O-CH2-CH2}
groups. Latices prepared from the polyurethane may be used to prepare films and coatings having improved physical properties.
groups. Latices prepared from the polyurethane may be used to prepare films and coatings having improved physical properties.
Description
Mo-1412-H
LeA 14,929 10;~719Z
NON-IONIC POLYURETHANE DISPERSIONS
This invention relates generally to polyurethanes and more particularly to an improved polyurethane for making disper-sions, to a method for making them and to films and coatings prepared therefrom.
It has been disclosed before that polyurethanes and polyurethane ureas can be emulsified in water with emulsifiers and under the action of high shearing forces to form latices (e.g. as describéd in U.S. Patent Specification No. 3,294,724).
The preparation of these latices is difficult and requires close technical control of the process. Moreover, the resulting latices have the disadvantage that films produced therefrom have a poor resistance to water because of the use of an emulsi-fier. The latices also are often not of a sufficiently fine state of subdivision to be stable against irreversible sedi-mentation of the polyuret~ane.
Latices prepared with polyurethane ionomers which contain an internal dispersing agent in the form of ionic groups built into the molecule are very finely divided stable disper-sions and do not have these disadvantages. These known latices (see e.g. U.S. Patent Specification No. 3,479,310 or ~ritish Patent Specification No. 1,076,688) have the advantage of pos-sessing the excellent properties of linear polyurethane elas-tomers, such as high elasticity, high tensile strength, high resistance to hydrolytic influences and weathering and high resistance to exposure to light, combined with the ability to be worked up from solvent-free media. The danger of a fire or explosion because of the presence of a volatile solvent is avoided and reover, it is not necessary to destroy or recover organic solvents which may be harmful to the health and may `~
LeA 14,929 adversely affect the environment. Such latices also have a high solids content.
Although these dispersions have already become tech-nically important, they have two properties arising from their nature as polyelectrolytes which are somewhat disadvantageous and may jeopardize their universal acceptance. They are sensi-tive to electrolytes and to cold temperatures.
Other dispersions have been disclosed and described in German Offenlegungsschrift Nos. 2,141,805 and 2,141,807 in which the dispersibility is brought about not by groups of an ionic nature but by centers which make use of the hydrophilic character of polyethylene oxide ethers. These dispersions, insofar as they do not contain dispersifying groups of an ionic nature, are pre-pared by reacting a trifunctional isocyanate prepolymer (obtained from a trifunctional polypropylene oxide polyether and the stoi-chiometrically required quantity of a diisocyanate) with alcohol i mixtures which contain monofunctional polyethylene oxide ethers in such a manner that the reaction mixture contains one mol of the mixture of monofunctional alcohols to one mol of isocyanate prepolymer. The resulting mixture which contains NOO-groups is dispersed in water by the action of shearing forces and under-i goes an increase in molecular weight due to the conventional re-actions between NCO-groups and difunctional reactive hydrogen containing compounds (e.g. diamines). According to the examples given in German Offenlegungsschrift No. 2,141,805 and in Example 4 of German Offenlegungsschrift No. 2,141,807 films produced from these dispersions have ~-moduli of about 5 kg.wt./cm2 and tensile strengths of about 10 kg.wt./cm2 at elongations at break of 200%. Such dispersions are unsuitable for making coatings or coverings having good physical properties because such coatings must have a minimum tensile strength of 150 kg.wt./
cm2 and minimum elongation at break of about 400~.
It is therefore an object of this invention to provide a completely new method of obtaining polyurethanes which can be LeA 14,929 -2-` 103~19Z
dispersed in water without the aid of dispersing agents and poly-urethane dispersions obtained from these polyurethanes which are free from the above disadvantages. Another object of the inven-tion is to provide a process for producing noneionic, aqueous polyurethane dispersions which are free from emulsifiers. Another object of the invention is to provide improved polyurethane lat-ices. Still another object of the invention is to provide poly-urethane latices adapted for use in the preparation of coatings or coverings having improved physical properties.
The foregoing obiects and others are accomplished in accordance with this invention, generally speaking, by providing a polyurethane having a micromolecular structure including a side chain containing repeating ~O-CH2-CH2~ groups and attached to the micromolecular chain through specific groups described hereinafter.
The polyurethane provided by the invention is prepared by a process wherein an organic diisocyanate is reacted with an organic compound having a molecular weight of from about 500 to about 6000 which is difunctional for the purpose of the isocyanate polyaddition reaction and contains terminal hydrogen atoms which are reactive with isocyanato groups but does not contain side chain polyethylene oxide units and with an organic compound which is difunctional for the purpose of the isocyanate polyaddition reaction and contains terminal hydrogen atoms which are reactive with isocyanate groups as well as side chain polyethylene oxide units. The reaction mixture may contain, optionally, a conven-tional chain-lengthening agent having a molecular weight below 500 (hereinafter called "optional chain extender") and other suitable conventional auxiliary agents and additives used in polyurethane chemistry.
The reactions of the organic polyisocyanate with the organic compound having groups containing reactive hydrogen atoms LeA 14,929 determinable by the Zerewitinoff method having a molecular to about_~nnnJ
weight from . about 500r~a-~;~h-F~e chain extender may be conducted under substantially anhydrous conditions and the resulting polyurethane may then be converted later into an aque-ous dispersion or the polyurethane may be prepared by a pre-polymer process in which an excess of organic polyisocyanate is reacted with the organic compound having reactive hydrogen atoms and a molecular weight of at least about 500 in a first step under substantially anhydrous conditions and the prepolymer is then chain extended in the presence of water while forming a dispersion. Any difunctional organic compound which contains : reactive hydrogen atoms and side chain polyethylene oxide units of the following general formula (I) may be used:
R"' R"' Ho-cH-cH2-N-cH2-cH-oH (I) cO-NH-R-NH-co-o ( CH2-CH2-O ~ H2-CH2-X-R' in which R represents a divalent group obtained by removing the iso-cyanate groups from a diisocyanate with a molecular weight : of from about 112 to about 1000.
X represents oxygen or -NR"-R' and R" are identical or different and represent a monovalent hydrocarbon group containing from 1 to 12 carbon atoms, R"' represents hydrogen or a monovalent hydrocarbon group con-taining from 1 to 8 carbon atoms, and n represents an integer of from 4 to 89.
The invention also provides aqueous polyurethane dis-persions obtainable by this process.
The invention also provides a process for producing thermo-plastic, non-ionic polyurethane elastomers with a substantially linear molecular structure which are dispersible in water LeA 14,929 -4-~037~92 wherein an organic diisocyanate is reac~ed with a difunctional organic compound having terminal hydrogen atoms which are reac-tive with isocyanate groups, a molecular weight of from about 500 to about 6000 which is free from side chain polyethylene oxide units and with a difunctional compound having both term-inal hydrogen atoms which are reactive with isocyanate groups and side chain polyethylene oxide units. Conventional chain-lengthening agents with a molecular weight below 500 (optional chain-lengthening agents) as well as the usual auxiliary agents and additives customarily used in polyurethane chemistry may also be used. The difunctional organic compounds containing terminal hydrogen atoms which are reactive with isocyanate groups and contain side chain polyethylene oxide units are those of the general formula I given above.
The invention also comtemplates the polyurethanes ob-tainable by this process.
Any organic diisocyanate of the general formula R(NCO)2 in which R represents an organic group such as can be obtained by removing the isocyanate groups from an organic diisocyanate with a molecular weight of from about 112 to about 1000, prefer-ably about 140 to about 400 may be used. Diisocyanates which are particularly suitable for the process provided by the inven-tion are those of the general formula R(NCO)2 in which R repre-sents a divalent aliphatic hydrocarbon group containing 4 to 18 carbon atoms, a divalent cycloaliphatic hydrocarbon group con-taining 5 to 15 carbon atoms, a divalent aromatic hydrocarbon group containing 6 to 15 carbon atoms or an araliphatic hydro-carbon group containing 7 to 15 carbon atoms. The following are examples of typical representatives of these organic diisocya-nates which are particularly suitable for the process according to the invention: tetramethylene diisocyanate, hexamethylene di-isocyanate, dodecamethylene diisocyanate, cyclohexahe-l,3-diisocyanate, LeA 14,929 -5-cyclohexane- 1,4-diisocyanate, 1-isocyanato-3-isocyanatomethyl-3,5,5-trimethyl cyclohexane and 4,4'-diisocyanatodicyclohexyl-metha~e as well as aromatic diisocyanates such as 2,4-diisocyanato-toluene and 2,6-diisocyanatotoluene and mixtures of these isomers, 4,4'-diisocyanatodiphenylmethane, 1,5-diisocyanatonaphthalene and the like.
Any suitable difunctional organic compound having term-inal groups which contais hydrogen atoms determinable by the Zere-witinoff method and has a molecular weight in the range of about 500 to about 6000, preferably about 600 to 3000, may be used.
Any suitable dihydroxy polyesters known per se in poly-urethane chemistry which is obtained by esterification of a di-carboxylic acid such as succinic acid, adipic acid, suberic acid, azelaic acid, sebacic acid, phthalic acid, isophthalic acid, terephthalic acid, tetrahydrophthalic acid, and the like, and diols such ethylene glycol, propylene-1,2-glycol, propylene-1,3-glycol, diethylene glycol, butane-1,4-diol, hexane-1,6-diol, octane-l, 8-diol, neopentyl glycol, 2-methylpropane-1,3-diol or the various isomeric bis-hydroxymethyl cyclohexanes and the like may be used.
Any suitable polylactoneknown per se in polyurethane chemistry, e.g. polymers of E-caprolactone and one of the above-mentioned dihydric alcohols may be used.
Any suitable polycarbonate known per se in polyurethane chemistry which may be obtained, for example, by reacting the above-mentioned diols with diaryl carbonates or phosgene may be used.
Any suitable polyether known per se in polyurethane chemistry, e.g. polymers or copolymers of styrene oxide, propylene oxide, tetrahydrofuran, butylene oxide or epichlorohydrin, which polymers or copolymers are prepared from divalent starter mole-cules such as water, the above-mentioned diols or amines which contain 2 N-H bonds may be used. A certain amount of ethylene LeA 14,929 -6-10;~7192 oxide may also be used in the preparation of these compounds, provided the polyether used does not contain more than about 10 percent by weight of ethylene oxide. In general, however, polyethers which have been obtained without the addition of ethylene oxide are used.
Any suitable polythioether, polythio mixed ethers and polythioether esters known per se in polyurethane chemistry may be used.
Any suitable polyacetal known per se in polyurethane chemistry, for example those obtained from the above-mentioned diols and formaldehyde may be used.
Any suitable difunctional polyether ester containing terminal groups which are reactive with isocyanate groups may be used.
It is preferred to use dihydroxy polyesters, dihydroxy polylactones and dihydroxy polycarbonates as the organic compound having a molecular weight of at least about 500 in the process according to the invention.
Any suitable chain-lengthening agents having a molec-ular weight below 500 may be used as optional chain extenders in the process according to the invention for producing the poly-urethanes which can be dispersed without the aid of dispersing agents such as, for example, the low-molecular weight diols which have been described for the preparation of dihydroxy polyesters and the like, or also diamines such as diaminoethane, 1,6-dia-minohexane, piperazine, 2,5-dimethyl piperazine, 1-amino-3-aminoethyl-3,5,5-trimethyl-cyclohexane, 4,4'-diaminodicyclohexyl-methane, 1,4-diaminocyclohexane or 1,2-propylenediamine or also hydrazine, aminoacid hydrazides, hydrazides of semicarbazidocar-boxylic acids, bis-hydrazides, bis-semicarbazides, and the like.
LeA 14,929 -7-~æ ..
In order to synthesize the new self-dispersible poly-urethanes, it is an essential feature of the invention to use organic compounds which contain both hydrogen atoms capable of reacting with isocyanate groups and side chain ethylene oxide units, as represented by the above general formula I.
These compounds having ethylene oxide derived side chains which are essential to the invention will hereinafter be referred to as "hydrophilic chain-lengthening agents".
Preparation of the hydrophilic chain-lengthening agents may be carried out, for example, as follows:
Monovalent alcohols or monovalent phenols of the gen-eral formula R'-X-H (X = 0) are first prepared in known manner or the corresponding monovalent alcohols containing polyethylene oxide units as repre~ented by the formula HO--tCH2-CH2-O ~ CH2 CH2 X R (II) 1, are prepared by ethoxylation of secondary amines of the general formula R'-X-H (X `-NR"-). In the above formula II, R' and R"
! represent identical or different hydrocarbon groups, in partic-ular Cl to C10 alkyl groups, C4 to C8 cycloalkyl groups, C6 to C12 aryl groups or C7 to C10 aralkyl groups.
l Any suitable alcohol or phenol may be used such as, ! for example, methanol, ethanol, n-propanol, n-hexanol, n-decanol, isopropanol, tertiary butanol, phenol, p-cresol, benzyl alcohol or the like. Any suitable secondary amine may be used such as, for example, dimethylamine, diethylamine, dipropylamine, N-methyl-hexylamine, N-ethyl-decylamine, N-methyl-aniline, N-ethyl-benzylamine, N-methylcyclohexylamine, or the like.
The quantity of ethylene oxide grafted into the mole-cule may vary within wide limits. The polyethylene oxide chains generally consistoffrom about5 to about 90 andpreferably about20 LeA 14,929 -8-- . .
103,719Z
to about 70 ethylene oxide units.
In the second reaction stage, the resulting monovalent alcohols which contain polyethylene oxide units are reacted with a large excess of one of the diisocyanates of the general form-ula R(NCO)2 given above as examples, followed by removal of thediisocyanate excess to obtain the corresponding monoisocyanate which contains polyethylene oxide units as represented by the general formula oCN_R_NH_co--o--~cH2--cH2-O ~ CH2--CH2--X--R' (III) In this second reaction step, the diisocyanate is pre-ferably used in a two to ten-times molar excess, preferably a three to four-times molar excess, in order to prevent the forma-tion of the corresponding bis-urethanes which are free from NCO-groups. This second reaction step is preferably carried out by adding the monovalent alcohol which contains polyethylene oxide units to the diisocyanate in the reaction vessel. The reaction may be carried out at from about 70C to about 130C.
Subsequent removal of the diisocyanate excess is preferably carried out by thin-layer vacuum distillation at about 100C
to about 180C.
The hydrophilic chain-lengthening agent is then ob-tained in the third reaction step by reacting the above described monoisocyanates which contain polyethylene oxide units ~; with dialkanolamines of the general formula R"' R"' .
HO-CH-CH2-NH-CH2-CH-OH (IV) in which R"' has the meanings already indicated above. In this third reaction step, the reactants are preferably used in stoi-chiometric proportions. This step of the reaction is preferably LeA 14,929 -9-~037i9Z
carried out at temperatures between about 0C and about 50C, preferably at about 15 to about 30C. Suitable dialkanolamines of the general formula shown above are, for example, diethanola-mine, dipropanolamine (R"' = C~3), bis-(2-hydroxy-2-phenyl-ethyl)-amine and the like.
The use of components which are exclusively difunc-tional is an essential feature of the process according to the invention for producing the self-dispersible polyurethanes and for preparing non-ionic polyurethane dispersions. As is known from the chemistry of high polymer latices, however, in some cases the addition of very small quantities of trifunctional low-molecular weight compounds, e.g. trifunctional isocyanates or trifunctional chain-lengthening agents, may improve the proper-ties of the product. However, such trifunctional components should not be used in quantities of more than one equivalent percent, based on all the building components which take part in the polyaddition reaction.
The process provided by the invention for producing the self-dispersible polyurethanes may be carried out by the known methods of polyurethane chemistry, either by the one-stage process or by the two-stage process (prepolymer process).
The reactants for producing the self-dispersible poly-urethanes may be used in an equivalent ratio of isocyanate groups to groups which are reactive with isocyanate groups of between about 0.8:1 and about 2.5:1, preferably between about 0.95:1 and about 1.5:1. If an excess of NCO is used, the compounds obtained obviously contain NCO-groups which when the compounds are con-verted into an aqueous dispersion continue to react with water by a chain-lengthening reaction to yield the dispersed end prod-uct. The equivalent ratios given above therefore include all the components which take part in the synthesis of the polyure-LeA 14,929 -10-10~719Z
tilanes according to the invention, including the chain-lengthen-inq a~cnt with amino groups which may be used in the form of aqueous solutions (see the method described below for producing polyurethane dispersions by the prepolymer process) but not in-cluding that proportion of the water used for dispersing thepolyurethanes which reacts by a chain-lengthening reaction with any compounds present which contain NCO-groups.
The hydrophilic chain-lengthening agents may be used in quantities in the process according to the invention so that the finished polyurethane contains about 3~ to about 30% by weight preferably about 5~ to about 20% by weight, of side chain poly-ethylene oxide segments.
Both the one-stage method and the two-stage method of the process may be carried out either with or without solvents.
Any suitable organic solvent may be used, especially if production of the polyurethanes is intended to be accompanied or followed by conversion of the polyurethanes into an aqueous dispersion, including, for example, those solvents which are miscible with water and inert towards isocyanate groups and have a boiling point below 100C ! for example, acetone or methyl ethyl ketone.
If the one-stage process is employed, the difunctional organic compounds which have a molecular weight of from about 500 to about 6000 and contain groups capable of reacting with isocyanate groups, are preferably mixed with the hydrophilic chain-lengthening agent and with the optional chain-lengthening agent having a molecular weight below 500. The chain-lengthen-ing agents with a molecular weight below 500 which are optionally used in the one-stage process may be the diols disclosed above for the preparation of dihydroxy polyesters. The diisocyanate component is then added to the resulting mixture without solvents, LeA 14,929 -11-and reaction of the mixture is then brought about, preferably at temperatures of about 50 to about 150C, optionally after the addition of catalysts commonly used in polyurethane chemis-try. The quantity of diisocyanate component used is such that the NCO/OH-ratio is between about 0.8 and about 1.05. The vis-cosity of the mixture rises during the reaction, and one of the aforementioned solvents is therefore gradually added to the mix-ture. An organic solvent solution of the completely reacted polyurethane is thus obtained and the concentration of this so-lution is preferably adjusted to a solids content of about 10 toabout 50 percent by weight, preferably about 15 to about 40 per-cent by weight.
Conversion of the dissolved polyurethane elastomers into an aqueous dispersion may then be carried out conveniently by adding water to the stirred solution. In many cases, the j solution then passes through the phase of a water-in-oil emul-;l sion until it passes a viscosity maximum, at which point there is a sudden changeover into an oil-in-water emulsion. After removal of the solvent by distillation, a purely aqueous stable dispersion is left behind.
If the two-stage process is employed, an NCO prepoly-mer is preferably first prepared from excess diisocyanate, a higher molecular weight compound with groups capable of reacting with iso-cyanate groups of the type described above and hydrophilic chain-lengthening agent, using either a solvent-free melt of the reac-tants or using solvents and maintaining an NCO/OH-ratio of be-tween about 1.1:1 and about 3.5:1, preferably between about 1.2:1 and about 2.5:1. If no solvent is used, the NCO prepolymer is preferably taken up in a suitable solvent. The resulting solu-tion of prepolymer may then be reacted in known manner with theoptional chain-lengthening agent which has a lecular weight LeA 14,929 -12-~037~9Z
below 500 such as those given as examples above. To prepare the polyurethane dispersions according to the invention, it is advisable to use a special variation of the two-stage process in which the chain-lengthening agent, in this case preferably one of the above-mentioned diamines or hydrazine derivatives, dissolved in a small quantity of water or a mixture of water and solvents, is added to the above-described solution of the NCO
prepolymer in such quantities that the NCO/OH ratio is between about 2.5 and about 1.05. This reaction may be carried out at room temperature or preferably at about 25 to 60C. Subsequent addition of the remainder of the water followed by removal of the solvent yields the polyurethane dispersion. In this varia-tion of the process, the optional chain-lengthening agent may, if desired, be dissolved in the total quantity o water subse-quently present in the dispersion (50% to 200% by weight based on solid polyurethane).
In principle, the polyurethane elastomers provided bythe invention can also be converted into dispersions by other methods, for example, dispersion can be carried out without using solvents, e.g. by mixing the solvent-free elastomer melt with water in an apparatus which is capable of producing high shear-ing gradients, or it can be carried out with very small quanti-ties of solvents to act as plastici~ing agents, again using the same apparatus, or it can be carried out with the aid of non-mechanical dispersing agents such as sound waves of extremelyhigh frequency. Also, in the case of polyurethane ureas, chain-lengthening can be carried out after conversion of the propolymer into an aqueous emulsion.
Polyurethane dispersed in accordance with the inven-tion have an average particle size of about 0.5 m~ to about 5 ~,preferably about 100 to 500 m~, the optical dispersion or Tyndall LeA 14,929 -13-i0;~7~9Z
effect obviously beginning to appear at dispersions with particle sizes below 500 m~.
The rheological characteristics of the dispersions, which will not be discussed in detail here, depend on the par-ticle size and the concentration of the dispersion. As the par-ticles become very small, the viscosity increases and moreover with particles measuring less than about 100 m~, the flow limit progressively increases with decreasing particle size (Bingham body ). Regardless of this relationship, the viscosity in-creases with increasing concentration which may be as high as70% in this class of dispersions, the viscosity in some cases reaching a value of 50 c~.
The dispersions are insensitive to electrolytes and consequently the latex particles may be subjected, for example, to acid catalyzed cross-linking with formaldehyde or formalde-hyde derivatives; they may also be pigmented with electrolytically active pigments or dyes. Another property of the dispersions provided by the invention is their ability to be coagulated by heat which enables them to be worked up into foils or films which are permeable to water vapor simply by heating them.
The dispersions may be blended with other dispersions, e.g. with dispersions of polyvinyl acetate, polyethylene, poly-styrene, polybutadiene, polyvinyl chloride, co-polymer synthetic resins or the like.
Any suitable dispersion of filler, plasticize~, pigment, carbon black, silica sol, aluminium, clay, asbestos or the like may also be incorporated in the dispersions.
The dispersions of the polyurethane compounds are stable in water and can be stored and transported and worked up at any LeA 14,929 -14-1037~92 later date, e.g., into shaped products. They generally dry di-rectly to dimensionally stable synthetic coatings although the products of the process may also be shaped in the presence of known cross-linking agents. The polyurethanes obtained vary in their properties according to the elected chemical composition and the urethane group content. They may be obtained in the form of soft, sticky compounds or thermoplastic or rubbery elas-tic products within a wide range of hardness up to glass-hard duroplasts. The hydrophilic character of the products may also vary within wide limits. The elastic products can be worked thermoplastically at elevated temperatures, for example 100 to 180C.
The products of the process are suitable for coating, covering or impre~nating woven or non-woven textiles, leather, paper, wood, metal, ceramic, stone, concrete, bitumen, hard fiber, straw, glass, porcelain, synthetic resins of various kinds of glassfibers to produce antistatic and crease-resistant finishes or they may be used as binders for fleeces, adhesives, adhesify-ing agents, laminating agents, agents to render products hydro-phobic, plasticizers or binders, e.g. for corkmeal or sawdust,glassfibers, asbestos, paper-type materials, plastics or rubber waste or ceramic materials or as auxiliary agents in cloth-printing and in the paper industry, as adhesives for polymers, as sizing agents, e.g., for glass fibers, and for finishing leather.
For these purposes, the dispersions or pastes are pre-ferably applied to a porous support which subsequently remains bonded to the finished product, e.g. woven or non-woven textiles or fiber mats, felts or fleeces or also paper fleeces, foam plas-tics -oils or split leathe:r, substances which cause immediate LeA 14,929 -15-lO~9Z
solidification of the coating by virtue of their absorbent ac-tion. The materials are then dried at elevated temperature and if necessary pressed. Drying may also be carried out on smooth, porous or non-porous materials such as metal, glass, paper, card-board, ceramic materials, sheet steel, silicone rubber or alum-inium foil, in which case the finished sheet product is then lifted off and used as such or applied to a substrate by the reversal process by glueing, flame-laminating or calendering.
Application by the reversal process may be carried out at any time.
The properties of the products of the process can be modified by the addition of vinyl polymers or active or inactive fillers, for example polyethylene, polypropylene, polyvinyl ace-tate or ethylene/vinyl acetate copolymers which may be saponified lS or partly saponified and/or grafted with vinyl chloride; styrene/
butadiene copolymers, ethylene (graft) copolymers, carbon black, silica, asbestos, talcum, kaolin, titanium dioxide, glass in the form of powder or fibers, and cellulose. The end product ; may contain up to 70% of such fillers, based on the total quan-tity of dry substances, depending on the required properties and the purpose for which the end products are to be used.
Dyes, pigments, plasticizers or additives which influ-ence the flow properties may, of course, also be added.
After the products have been applied by the various techniques, they may be dried at room temperature or at elevated temperature. The drying temperature to be selected in each in-dividual case, which depends not only on the chemical composition of the material but above all on the moisture content, the dry-ing time and the thickness of the layer, can easily be deter-mined by a preliminary test. For any given heating time, thedrying temperature must in any case be below the solidification temperature.
LeA 14,929 -16-1~3719Z
The sheet structures may be coated subsequently with a finish to increase the resistance of the surface.
Aqueous dispersions or solutions are again preferably used for this purpose.
Very hard polyurethanes obtained from finely divided dispersions and sols are suitable for use as stoving lacquers and in some cases even as air-drying lacquers. They combine the advantages of great hardness and elasticity with high gloss, and when used with aliphatic diisocyanates they also have high light fastness and resistance to weathering.
The following examples serve to describe the composi-tion and preparation of some physical properties ol the products.
:' LeA 14,929 -17-Example 1: 103719Z
~, 370 parts of a linear polyester diol of adipic acid, hexanediol and 2,2-dimethylpropane-1,3-diol having an OH-number of about 66 were mixed with 53 parts of a compound (hereinafter termed dispersing agent A) of one mol of a polyethylene oxide ether with OH-number 49 which had been initiated on n-butanol, one mol of hexamethylene-1,6-diisocyanate and one mol of bis-(~-hydroxyethyl)-amine, and to this mixture were added 111 parts of 3-isocyanatomethyl-3,5,5-trimethyl-cyclohexylisocyanate and the mixture was heated to a temperature of 100C. Heating was continued for 3 hours with stirring and the exclusion of atmos-pheric moisture. The isocyanate content of the mixture dropped to 4.7% during this time. The mixture was then cooled to 60C
and diluted with 1020 parts of acetone.
A solution of 15 parts of diaminoethane in 125 parts of water was prepared and rapidly added to the reaction solution and homogeneously mixed with stirring. 700 parts of water were rapidly added with vigorous stirring to the resulting clear solu-tion which contained 35% solids, a milky white dispersion of the solid in water being formed. The dispersion contained acetone and it had a brownish, translucent appearance when viewed in thin layers. After removal of the acetone by distillation under a pressure of 100 mm.Hg,a pure, aqueous dispersion of the poly-urethane urea solid was left behind. It had a solid content of 40~.
The solid of this dispersion contained 7.7% by weight of polyethylene oxide ether units.
When the dispersion was poured out to form a film 100 ~ in thickness and the water was completely removed by evap-oration, a clear, smooth, elastic film 40 ~ in thickness was LeA 14,929 -18-obtained. It had the followl1ng~mec~anical properties:
Tensile strength: 180 kg.wt./cm2 Elongation at break: 910 %
The products of Examples 2 to 19 summarized in the following table were prepared by the process described in Example 1.
LeA 14,929 -19-10~719Z
~0 ~ ~ ' U~ ~D 1~ ~ ~ O ~1 x æ
~o O
a) s ~ ~ O O O o O o o o o o R o o o o o oo o o o o ~ S'l O ~ ~ D O~ Il~ r~ a~ I~ ~o a~ o N t`~ ~1 ~I ~ ~1 ~_1 ~1 ~1 ~I
O~
o a~ ~ ~
~1 C~ U~ ~D ~r er o o n S oo ~1 Il~ oo oO 1- CO ~ ~ ~D
3a) _1 ~1 O O-Xd~O c`P d~ d~ ~ ~ ~P dP d~ dP o~P
~ p~ o ~ P~ U~ O o U~ o o 0~ ~ u~ u~ ~ ~r er ~r ~ ~ ~
,~ N ~ 't' N N ~1 O O N O
t' o ~ Z ~ Su S~ ~ ,~ _~ _~ ,~ _~ ,~ ~ ,~ ,~ ,~
rl U
O
O C~
t) z o .~
H
S O tJI C!l ~ ~ H H ~I C~ 1~ t~ 1:
,~ ~o~
:- O O ~ HH t`~
~ ~ O Ul H N ~`1 N N N N N N ~ N
t7~ la O n~ ` H
~1 ~I Z R H H
H O IY ~ ~1 ~3 a a a ~ ~ a a a a a . .
a~ H ~1~ m m m m m ~ ~ ~ m ~:
a ~ ~ O
,~ s~ a~ I I u s~
.. o a~
~1 ~ U~ X N ~ ~ U ~ U~ X U 0 ~1 O H O a) a) ` ~ (d ~ ~ a) `-rl ~t ~ ra U -~ O ~ O O ~1 1 -I O ~
~d ~ ~ .¢ou:~ o~O'~
LeA 14, 929 -20-10;~7192 ~ Z N
W
O O O ~
E~ u~ a) 111 .,1 ~ Ul .C
~ ~D ~ ~
3 :~ ~ ,~ ,1 OD
o ~ ~ ~1 O O X d~ ~ O O d o O
~ ~ ~ I` U~ U~ ~i P g ~ R. U ~ ~ ~1 ~ ~i ~ ~ 0 0 E~ O Z O
~1 H tJ~ ~ ~I:
P o o ~ H u~ u~ t~ u~
H t~ ~ .t'~ ~I
~1 ~ Z .4 H H
~:
HH à w à
a ~
_i H ~J m o o m ~ ~q~ O
E~ ~ ~ ~ ~
~ o ~ ~ ~ o I O ~ ~ , D o LeA 14, 92 9 -21-~o~ ~
~ -l ~ ~o D U~ r-~s~o~ ~ ~ ~ o ~o ~ ~ oo s~
~a ~
c.C :~ 3 ~ u:> oo u~ r- E3 13 o~a . . . .
O O-C dP ~ O I~ I~ I` I~
U ~O~ o o dP dP
~ ~ ~ ~r `, C ~D~-~-C~ ~
,~Q) U)U~ U~
~ ~ ~ ~ ~ _l i ~i -~ c C~ l ~ a~
~uzo~ o ~
: c o:~
~ H a a a c~ ~ H ~ O
S~ ~:,o ~
~ o 8 a H U rC
~ ~ H `1 ~ ~: O ~ I O
~ 0 ~ ` H N ~i ~J ~r~ Q~ U
X
à Q à Jc u~ ~ x . ~ o . c ~ o u .~ rl ~ C U~
HH ~ ~J m m m m ~ c ~
.4 ~ I o a ~ l I l ~n tn ~ o ,, ~ o ~ o ~300,~ ~, = U ~
o ~ P~ J' c o ~ c O ,¢ p4 c~ a r~ ~ ~ H
IeA 14, 929 -22-~92 Example 20:
234 parts of a polyester diol of adipic acid and di-ethylene glycol with OH-number approximately 40 are mixed with 49.5 parts of "dispersing agent A" from Example 1 in the solvent-free melt at 60c. 15.7 parts of ~utane-1,4-diol were then addedand also homogeneously mixed. 25.2 parts of an 80:20 mixture of tolylene-2,4-diisocyanate and tolylene-2,6-diisocyanate were then added all at once to this mixture with stirring. The temperature was then raised to 90C. The viscosity of the mixture then rapid-ly rose and reached a value of about 20,000 cP in 15 minutes.
50 parts of acetone were then added, whereupon the temperature dropped to about 70C with vigorous boiling. The viscosity fell at this stage but then started to increase again slowly, where-upon a further 50 parts of acetone were added.
This process was repeated until 6000 parts of acetone had been added. A clear solution of a polyether polyurethane in acetone with a solids content of 35% was obtained. This solu-tion was cooled to 30C and 525 parts of water were then added all at once with vigorous stirring. A bluish-white, medium viscosity dispersion of the solid in the acetone/water mixture was formed.
After removal of the acetone under a vacuum of 100 mm.Hg, a viscous purely aqueous dispersion of the polyester polyurethane solid remained behind. It had a concentration of 40%. The solid con-tained 11.4% of the polyethylene oxide polyether which had been initiated on butanol.
.:
When the dispersion was poured out to form a film 100 in thickness from which the water was then completely removed by evaporation, a clear, elastic, very soft and slightly sticky film was left behind which had a thickness of 40 ~ and the fol-lowing mechanical properties:
LeA 14,929 -23-1037~
Tensile strength: 170 kg.wt./cm2 Elongation at break: 1090 %
The products in the following examples 21 and 22 were prepared by the process described in Example 20.
LeA 14,929 -24-: 1037~9Z
aJ .
~ . .
~Z , ~ o o o CO o a~ ,~
c~
o U~ U~
O CO
E~ tn a ~ ~ _l , a~
dP ~ ~ O
O ~ X ~ ~ ~ OD
o ol ~ o ~ _, oo 3 R, ~: , ~ o ~
O rl O ~ C ~ C S
a dP d~
~ C o o 8.~ ~ ~
a~ ~ . .
al ~ O ~ 2 S ~ ~ a~ ,~ S
~ o ~ C o ~
_l Z o ~ ' .
s ~ ~; O
s ~ ~ a C~ ~o o H . O I
H O _ ~ :
P o o ~a ~ .
~ ~7 O ~q 11) .
~ ~ ~ _1 14 ~1 Z .4 H ~ ~5 X l ~3 ~r ~ H . ~'¢ I
O H li4 t4 ~ V
U~
~" ~1 .
:~' .S ~ o ~ H ~ ~ ~ O O
a) 3 ~x ~
~.~ ~
: ~ ~1 ~ I O U S lh ~ C) ~1 ~ O
.. o ~ ~ a!
.,, ~ ~ ~ ~ ~~ a) ~ -H U~l O 0~ ~O e a~ ~ O :~
~ o a~rl _1 ~1 ~ ~.4 ~
t) _I~-rl I -I 0-~1 1 ~a 1~1 O q~ D O ~ O ........
E~ X ~ O al .a o u~ ~ o ~ la o ~ ~ x 1 LeA 14, 929 -25-.
~:
Any of the other organic compounds having a molecular weight of from about 500 to about 6000, optional chain-lengthening agents, hydrophillic chain lengthening agents and organic polyisocyanates disclosed as suitable herein may be substituted into the foregoing examples.
Other suitable components for making the polyurethanes are disclosed in US Patent 3,479,310 granted November 18, 1969 and in the book by Saunders and Frisch: "Polyurethanes Chemistry and Technology" published by Interscience Publishers, Copyright 1962.
Although the invention has been described in detail for the purpose of illustration, it is to be understood that such detail is solely for that purpose and that variations therein can be made by those skilled in the art without departing from the spirit and scope of the invention except as it may be limited by the claims.
LeA 14,929-Ca -26-'
LeA 14,929 10;~719Z
NON-IONIC POLYURETHANE DISPERSIONS
This invention relates generally to polyurethanes and more particularly to an improved polyurethane for making disper-sions, to a method for making them and to films and coatings prepared therefrom.
It has been disclosed before that polyurethanes and polyurethane ureas can be emulsified in water with emulsifiers and under the action of high shearing forces to form latices (e.g. as describéd in U.S. Patent Specification No. 3,294,724).
The preparation of these latices is difficult and requires close technical control of the process. Moreover, the resulting latices have the disadvantage that films produced therefrom have a poor resistance to water because of the use of an emulsi-fier. The latices also are often not of a sufficiently fine state of subdivision to be stable against irreversible sedi-mentation of the polyuret~ane.
Latices prepared with polyurethane ionomers which contain an internal dispersing agent in the form of ionic groups built into the molecule are very finely divided stable disper-sions and do not have these disadvantages. These known latices (see e.g. U.S. Patent Specification No. 3,479,310 or ~ritish Patent Specification No. 1,076,688) have the advantage of pos-sessing the excellent properties of linear polyurethane elas-tomers, such as high elasticity, high tensile strength, high resistance to hydrolytic influences and weathering and high resistance to exposure to light, combined with the ability to be worked up from solvent-free media. The danger of a fire or explosion because of the presence of a volatile solvent is avoided and reover, it is not necessary to destroy or recover organic solvents which may be harmful to the health and may `~
LeA 14,929 adversely affect the environment. Such latices also have a high solids content.
Although these dispersions have already become tech-nically important, they have two properties arising from their nature as polyelectrolytes which are somewhat disadvantageous and may jeopardize their universal acceptance. They are sensi-tive to electrolytes and to cold temperatures.
Other dispersions have been disclosed and described in German Offenlegungsschrift Nos. 2,141,805 and 2,141,807 in which the dispersibility is brought about not by groups of an ionic nature but by centers which make use of the hydrophilic character of polyethylene oxide ethers. These dispersions, insofar as they do not contain dispersifying groups of an ionic nature, are pre-pared by reacting a trifunctional isocyanate prepolymer (obtained from a trifunctional polypropylene oxide polyether and the stoi-chiometrically required quantity of a diisocyanate) with alcohol i mixtures which contain monofunctional polyethylene oxide ethers in such a manner that the reaction mixture contains one mol of the mixture of monofunctional alcohols to one mol of isocyanate prepolymer. The resulting mixture which contains NOO-groups is dispersed in water by the action of shearing forces and under-i goes an increase in molecular weight due to the conventional re-actions between NCO-groups and difunctional reactive hydrogen containing compounds (e.g. diamines). According to the examples given in German Offenlegungsschrift No. 2,141,805 and in Example 4 of German Offenlegungsschrift No. 2,141,807 films produced from these dispersions have ~-moduli of about 5 kg.wt./cm2 and tensile strengths of about 10 kg.wt./cm2 at elongations at break of 200%. Such dispersions are unsuitable for making coatings or coverings having good physical properties because such coatings must have a minimum tensile strength of 150 kg.wt./
cm2 and minimum elongation at break of about 400~.
It is therefore an object of this invention to provide a completely new method of obtaining polyurethanes which can be LeA 14,929 -2-` 103~19Z
dispersed in water without the aid of dispersing agents and poly-urethane dispersions obtained from these polyurethanes which are free from the above disadvantages. Another object of the inven-tion is to provide a process for producing noneionic, aqueous polyurethane dispersions which are free from emulsifiers. Another object of the invention is to provide improved polyurethane lat-ices. Still another object of the invention is to provide poly-urethane latices adapted for use in the preparation of coatings or coverings having improved physical properties.
The foregoing obiects and others are accomplished in accordance with this invention, generally speaking, by providing a polyurethane having a micromolecular structure including a side chain containing repeating ~O-CH2-CH2~ groups and attached to the micromolecular chain through specific groups described hereinafter.
The polyurethane provided by the invention is prepared by a process wherein an organic diisocyanate is reacted with an organic compound having a molecular weight of from about 500 to about 6000 which is difunctional for the purpose of the isocyanate polyaddition reaction and contains terminal hydrogen atoms which are reactive with isocyanato groups but does not contain side chain polyethylene oxide units and with an organic compound which is difunctional for the purpose of the isocyanate polyaddition reaction and contains terminal hydrogen atoms which are reactive with isocyanate groups as well as side chain polyethylene oxide units. The reaction mixture may contain, optionally, a conven-tional chain-lengthening agent having a molecular weight below 500 (hereinafter called "optional chain extender") and other suitable conventional auxiliary agents and additives used in polyurethane chemistry.
The reactions of the organic polyisocyanate with the organic compound having groups containing reactive hydrogen atoms LeA 14,929 determinable by the Zerewitinoff method having a molecular to about_~nnnJ
weight from . about 500r~a-~;~h-F~e chain extender may be conducted under substantially anhydrous conditions and the resulting polyurethane may then be converted later into an aque-ous dispersion or the polyurethane may be prepared by a pre-polymer process in which an excess of organic polyisocyanate is reacted with the organic compound having reactive hydrogen atoms and a molecular weight of at least about 500 in a first step under substantially anhydrous conditions and the prepolymer is then chain extended in the presence of water while forming a dispersion. Any difunctional organic compound which contains : reactive hydrogen atoms and side chain polyethylene oxide units of the following general formula (I) may be used:
R"' R"' Ho-cH-cH2-N-cH2-cH-oH (I) cO-NH-R-NH-co-o ( CH2-CH2-O ~ H2-CH2-X-R' in which R represents a divalent group obtained by removing the iso-cyanate groups from a diisocyanate with a molecular weight : of from about 112 to about 1000.
X represents oxygen or -NR"-R' and R" are identical or different and represent a monovalent hydrocarbon group containing from 1 to 12 carbon atoms, R"' represents hydrogen or a monovalent hydrocarbon group con-taining from 1 to 8 carbon atoms, and n represents an integer of from 4 to 89.
The invention also provides aqueous polyurethane dis-persions obtainable by this process.
The invention also provides a process for producing thermo-plastic, non-ionic polyurethane elastomers with a substantially linear molecular structure which are dispersible in water LeA 14,929 -4-~037~92 wherein an organic diisocyanate is reac~ed with a difunctional organic compound having terminal hydrogen atoms which are reac-tive with isocyanate groups, a molecular weight of from about 500 to about 6000 which is free from side chain polyethylene oxide units and with a difunctional compound having both term-inal hydrogen atoms which are reactive with isocyanate groups and side chain polyethylene oxide units. Conventional chain-lengthening agents with a molecular weight below 500 (optional chain-lengthening agents) as well as the usual auxiliary agents and additives customarily used in polyurethane chemistry may also be used. The difunctional organic compounds containing terminal hydrogen atoms which are reactive with isocyanate groups and contain side chain polyethylene oxide units are those of the general formula I given above.
The invention also comtemplates the polyurethanes ob-tainable by this process.
Any organic diisocyanate of the general formula R(NCO)2 in which R represents an organic group such as can be obtained by removing the isocyanate groups from an organic diisocyanate with a molecular weight of from about 112 to about 1000, prefer-ably about 140 to about 400 may be used. Diisocyanates which are particularly suitable for the process provided by the inven-tion are those of the general formula R(NCO)2 in which R repre-sents a divalent aliphatic hydrocarbon group containing 4 to 18 carbon atoms, a divalent cycloaliphatic hydrocarbon group con-taining 5 to 15 carbon atoms, a divalent aromatic hydrocarbon group containing 6 to 15 carbon atoms or an araliphatic hydro-carbon group containing 7 to 15 carbon atoms. The following are examples of typical representatives of these organic diisocya-nates which are particularly suitable for the process according to the invention: tetramethylene diisocyanate, hexamethylene di-isocyanate, dodecamethylene diisocyanate, cyclohexahe-l,3-diisocyanate, LeA 14,929 -5-cyclohexane- 1,4-diisocyanate, 1-isocyanato-3-isocyanatomethyl-3,5,5-trimethyl cyclohexane and 4,4'-diisocyanatodicyclohexyl-metha~e as well as aromatic diisocyanates such as 2,4-diisocyanato-toluene and 2,6-diisocyanatotoluene and mixtures of these isomers, 4,4'-diisocyanatodiphenylmethane, 1,5-diisocyanatonaphthalene and the like.
Any suitable difunctional organic compound having term-inal groups which contais hydrogen atoms determinable by the Zere-witinoff method and has a molecular weight in the range of about 500 to about 6000, preferably about 600 to 3000, may be used.
Any suitable dihydroxy polyesters known per se in poly-urethane chemistry which is obtained by esterification of a di-carboxylic acid such as succinic acid, adipic acid, suberic acid, azelaic acid, sebacic acid, phthalic acid, isophthalic acid, terephthalic acid, tetrahydrophthalic acid, and the like, and diols such ethylene glycol, propylene-1,2-glycol, propylene-1,3-glycol, diethylene glycol, butane-1,4-diol, hexane-1,6-diol, octane-l, 8-diol, neopentyl glycol, 2-methylpropane-1,3-diol or the various isomeric bis-hydroxymethyl cyclohexanes and the like may be used.
Any suitable polylactoneknown per se in polyurethane chemistry, e.g. polymers of E-caprolactone and one of the above-mentioned dihydric alcohols may be used.
Any suitable polycarbonate known per se in polyurethane chemistry which may be obtained, for example, by reacting the above-mentioned diols with diaryl carbonates or phosgene may be used.
Any suitable polyether known per se in polyurethane chemistry, e.g. polymers or copolymers of styrene oxide, propylene oxide, tetrahydrofuran, butylene oxide or epichlorohydrin, which polymers or copolymers are prepared from divalent starter mole-cules such as water, the above-mentioned diols or amines which contain 2 N-H bonds may be used. A certain amount of ethylene LeA 14,929 -6-10;~7192 oxide may also be used in the preparation of these compounds, provided the polyether used does not contain more than about 10 percent by weight of ethylene oxide. In general, however, polyethers which have been obtained without the addition of ethylene oxide are used.
Any suitable polythioether, polythio mixed ethers and polythioether esters known per se in polyurethane chemistry may be used.
Any suitable polyacetal known per se in polyurethane chemistry, for example those obtained from the above-mentioned diols and formaldehyde may be used.
Any suitable difunctional polyether ester containing terminal groups which are reactive with isocyanate groups may be used.
It is preferred to use dihydroxy polyesters, dihydroxy polylactones and dihydroxy polycarbonates as the organic compound having a molecular weight of at least about 500 in the process according to the invention.
Any suitable chain-lengthening agents having a molec-ular weight below 500 may be used as optional chain extenders in the process according to the invention for producing the poly-urethanes which can be dispersed without the aid of dispersing agents such as, for example, the low-molecular weight diols which have been described for the preparation of dihydroxy polyesters and the like, or also diamines such as diaminoethane, 1,6-dia-minohexane, piperazine, 2,5-dimethyl piperazine, 1-amino-3-aminoethyl-3,5,5-trimethyl-cyclohexane, 4,4'-diaminodicyclohexyl-methane, 1,4-diaminocyclohexane or 1,2-propylenediamine or also hydrazine, aminoacid hydrazides, hydrazides of semicarbazidocar-boxylic acids, bis-hydrazides, bis-semicarbazides, and the like.
LeA 14,929 -7-~æ ..
In order to synthesize the new self-dispersible poly-urethanes, it is an essential feature of the invention to use organic compounds which contain both hydrogen atoms capable of reacting with isocyanate groups and side chain ethylene oxide units, as represented by the above general formula I.
These compounds having ethylene oxide derived side chains which are essential to the invention will hereinafter be referred to as "hydrophilic chain-lengthening agents".
Preparation of the hydrophilic chain-lengthening agents may be carried out, for example, as follows:
Monovalent alcohols or monovalent phenols of the gen-eral formula R'-X-H (X = 0) are first prepared in known manner or the corresponding monovalent alcohols containing polyethylene oxide units as repre~ented by the formula HO--tCH2-CH2-O ~ CH2 CH2 X R (II) 1, are prepared by ethoxylation of secondary amines of the general formula R'-X-H (X `-NR"-). In the above formula II, R' and R"
! represent identical or different hydrocarbon groups, in partic-ular Cl to C10 alkyl groups, C4 to C8 cycloalkyl groups, C6 to C12 aryl groups or C7 to C10 aralkyl groups.
l Any suitable alcohol or phenol may be used such as, ! for example, methanol, ethanol, n-propanol, n-hexanol, n-decanol, isopropanol, tertiary butanol, phenol, p-cresol, benzyl alcohol or the like. Any suitable secondary amine may be used such as, for example, dimethylamine, diethylamine, dipropylamine, N-methyl-hexylamine, N-ethyl-decylamine, N-methyl-aniline, N-ethyl-benzylamine, N-methylcyclohexylamine, or the like.
The quantity of ethylene oxide grafted into the mole-cule may vary within wide limits. The polyethylene oxide chains generally consistoffrom about5 to about 90 andpreferably about20 LeA 14,929 -8-- . .
103,719Z
to about 70 ethylene oxide units.
In the second reaction stage, the resulting monovalent alcohols which contain polyethylene oxide units are reacted with a large excess of one of the diisocyanates of the general form-ula R(NCO)2 given above as examples, followed by removal of thediisocyanate excess to obtain the corresponding monoisocyanate which contains polyethylene oxide units as represented by the general formula oCN_R_NH_co--o--~cH2--cH2-O ~ CH2--CH2--X--R' (III) In this second reaction step, the diisocyanate is pre-ferably used in a two to ten-times molar excess, preferably a three to four-times molar excess, in order to prevent the forma-tion of the corresponding bis-urethanes which are free from NCO-groups. This second reaction step is preferably carried out by adding the monovalent alcohol which contains polyethylene oxide units to the diisocyanate in the reaction vessel. The reaction may be carried out at from about 70C to about 130C.
Subsequent removal of the diisocyanate excess is preferably carried out by thin-layer vacuum distillation at about 100C
to about 180C.
The hydrophilic chain-lengthening agent is then ob-tained in the third reaction step by reacting the above described monoisocyanates which contain polyethylene oxide units ~; with dialkanolamines of the general formula R"' R"' .
HO-CH-CH2-NH-CH2-CH-OH (IV) in which R"' has the meanings already indicated above. In this third reaction step, the reactants are preferably used in stoi-chiometric proportions. This step of the reaction is preferably LeA 14,929 -9-~037i9Z
carried out at temperatures between about 0C and about 50C, preferably at about 15 to about 30C. Suitable dialkanolamines of the general formula shown above are, for example, diethanola-mine, dipropanolamine (R"' = C~3), bis-(2-hydroxy-2-phenyl-ethyl)-amine and the like.
The use of components which are exclusively difunc-tional is an essential feature of the process according to the invention for producing the self-dispersible polyurethanes and for preparing non-ionic polyurethane dispersions. As is known from the chemistry of high polymer latices, however, in some cases the addition of very small quantities of trifunctional low-molecular weight compounds, e.g. trifunctional isocyanates or trifunctional chain-lengthening agents, may improve the proper-ties of the product. However, such trifunctional components should not be used in quantities of more than one equivalent percent, based on all the building components which take part in the polyaddition reaction.
The process provided by the invention for producing the self-dispersible polyurethanes may be carried out by the known methods of polyurethane chemistry, either by the one-stage process or by the two-stage process (prepolymer process).
The reactants for producing the self-dispersible poly-urethanes may be used in an equivalent ratio of isocyanate groups to groups which are reactive with isocyanate groups of between about 0.8:1 and about 2.5:1, preferably between about 0.95:1 and about 1.5:1. If an excess of NCO is used, the compounds obtained obviously contain NCO-groups which when the compounds are con-verted into an aqueous dispersion continue to react with water by a chain-lengthening reaction to yield the dispersed end prod-uct. The equivalent ratios given above therefore include all the components which take part in the synthesis of the polyure-LeA 14,929 -10-10~719Z
tilanes according to the invention, including the chain-lengthen-inq a~cnt with amino groups which may be used in the form of aqueous solutions (see the method described below for producing polyurethane dispersions by the prepolymer process) but not in-cluding that proportion of the water used for dispersing thepolyurethanes which reacts by a chain-lengthening reaction with any compounds present which contain NCO-groups.
The hydrophilic chain-lengthening agents may be used in quantities in the process according to the invention so that the finished polyurethane contains about 3~ to about 30% by weight preferably about 5~ to about 20% by weight, of side chain poly-ethylene oxide segments.
Both the one-stage method and the two-stage method of the process may be carried out either with or without solvents.
Any suitable organic solvent may be used, especially if production of the polyurethanes is intended to be accompanied or followed by conversion of the polyurethanes into an aqueous dispersion, including, for example, those solvents which are miscible with water and inert towards isocyanate groups and have a boiling point below 100C ! for example, acetone or methyl ethyl ketone.
If the one-stage process is employed, the difunctional organic compounds which have a molecular weight of from about 500 to about 6000 and contain groups capable of reacting with isocyanate groups, are preferably mixed with the hydrophilic chain-lengthening agent and with the optional chain-lengthening agent having a molecular weight below 500. The chain-lengthen-ing agents with a molecular weight below 500 which are optionally used in the one-stage process may be the diols disclosed above for the preparation of dihydroxy polyesters. The diisocyanate component is then added to the resulting mixture without solvents, LeA 14,929 -11-and reaction of the mixture is then brought about, preferably at temperatures of about 50 to about 150C, optionally after the addition of catalysts commonly used in polyurethane chemis-try. The quantity of diisocyanate component used is such that the NCO/OH-ratio is between about 0.8 and about 1.05. The vis-cosity of the mixture rises during the reaction, and one of the aforementioned solvents is therefore gradually added to the mix-ture. An organic solvent solution of the completely reacted polyurethane is thus obtained and the concentration of this so-lution is preferably adjusted to a solids content of about 10 toabout 50 percent by weight, preferably about 15 to about 40 per-cent by weight.
Conversion of the dissolved polyurethane elastomers into an aqueous dispersion may then be carried out conveniently by adding water to the stirred solution. In many cases, the j solution then passes through the phase of a water-in-oil emul-;l sion until it passes a viscosity maximum, at which point there is a sudden changeover into an oil-in-water emulsion. After removal of the solvent by distillation, a purely aqueous stable dispersion is left behind.
If the two-stage process is employed, an NCO prepoly-mer is preferably first prepared from excess diisocyanate, a higher molecular weight compound with groups capable of reacting with iso-cyanate groups of the type described above and hydrophilic chain-lengthening agent, using either a solvent-free melt of the reac-tants or using solvents and maintaining an NCO/OH-ratio of be-tween about 1.1:1 and about 3.5:1, preferably between about 1.2:1 and about 2.5:1. If no solvent is used, the NCO prepolymer is preferably taken up in a suitable solvent. The resulting solu-tion of prepolymer may then be reacted in known manner with theoptional chain-lengthening agent which has a lecular weight LeA 14,929 -12-~037~9Z
below 500 such as those given as examples above. To prepare the polyurethane dispersions according to the invention, it is advisable to use a special variation of the two-stage process in which the chain-lengthening agent, in this case preferably one of the above-mentioned diamines or hydrazine derivatives, dissolved in a small quantity of water or a mixture of water and solvents, is added to the above-described solution of the NCO
prepolymer in such quantities that the NCO/OH ratio is between about 2.5 and about 1.05. This reaction may be carried out at room temperature or preferably at about 25 to 60C. Subsequent addition of the remainder of the water followed by removal of the solvent yields the polyurethane dispersion. In this varia-tion of the process, the optional chain-lengthening agent may, if desired, be dissolved in the total quantity o water subse-quently present in the dispersion (50% to 200% by weight based on solid polyurethane).
In principle, the polyurethane elastomers provided bythe invention can also be converted into dispersions by other methods, for example, dispersion can be carried out without using solvents, e.g. by mixing the solvent-free elastomer melt with water in an apparatus which is capable of producing high shear-ing gradients, or it can be carried out with very small quanti-ties of solvents to act as plastici~ing agents, again using the same apparatus, or it can be carried out with the aid of non-mechanical dispersing agents such as sound waves of extremelyhigh frequency. Also, in the case of polyurethane ureas, chain-lengthening can be carried out after conversion of the propolymer into an aqueous emulsion.
Polyurethane dispersed in accordance with the inven-tion have an average particle size of about 0.5 m~ to about 5 ~,preferably about 100 to 500 m~, the optical dispersion or Tyndall LeA 14,929 -13-i0;~7~9Z
effect obviously beginning to appear at dispersions with particle sizes below 500 m~.
The rheological characteristics of the dispersions, which will not be discussed in detail here, depend on the par-ticle size and the concentration of the dispersion. As the par-ticles become very small, the viscosity increases and moreover with particles measuring less than about 100 m~, the flow limit progressively increases with decreasing particle size (Bingham body ). Regardless of this relationship, the viscosity in-creases with increasing concentration which may be as high as70% in this class of dispersions, the viscosity in some cases reaching a value of 50 c~.
The dispersions are insensitive to electrolytes and consequently the latex particles may be subjected, for example, to acid catalyzed cross-linking with formaldehyde or formalde-hyde derivatives; they may also be pigmented with electrolytically active pigments or dyes. Another property of the dispersions provided by the invention is their ability to be coagulated by heat which enables them to be worked up into foils or films which are permeable to water vapor simply by heating them.
The dispersions may be blended with other dispersions, e.g. with dispersions of polyvinyl acetate, polyethylene, poly-styrene, polybutadiene, polyvinyl chloride, co-polymer synthetic resins or the like.
Any suitable dispersion of filler, plasticize~, pigment, carbon black, silica sol, aluminium, clay, asbestos or the like may also be incorporated in the dispersions.
The dispersions of the polyurethane compounds are stable in water and can be stored and transported and worked up at any LeA 14,929 -14-1037~92 later date, e.g., into shaped products. They generally dry di-rectly to dimensionally stable synthetic coatings although the products of the process may also be shaped in the presence of known cross-linking agents. The polyurethanes obtained vary in their properties according to the elected chemical composition and the urethane group content. They may be obtained in the form of soft, sticky compounds or thermoplastic or rubbery elas-tic products within a wide range of hardness up to glass-hard duroplasts. The hydrophilic character of the products may also vary within wide limits. The elastic products can be worked thermoplastically at elevated temperatures, for example 100 to 180C.
The products of the process are suitable for coating, covering or impre~nating woven or non-woven textiles, leather, paper, wood, metal, ceramic, stone, concrete, bitumen, hard fiber, straw, glass, porcelain, synthetic resins of various kinds of glassfibers to produce antistatic and crease-resistant finishes or they may be used as binders for fleeces, adhesives, adhesify-ing agents, laminating agents, agents to render products hydro-phobic, plasticizers or binders, e.g. for corkmeal or sawdust,glassfibers, asbestos, paper-type materials, plastics or rubber waste or ceramic materials or as auxiliary agents in cloth-printing and in the paper industry, as adhesives for polymers, as sizing agents, e.g., for glass fibers, and for finishing leather.
For these purposes, the dispersions or pastes are pre-ferably applied to a porous support which subsequently remains bonded to the finished product, e.g. woven or non-woven textiles or fiber mats, felts or fleeces or also paper fleeces, foam plas-tics -oils or split leathe:r, substances which cause immediate LeA 14,929 -15-lO~9Z
solidification of the coating by virtue of their absorbent ac-tion. The materials are then dried at elevated temperature and if necessary pressed. Drying may also be carried out on smooth, porous or non-porous materials such as metal, glass, paper, card-board, ceramic materials, sheet steel, silicone rubber or alum-inium foil, in which case the finished sheet product is then lifted off and used as such or applied to a substrate by the reversal process by glueing, flame-laminating or calendering.
Application by the reversal process may be carried out at any time.
The properties of the products of the process can be modified by the addition of vinyl polymers or active or inactive fillers, for example polyethylene, polypropylene, polyvinyl ace-tate or ethylene/vinyl acetate copolymers which may be saponified lS or partly saponified and/or grafted with vinyl chloride; styrene/
butadiene copolymers, ethylene (graft) copolymers, carbon black, silica, asbestos, talcum, kaolin, titanium dioxide, glass in the form of powder or fibers, and cellulose. The end product ; may contain up to 70% of such fillers, based on the total quan-tity of dry substances, depending on the required properties and the purpose for which the end products are to be used.
Dyes, pigments, plasticizers or additives which influ-ence the flow properties may, of course, also be added.
After the products have been applied by the various techniques, they may be dried at room temperature or at elevated temperature. The drying temperature to be selected in each in-dividual case, which depends not only on the chemical composition of the material but above all on the moisture content, the dry-ing time and the thickness of the layer, can easily be deter-mined by a preliminary test. For any given heating time, thedrying temperature must in any case be below the solidification temperature.
LeA 14,929 -16-1~3719Z
The sheet structures may be coated subsequently with a finish to increase the resistance of the surface.
Aqueous dispersions or solutions are again preferably used for this purpose.
Very hard polyurethanes obtained from finely divided dispersions and sols are suitable for use as stoving lacquers and in some cases even as air-drying lacquers. They combine the advantages of great hardness and elasticity with high gloss, and when used with aliphatic diisocyanates they also have high light fastness and resistance to weathering.
The following examples serve to describe the composi-tion and preparation of some physical properties ol the products.
:' LeA 14,929 -17-Example 1: 103719Z
~, 370 parts of a linear polyester diol of adipic acid, hexanediol and 2,2-dimethylpropane-1,3-diol having an OH-number of about 66 were mixed with 53 parts of a compound (hereinafter termed dispersing agent A) of one mol of a polyethylene oxide ether with OH-number 49 which had been initiated on n-butanol, one mol of hexamethylene-1,6-diisocyanate and one mol of bis-(~-hydroxyethyl)-amine, and to this mixture were added 111 parts of 3-isocyanatomethyl-3,5,5-trimethyl-cyclohexylisocyanate and the mixture was heated to a temperature of 100C. Heating was continued for 3 hours with stirring and the exclusion of atmos-pheric moisture. The isocyanate content of the mixture dropped to 4.7% during this time. The mixture was then cooled to 60C
and diluted with 1020 parts of acetone.
A solution of 15 parts of diaminoethane in 125 parts of water was prepared and rapidly added to the reaction solution and homogeneously mixed with stirring. 700 parts of water were rapidly added with vigorous stirring to the resulting clear solu-tion which contained 35% solids, a milky white dispersion of the solid in water being formed. The dispersion contained acetone and it had a brownish, translucent appearance when viewed in thin layers. After removal of the acetone by distillation under a pressure of 100 mm.Hg,a pure, aqueous dispersion of the poly-urethane urea solid was left behind. It had a solid content of 40~.
The solid of this dispersion contained 7.7% by weight of polyethylene oxide ether units.
When the dispersion was poured out to form a film 100 ~ in thickness and the water was completely removed by evap-oration, a clear, smooth, elastic film 40 ~ in thickness was LeA 14,929 -18-obtained. It had the followl1ng~mec~anical properties:
Tensile strength: 180 kg.wt./cm2 Elongation at break: 910 %
The products of Examples 2 to 19 summarized in the following table were prepared by the process described in Example 1.
LeA 14,929 -19-10~719Z
~0 ~ ~ ' U~ ~D 1~ ~ ~ O ~1 x æ
~o O
a) s ~ ~ O O O o O o o o o o R o o o o o oo o o o o ~ S'l O ~ ~ D O~ Il~ r~ a~ I~ ~o a~ o N t`~ ~1 ~I ~ ~1 ~_1 ~1 ~1 ~I
O~
o a~ ~ ~
~1 C~ U~ ~D ~r er o o n S oo ~1 Il~ oo oO 1- CO ~ ~ ~D
3a) _1 ~1 O O-Xd~O c`P d~ d~ ~ ~ ~P dP d~ dP o~P
~ p~ o ~ P~ U~ O o U~ o o 0~ ~ u~ u~ ~ ~r er ~r ~ ~ ~
,~ N ~ 't' N N ~1 O O N O
t' o ~ Z ~ Su S~ ~ ,~ _~ _~ ,~ _~ ,~ ~ ,~ ,~ ,~
rl U
O
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t) z o .~
H
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,~ ~o~
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~ ~ O Ul H N ~`1 N N N N N N ~ N
t7~ la O n~ ` H
~1 ~I Z R H H
H O IY ~ ~1 ~3 a a a ~ ~ a a a a a . .
a~ H ~1~ m m m m m ~ ~ ~ m ~:
a ~ ~ O
,~ s~ a~ I I u s~
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~d ~ ~ .¢ou:~ o~O'~
LeA 14, 929 -20-10;~7192 ~ Z N
W
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E~ u~ a) 111 .,1 ~ Ul .C
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o ~ ~ ~1 O O X d~ ~ O O d o O
~ ~ ~ I` U~ U~ ~i P g ~ R. U ~ ~ ~1 ~ ~i ~ ~ 0 0 E~ O Z O
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_i H ~J m o o m ~ ~q~ O
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~ o ~ ~ ~ o I O ~ ~ , D o LeA 14, 92 9 -21-~o~ ~
~ -l ~ ~o D U~ r-~s~o~ ~ ~ ~ o ~o ~ ~ oo s~
~a ~
c.C :~ 3 ~ u:> oo u~ r- E3 13 o~a . . . .
O O-C dP ~ O I~ I~ I` I~
U ~O~ o o dP dP
~ ~ ~ ~r `, C ~D~-~-C~ ~
,~Q) U)U~ U~
~ ~ ~ ~ ~ _l i ~i -~ c C~ l ~ a~
~uzo~ o ~
: c o:~
~ H a a a c~ ~ H ~ O
S~ ~:,o ~
~ o 8 a H U rC
~ ~ H `1 ~ ~: O ~ I O
~ 0 ~ ` H N ~i ~J ~r~ Q~ U
X
à Q à Jc u~ ~ x . ~ o . c ~ o u .~ rl ~ C U~
HH ~ ~J m m m m ~ c ~
.4 ~ I o a ~ l I l ~n tn ~ o ,, ~ o ~ o ~300,~ ~, = U ~
o ~ P~ J' c o ~ c O ,¢ p4 c~ a r~ ~ ~ H
IeA 14, 929 -22-~92 Example 20:
234 parts of a polyester diol of adipic acid and di-ethylene glycol with OH-number approximately 40 are mixed with 49.5 parts of "dispersing agent A" from Example 1 in the solvent-free melt at 60c. 15.7 parts of ~utane-1,4-diol were then addedand also homogeneously mixed. 25.2 parts of an 80:20 mixture of tolylene-2,4-diisocyanate and tolylene-2,6-diisocyanate were then added all at once to this mixture with stirring. The temperature was then raised to 90C. The viscosity of the mixture then rapid-ly rose and reached a value of about 20,000 cP in 15 minutes.
50 parts of acetone were then added, whereupon the temperature dropped to about 70C with vigorous boiling. The viscosity fell at this stage but then started to increase again slowly, where-upon a further 50 parts of acetone were added.
This process was repeated until 6000 parts of acetone had been added. A clear solution of a polyether polyurethane in acetone with a solids content of 35% was obtained. This solu-tion was cooled to 30C and 525 parts of water were then added all at once with vigorous stirring. A bluish-white, medium viscosity dispersion of the solid in the acetone/water mixture was formed.
After removal of the acetone under a vacuum of 100 mm.Hg, a viscous purely aqueous dispersion of the polyester polyurethane solid remained behind. It had a concentration of 40%. The solid con-tained 11.4% of the polyethylene oxide polyether which had been initiated on butanol.
.:
When the dispersion was poured out to form a film 100 in thickness from which the water was then completely removed by evaporation, a clear, elastic, very soft and slightly sticky film was left behind which had a thickness of 40 ~ and the fol-lowing mechanical properties:
LeA 14,929 -23-1037~
Tensile strength: 170 kg.wt./cm2 Elongation at break: 1090 %
The products in the following examples 21 and 22 were prepared by the process described in Example 20.
LeA 14,929 -24-: 1037~9Z
aJ .
~ . .
~Z , ~ o o o CO o a~ ,~
c~
o U~ U~
O CO
E~ tn a ~ ~ _l , a~
dP ~ ~ O
O ~ X ~ ~ ~ OD
o ol ~ o ~ _, oo 3 R, ~: , ~ o ~
O rl O ~ C ~ C S
a dP d~
~ C o o 8.~ ~ ~
a~ ~ . .
al ~ O ~ 2 S ~ ~ a~ ,~ S
~ o ~ C o ~
_l Z o ~ ' .
s ~ ~; O
s ~ ~ a C~ ~o o H . O I
H O _ ~ :
P o o ~a ~ .
~ ~7 O ~q 11) .
~ ~ ~ _1 14 ~1 Z .4 H ~ ~5 X l ~3 ~r ~ H . ~'¢ I
O H li4 t4 ~ V
U~
~" ~1 .
:~' .S ~ o ~ H ~ ~ ~ O O
a) 3 ~x ~
~.~ ~
: ~ ~1 ~ I O U S lh ~ C) ~1 ~ O
.. o ~ ~ a!
.,, ~ ~ ~ ~ ~~ a) ~ -H U~l O 0~ ~O e a~ ~ O :~
~ o a~rl _1 ~1 ~ ~.4 ~
t) _I~-rl I -I 0-~1 1 ~a 1~1 O q~ D O ~ O ........
E~ X ~ O al .a o u~ ~ o ~ la o ~ ~ x 1 LeA 14, 929 -25-.
~:
Any of the other organic compounds having a molecular weight of from about 500 to about 6000, optional chain-lengthening agents, hydrophillic chain lengthening agents and organic polyisocyanates disclosed as suitable herein may be substituted into the foregoing examples.
Other suitable components for making the polyurethanes are disclosed in US Patent 3,479,310 granted November 18, 1969 and in the book by Saunders and Frisch: "Polyurethanes Chemistry and Technology" published by Interscience Publishers, Copyright 1962.
Although the invention has been described in detail for the purpose of illustration, it is to be understood that such detail is solely for that purpose and that variations therein can be made by those skilled in the art without departing from the spirit and scope of the invention except as it may be limited by the claims.
LeA 14,929-Ca -26-'
Claims (9)
1. A process for making non-ionic aqueous polyurethane dispersions free from emulsifier which comprises reacting an organic diisocyanate and an organic compound which is difunctional for the purpose of an isocyanate polyaddition reaction, contains terminal hydrogen atoms which are reactive with isocyanate groups, has a molecular weight range of from about 500 to about 6000 and is free from side chain polyethylene oxide units and with an organic compound which is difunctional for the purpose of the isocyanate polyaddition reaction, contains terminal hydrogen atoms which are reactive with isocyanate groups and contains side chain polyethylene oxide units, said organic compound containing side chain polyethylene oxide units having the formula in which R represents a divalent group obtained by removing the iso-cyanate groups from a diisocyanate with a molecular weight of from about 112 to about 1000, X represents oxygen or -NR"-R' and R" are identical or different and represent monovalent hydrocarbon groups containing 1 to 12 carbon atoms, R"' represents hydrogen or a monovalent hydrocarbon group containing 1 to 8 carbon atoms and n represents an integer of from 4 to 89.
2. A polyurethane dispersion prepared by the process of Claim 1.
3. A process for producing thermoplastic non-ionic polyurethane elastomers which are dispersible in water and have a substantially linear molecular structure which comprises reacting an organic diisocyanate with an organic compound which is difunctional for the purpose of an iso-cyanate polyaddition reaction, contains terminal hydrogen atoms which are reactive with isocyanate groups, has a molecular weight of from about 500 to about 6000 and is free from side chain polyethylene oxide units and with an organic compound which is difunctional for the purpose of an isocyanate polyaddition reaction and contains terminal hydrogen atoms which are reactive with isocyanato groups and side chain polyethylene oxide units, said compound containing side chain polyethylene oxide units having the general formula in which R represents a divalent group obtained by removing the iso-cyanate groups from a diisocyanate with a molecular weight of from about 112 to about 1000, X represents oxygen or -NR"-, R' and R" are identical or different and represent monovalent hydrocarbon groups containing 1 to 12 carbon atoms, R"' represents hydrogen or a monovalent hydrocarbon group containing 1 to 8 carbon atoms, and n represents an integer of from 4 to 89.
4. The product of the process of Claim 3.
5. A process for making a polyurethane which is adapted to be dispersed in water without an emulsifying agent which comprises reacting an organic diisocyanate with an organic compound having reactive hydrogens as determinable by the Zerewitinoff method and having a molecular weight of from about 500 to about 6000 which is substantially free from units derived from ethylene oxide and a hydrophilic chain lengthening agent having the formula in which R represents a divalent group obtained by removing the isocyanate groups from a diisocyanate with a molecular weight of from about 112 to about 1000, X represents oxygen or -NR"-, R' and R" are identical or different and represent a mono-valent hydrocarbon group containing from 1 to 12 carbon atoms, R"' represents hydrogen or a monovalent hydrocarbon group containing from 1 to 8 carbon atoms, and n represents an integer of from 4 to 89.
6, The process of Claim 1 wherein a difunctional organic compound having hydrogen atoms reactive with isocyanato groups, a molecular weight of below 500 and free from groups derived from ethylene oxide is included in the reaction mixture.
7. The process of Claim 3 wherein a difunctional organic compound having hydrogen atoms reactive with isocyanato groups, a molecular weight of below 500 and free from groups derived from ethylene oxide is included in the reaction mixture.
8. The process of Claim 5 wherein a difunctional organic compound having hydrogen atoms reactive with isocyanato groups, a molecular weight of below 500 and free from groups derived from ethylene oxide is included in the reaction mixture.
9. A process for making dispersions which comprises dispersing the product of Claim 5 in water.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2314512A DE2314512C3 (en) | 1973-03-23 | 1973-03-23 | Thermoplastic, nonionic, water dispersible substantially linear polyurethane elastomers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1037192A true CA1037192A (en) | 1978-08-22 |
Family
ID=5875667
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA194,918A Expired CA1037192A (en) | 1973-03-23 | 1974-03-13 | Non-ionic polyurethane dispersions |
Country Status (16)
| Country | Link |
|---|---|
| US (1) | US3905929A (en) |
| JP (1) | JPS5716127B2 (en) |
| AT (1) | AT334633B (en) |
| AU (1) | AU6686074A (en) |
| BE (1) | BE812618A (en) |
| BR (1) | BR7402278D0 (en) |
| CA (1) | CA1037192A (en) |
| CH (1) | CH606178A5 (en) |
| DD (1) | DD115144A5 (en) |
| DE (1) | DE2314512C3 (en) |
| ES (1) | ES424519A1 (en) |
| FR (1) | FR2222404B1 (en) |
| GB (1) | GB1412576A (en) |
| IT (1) | IT1005868B (en) |
| LU (1) | LU69682A1 (en) |
| NL (1) | NL7403767A (en) |
Families Citing this family (183)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5345234B2 (en) * | 1974-01-28 | 1978-12-05 | ||
| FR2280644A1 (en) * | 1974-08-02 | 1976-02-27 | Protex Manuf Prod Chimiq | HEAT SENSITIVE LATEX COMPOSITIONS |
| DE2651505A1 (en) * | 1976-11-11 | 1978-05-24 | Bayer Ag | CATIONIC ELECTROLYTE-STABLE DISPERSIONS |
| BR7606383A (en) * | 1975-09-26 | 1977-06-14 | Bayer Ag | PROCESS FOR THE PREPARATION OF POLYURETHANES |
| DE2551094A1 (en) * | 1975-11-14 | 1977-05-26 | Bayer Ag | PROCESS FOR THE MANUFACTURING OF WATER DISPERSIBLE POLYURETHANES |
| DE2555534C3 (en) * | 1975-12-10 | 1981-01-08 | Bayer Ag, 5090 Leverkusen | Polyurethanes dispersible in water |
| DE2637690A1 (en) * | 1976-08-21 | 1978-02-23 | Bayer Ag | PROCESS FOR THE PRODUCTION OF Aqueous DISPERSIONS OR SOLUTIONS OF POLYURETHANES AND THEIR USE |
| DE2642073C2 (en) * | 1976-09-18 | 1984-08-16 | Bayer Ag, 5090 Leverkusen | Process for the production of a crosslinked sheet-like structure |
| DE2651506C2 (en) * | 1976-11-11 | 1986-04-30 | Bayer Ag, 5090 Leverkusen | Process for the preparation of water-dispersible polyurethanes |
| US4115328A (en) * | 1977-01-07 | 1978-09-19 | Ciba-Geigy Corporation | Process for making stable solvent-free, aqueous epoxy resin dispersions |
| DE2708442C2 (en) | 1977-02-26 | 1984-10-25 | Bayer Ag, 5090 Leverkusen | Process for the production of modified aqueous plastic dispersions |
| DE2807479A1 (en) * | 1978-02-22 | 1979-08-23 | Bayer Ag | COATING AGENTS |
| DE2814173C2 (en) | 1978-04-01 | 1986-06-26 | Bayer Ag, 5090 Leverkusen | Coating compounds |
| DE2814079A1 (en) * | 1978-04-01 | 1979-10-11 | Bayer Ag | COATING DIMENSIONS |
| DE2816815A1 (en) * | 1978-04-18 | 1979-10-31 | Bayer Ag | WATER DISPERSIBLE OR SOLUBLE POLYURETHANES AND A METHOD FOR THEIR MANUFACTURING |
| DE2900574A1 (en) * | 1979-01-09 | 1980-07-17 | Bayer Ag | USE OF WATER-SOLUBLE ELECTROLYTES AS ADDITIVES IN AQUEOUS PLASTIC DISPERSIONS AND AN AQUEOUS PLASTIC DISPERSION CONTAINING A WATER-SOLUBLE ELECTROLYTE |
| US4307219A (en) * | 1980-04-30 | 1981-12-22 | Minnesota Mining And Manufacturing Company | Aqueous solvent dispersible linear polyurethane resins |
| DE3025609A1 (en) * | 1980-07-05 | 1982-02-11 | Basf Ag, 6700 Ludwigshafen | METHOD FOR PRODUCING AQUEOUS EPOXY RESIN DISPERSIONS |
| DE3027198A1 (en) * | 1980-07-18 | 1982-02-11 | Bayer Ag, 5090 Leverkusen | SOLID, PRE-DISPERSABLE WATER-DISPERSIBLE, ISOCYANATE GROUPS, A METHOD FOR THE PRODUCTION OF AQUEOUS PLASTIC DISPERSIONS USING THESE PRE-PLASTICS, AND THEIR IMPROVERS |
| US4408008A (en) * | 1981-07-24 | 1983-10-04 | Mobay Chemical Corporation | Stable, colloidal, aqueous dispersions of cross-linked urea-urethane polymers and their method of production |
| NL8201654A (en) * | 1982-04-21 | 1983-11-16 | Tno | POLYETHERURETHANE GRANES WITH ABSORBING ACTION, METHOD FOR PREPARING THESE POLYETHERURETHANE GRANULES, AND METHOD FOR EXTRACTING OR SEPARATING METALS FROM LIQUIDS USING THESE GRANULES. |
| DE3320217A1 (en) * | 1983-06-03 | 1984-12-06 | Bayer Ag, 5090 Leverkusen | INORGANIC-ORGANIC COMPOSITES AND METHOD FOR THEIR PRODUCTION |
| US4582873A (en) * | 1984-05-21 | 1986-04-15 | Ppg Industries, Inc. | Process for producing aqueous dispersions, internally silylated and dispersed polyurethane resins, and surfaces containing same |
| US4567228A (en) * | 1984-05-21 | 1986-01-28 | Ppg Industries, Inc. | Aqueous dispersion, internally silylated and dispersed polyurethane resins, and surfaces containing same |
| US4542065A (en) * | 1984-05-21 | 1985-09-17 | Ppg Industries, Inc. | Chemically treated glass fibers and strands and dispersed products thereof |
| DE3441934A1 (en) * | 1984-11-16 | 1986-05-28 | Bayer Ag, 5090 Leverkusen | METHOD FOR PRODUCING AREAS |
| DE3512918A1 (en) * | 1985-04-11 | 1986-10-16 | Bayer Ag, 5090 Leverkusen | CARBODIIMIDE GROUPS CONTAINING ISOCYANATE DERIVATIVES, A METHOD FOR THE PRODUCTION THEREOF AND THE USE THEREOF AS AN ADDITIVE FOR AQUEOUS SOLUTIONS OR DISPERSIONS OF PLASTICS |
| AU594694B2 (en) * | 1985-08-06 | 1990-03-15 | Onoda Cement Co., Ltd. | Method of forming protective layer on concrete or mortar |
| DE3600595A1 (en) * | 1986-01-11 | 1987-07-16 | Bayer Ag | METHOD FOR PRODUCING AREAS |
| DE3625605A1 (en) * | 1986-07-29 | 1988-02-11 | Hoechst Ag | AQUEOUS PIGMENT PREPARATIONS AND THEIR USE |
| US4937027A (en) * | 1986-11-13 | 1990-06-26 | Onoda Cement Co., Ltd. | Method of manufacturing corrosion-resistant concrete or mortar |
| DE3641494A1 (en) * | 1986-12-04 | 1988-06-09 | Bayer Ag | POYLURETHANE SOLUBLE OR DISPERSABLE IN WATER, A METHOD FOR THE PRODUCTION THEREOF AND THEIR USE FOR COATING ANY SUBSTRATE |
| US4794147A (en) * | 1987-07-24 | 1988-12-27 | Basf Corporation, Inmont Division | Novel non-ionic polyurethane resins having polyether backbones in water-dilutable basecoats |
| US4946910A (en) * | 1987-07-24 | 1990-08-07 | Basf Corporation, Inmont Division | Novel non-ionic polyurethane resins having polyether backbones in water-dilutable basecoats |
| US5314942A (en) * | 1987-09-14 | 1994-05-24 | Ici Americas, Inc. | Aqueous dispersions |
| GB8721533D0 (en) * | 1987-09-14 | 1987-10-21 | Polyvinyl Chemical Ind | Aqueous dispersions |
| GB2209758B (en) * | 1987-09-14 | 1990-12-12 | Ici America Inc | Aqueous dispersions |
| DE3735587A1 (en) * | 1987-10-21 | 1989-05-11 | Bayer Ag | METHOD FOR PRODUCING AQUEOUS POLYURETHANE-POLYHANE DISPERSIONS |
| ATE107875T1 (en) * | 1987-11-18 | 1994-07-15 | Zeneca Ltd | AQUEOUS POLYURETHANE DISPERSIONS. |
| US4822685A (en) * | 1987-12-10 | 1989-04-18 | Ppg Industries, Inc. | Method for preparing multi-layered coated articles and the coated articles prepared by the method |
| GB8913644D0 (en) * | 1989-06-14 | 1989-08-02 | Ici America Inc | Aqueous dispersions |
| US5017673A (en) * | 1989-10-12 | 1991-05-21 | Basf Corporation | Nonionically stabilized polyester urethane resin for water-borne coating compositions |
| US5389720A (en) * | 1990-05-25 | 1995-02-14 | Miles Inc. | Aqueous polyisocyanate dispersions |
| US5532058A (en) * | 1990-12-10 | 1996-07-02 | H. B. Fuller Licensing & Financing, Inc. | Dry-bonded film laminate employing polyurethane dispersion adhesives with improved crosslinkers |
| US5185200A (en) * | 1991-03-28 | 1993-02-09 | Miles Inc. | Aqueous polyisocyanate dispersions with reduced isocyanate contents and their use for the production of fiberglass mats |
| US5236994A (en) * | 1991-03-28 | 1993-08-17 | Miles Inc. | Process for sealing and/or priming concrete with aqueous polyisocyanate dispersions and the concrete obtained by this process |
| US5700867A (en) * | 1993-10-01 | 1997-12-23 | Toyo Ink Manufacturing Co., Ltd. | Aqueous dispersion of an aqueous hydrazine-terminated polyurethane |
| US5763529A (en) * | 1994-03-31 | 1998-06-09 | Cytec Technology Corp. | Interpenetrating polymer network compositions |
| US6086995A (en) * | 1994-05-13 | 2000-07-11 | Decora North America | Self-wound self-adhesive surface covering material |
| EP0741005B1 (en) * | 1995-05-05 | 2000-08-23 | Minnesota Mining And Manufacturing Company | Composite film and use thereof |
| EP0774475A3 (en) | 1995-11-17 | 1997-10-01 | Basf Ag | Aqueous dispersions containing a polyurethane having isocyanate groups blocked with oxime and/or carbonyl groups in a keto or aldehyde function |
| US5714561A (en) * | 1996-09-23 | 1998-02-03 | Uniroyal Chemical Company, Inc. | Water-dispersable polyurethanes |
| DE69801494T2 (en) | 1997-03-17 | 2002-04-18 | Dow Chemical Co | POLYURETHANE LATEX, THEIR PRODUCTION METHOD AND POLYMERS MADE THEREOF |
| DE19736542A1 (en) * | 1997-08-22 | 1999-02-25 | Bayer Ag | Wool with anti-felting finish |
| DE19812880A1 (en) | 1998-03-24 | 1999-09-30 | Bayer Ag | Shaped part and flexible film with protected conductor track and process for its production |
| US6096823A (en) * | 1998-10-14 | 2000-08-01 | Bayer Corporation | Moisture-curable compounds containing isocyanate and alkoxysilane groups |
| KR100746464B1 (en) | 1999-12-23 | 2007-08-03 | 아크조 노벨 엔.브이. | Aqueous coating composition comprising an addition polymer and a polyurethane |
| US7557235B2 (en) | 2000-02-16 | 2009-07-07 | Lubrizol Advanced Materials, Inc. | Hydroxyl-terminated thiocarbonate containing compounds, polymers, and copolymers, and polyurethanes and urethane acrylics made therefrom |
| DE10056163A1 (en) * | 2000-11-13 | 2002-05-23 | Basf Ag | Anticreasing finish, textile treatment, solid or liquid laundry detergent and laundry conditioner formulations for cellulose textiles, contain hydrophilic modified polyisocyanate and/or polyurethane |
| DE10056183A1 (en) * | 2000-11-13 | 2002-05-29 | Basf Ag | Highly branched polymers for anti-crease finishing of cellulose-containing textiles |
| DE10133789A1 (en) * | 2001-07-16 | 2003-02-06 | Basf Ag | Aqueous dispersions for hydrolysis-resistant coatings |
| DE10138765A1 (en) | 2001-08-07 | 2003-02-20 | Bayer Ag | Aqueous dispersions of hydrophilic polyurethane resins |
| GB0128221D0 (en) * | 2001-11-24 | 2002-01-16 | Avecia Ltd | Aqueous urethane dispersants |
| US7358295B2 (en) * | 2002-04-05 | 2008-04-15 | Lubrizol Advanced Materials, Inc. | Hybrid polymer composition, and article therefrom |
| US6897281B2 (en) * | 2002-04-05 | 2005-05-24 | Noveon Ip Holdings Corp. | Breathable polyurethanes, blends, and articles |
| FR2839968B1 (en) * | 2002-05-22 | 2005-02-11 | Saint Gobain Vetrotex | POLYURETHANE-BASED ANHYDROUS-SIZING COMPOSITION FOR GLASS YARNS, GLASS YARNS OBTAINED AND COMPOSITES COMPRISING SAID YARNS |
| EP1507812A1 (en) * | 2002-05-24 | 2005-02-23 | Crompton Corporation | Polyurethane dispersions |
| US20050209428A1 (en) * | 2002-06-19 | 2005-09-22 | Krishnan Tamareselvy | Breathable polyurethanes, blends, and articles |
| US20040092622A1 (en) * | 2002-07-01 | 2004-05-13 | Pearlstine Kathryn Amy | Inkjet ink with reduced bronzing |
| ITVA20020064A1 (en) * | 2002-12-02 | 2004-06-03 | Lamberti Spa | STABLE WATER DISPERSIONS OF BLOCKED NON-IONIC POLYISOCYANATES. |
| KR101289578B1 (en) | 2002-12-20 | 2013-07-24 | 다우 글로벌 테크놀로지스 엘엘씨 | Process to make synthetic leather and synthetic leather made therefrom |
| CN2604457Y (en) * | 2003-04-28 | 2004-02-25 | 中山罗杰塑胶科技有限公司 | Textile |
| CN1248777C (en) * | 2003-05-08 | 2006-04-05 | 中国石油化工股份有限公司 | Externally circulating heated reaction or separation container |
| DE10324306A1 (en) * | 2003-05-30 | 2004-12-16 | Bayer Materialscience Ag | Aqueous PU dispersions for the production of coatings with a soft-feel effect |
| DE10328063A1 (en) * | 2003-06-23 | 2005-01-13 | Bayer Materialscience Ag | Aqueous preparations of hydrophilic polyurethane resins |
| WO2005014697A1 (en) * | 2003-08-06 | 2005-02-17 | The Procter & Gamble Company | Coated water-swellable material |
| MXPA06001295A (en) * | 2003-08-06 | 2006-04-11 | Procter & Gamble | Absorbent article comprising coated water-swellable material. |
| EP1651282A1 (en) | 2003-08-06 | 2006-05-03 | The Procter & Gamble Company | Absorbant structures comprising coated water-swellable material |
| EP1518567B1 (en) | 2003-09-25 | 2017-06-28 | The Procter & Gamble Company | Absorbent articles comprising fluid acquisition zones with coated superabsorbent particles |
| US7238745B2 (en) * | 2003-12-15 | 2007-07-03 | Bayer Materialscience Llc | Aqueous polyurethane/urea dispersions containing alkoxysilane groups |
| WO2005058995A1 (en) * | 2003-12-17 | 2005-06-30 | Dsm Ip Assets B.V. | Stain resistant urethane-vinyl aqueous coating compositions |
| DE10360043A1 (en) * | 2003-12-18 | 2005-07-21 | Basf Ag | Pigments coated with polyaddition products, process for their preparation and their use |
| US20050215663A1 (en) * | 2004-01-21 | 2005-09-29 | Berge Charles T | Inkjet inks containing crosslinked polyurethanes |
| US20050182187A1 (en) * | 2004-02-12 | 2005-08-18 | Koonce William A. | Polyurethane dispersions and coatings made therefrom |
| US20070197720A1 (en) * | 2004-03-15 | 2007-08-23 | Basf Aktiengesellschaft | Novel solvent for producing polyurethane dispersions |
| DE102004013259A1 (en) * | 2004-03-18 | 2005-09-29 | Bayer Materialscience Ag | Aqueous PUR dispersions with improved adhesion |
| DE102004023768A1 (en) * | 2004-05-11 | 2005-12-01 | Bayer Materialscience Ag | Aqueous polyurethane dispersions and their use as an adhesive |
| US8137754B2 (en) * | 2004-08-06 | 2012-03-20 | Lubrizol Advanced Materials, Inc. | Hydroxyl-terminated thiocarbonate containing compounds, polymers, and copolymers, and polyurethanes and urethane acrylics made therefrom |
| EP1786848A1 (en) | 2004-08-06 | 2007-05-23 | Noveon, Inc. | Polyurethanes and urethane acrylics made from hydroxyl-terminated thiocarbonate containing compounds |
| CA2585131C (en) * | 2004-10-26 | 2014-01-21 | Noveon, Inc. | Water-borne dispersions of oil modified urethane polymers |
| US20060111506A1 (en) * | 2004-11-22 | 2006-05-25 | Bedri Erdem | Filled polyurethane dispersions |
| US20060116454A1 (en) * | 2004-12-01 | 2006-06-01 | Bedri Erdem | Stable thermally coaguable polyurethane dispersions |
| US20080154224A1 (en) * | 2005-02-04 | 2008-06-26 | Basf Aktiengesellschaft | Process for Producing a Water-Absorbing Material Having a Coating of Elastic Filmforming Polymers |
| DE602006015422D1 (en) * | 2005-02-04 | 2010-08-26 | Basf Se | METHOD FOR PRODUCING A WATER ABSORBENT MATERIAL WITH A COATING OF ELASTIC FILM-FORMING POLYMERS |
| WO2006082239A2 (en) * | 2005-02-04 | 2006-08-10 | Basf Aktiengesellschaft | Water-absorbing material having a coating of elastic film-forming polymers |
| WO2006083583A2 (en) * | 2005-02-04 | 2006-08-10 | The Procter & Gamble Company | Absorbent structure with improved water-swellable material |
| JP2008529590A (en) * | 2005-02-04 | 2008-08-07 | ザ プロクター アンド ギャンブル カンパニー | Absorbent structure with improved water-absorbing material |
| TW200635959A (en) * | 2005-02-04 | 2006-10-16 | Basf Ag | Water swellable material |
| MX2007009300A (en) * | 2005-02-04 | 2007-09-11 | Procter & Gamble | Absorbent structure with improved water-absorbing material. |
| US8017686B2 (en) * | 2005-08-23 | 2011-09-13 | Akzo Nobel Coating International B.V. | Polyurethane dispersant resin |
| US7435787B2 (en) | 2005-09-14 | 2008-10-14 | Momentive Performance Materials Inc. | Process for the continuous production of silylated resin |
| EP1963392B2 (en) * | 2005-12-15 | 2012-08-01 | Akzo Nobel Coatings International BV | Multilayer coating system |
| CN101395202B (en) | 2006-03-03 | 2012-01-18 | 帝斯曼知识产权资产管理有限公司 | Hair care compositions |
| EP2065417B1 (en) * | 2006-09-20 | 2018-02-21 | Mitsui Chemicals, Inc. | Aqueous polyurethane resin |
| US20080081160A1 (en) * | 2006-09-28 | 2008-04-03 | Lubrizol Advanced Materials, Inc. | Ink Receptive Coatings For Woven and Nonwoven Substrates |
| WO2008077766A1 (en) * | 2006-12-22 | 2008-07-03 | Basf Se | Microcapsules comprising compounds with carbodiimide groups |
| DE102008000270A1 (en) | 2007-02-14 | 2008-08-28 | Basf Se | Producing aqueous dispersions of polyadducts comprises reacting starting compounds in a high-boiling water-miscible solvent, dispersing the resulting solution in water and removing the solvent |
| DE102008000478A1 (en) | 2007-03-05 | 2008-09-11 | Basf Se | Aqueous polyurethane dispersion for use as bonding agents in adhesives, particularly in concealment adhesives, and for coating and impregnating for leather, has polyethercarbonate polyol as structure component |
| DE102007020523A1 (en) | 2007-05-02 | 2008-11-06 | Helling, Günter, Dr. | Metal salt nanogel-containing polymers |
| DE102008038899A1 (en) | 2008-08-13 | 2010-02-18 | Bayer Materialscience Ag | Aqueous polyurethane-polyurethane urea dispersion based on di- or higher-functional polyols, di- or poly-isocyanate components, and mixture of primary and/or secondary mono- or di-amino compounds, useful e.g. to produce rubber materials |
| CL2008003124A1 (en) | 2007-11-07 | 2009-11-27 | Bayer Materialscience Ag | Aqueous polyurethane-aqueous urea dispersions of; difunctional polyol (s) or higher functionality, monofunctional compound (s) with at least 50% w / w ethylene oxide, di- or polyiocyanate component (s); and mixture of primary and / or secondary monoamine compounds; process; use; composition; and adhesive compound. |
| DE102007054002A1 (en) * | 2007-11-13 | 2009-05-14 | Bayer Materialscience Ag | Nonionic hydrophilicized binder dispersions |
| US20090131581A1 (en) * | 2007-11-19 | 2009-05-21 | Wylie Amy S | Aqueous, stain-resistant coating compositions |
| JP5574709B2 (en) * | 2007-12-06 | 2014-08-20 | 三井化学株式会社 | Hydrophilic resin and film |
| CN101959914B (en) * | 2007-12-26 | 2014-02-12 | 陶氏环球技术有限责任公司 | Polyurethane dispersions and coatings produced therefrom |
| DE102008004178A1 (en) | 2008-01-11 | 2009-07-16 | Basf Se | Textile fabrics, process for their preparation and their use |
| WO2009144180A1 (en) * | 2008-05-27 | 2009-12-03 | Basf Se | New polyurethane dispersions |
| WO2009153333A1 (en) * | 2008-06-19 | 2009-12-23 | Dsm Ip Assets B.V. | Shampoo preparations |
| KR101693877B1 (en) * | 2008-06-19 | 2017-01-06 | 디에스엠 아이피 어셋츠 비.브이. | Shampoo preparations |
| ES2377708T3 (en) * | 2008-08-26 | 2012-03-30 | Basf Se | Adhesive composition for removable self-adhesive articles, based on adhesive polymers and organic nanoparticles |
| EP2419466B1 (en) | 2009-04-14 | 2017-09-13 | Basf Se | Adhesive made of polymers having crystalline domains, amorphous polyurethane and silane compounds |
| WO2010118949A2 (en) | 2009-04-14 | 2010-10-21 | Basf Se | Use of polyurethane adhesive made of polyester diols, polyether diols and silane compounds for producing film-coated furniture |
| ES2655878T3 (en) | 2009-08-20 | 2018-02-22 | Basf Se | Use of polyelectrolyte complexes as a plasticizer barrier |
| DE102010043486A1 (en) | 2009-11-16 | 2011-05-19 | Basf Se | Binding flat, flexible substrates to non-flexible substrates, comprises applying an adhesive to flexible substrate and adhering flexible substrate coated with adhesive to non-flexible substrate, where adhesive contains carbodiimide groups |
| US9617453B2 (en) | 2009-12-14 | 2017-04-11 | Air Products And Chemicals, Inc. | Solvent free aqueous polyurethane dispersions and methods of making and using the same |
| EP2388283A1 (en) | 2010-05-18 | 2011-11-23 | Bayer MaterialScience AG | Process for adjusting the viscosity of anionic polyurethane dispersions |
| US20130065468A1 (en) | 2010-06-02 | 2013-03-14 | Lubrizol Advanced Materials, Inc. | Ink/dye receptive films, papers, and fabrics |
| ES2734266T3 (en) | 2010-07-29 | 2019-12-05 | Basf Se | Biologically Disposable Composite Films |
| US8956497B2 (en) | 2010-07-29 | 2015-02-17 | Basf Se | Biodisintegratable composite foils |
| CN103052694B (en) | 2010-07-30 | 2015-06-10 | 卡博特公司 | Polymeric pigment systems and methods |
| US9089624B2 (en) | 2010-08-23 | 2015-07-28 | Basf Se | Ultrathin fluid-absorbent cores comprising adhesive and having very low dry SAP loss |
| BR112013009422A2 (en) | 2010-10-19 | 2016-08-09 | Bayer Ip Gmbh | aqueous preparations with soft touch properties |
| JP5950933B2 (en) | 2010-12-20 | 2016-07-13 | ビーエーエスエフ ソシエタス・ヨーロピアＢａｓｆ Ｓｅ | Preparation of polyurethane-polyacrylate-hybrid dispersion |
| DE102011015459A1 (en) | 2011-03-29 | 2012-10-04 | Basf Se | Polyurethane composition useful as aqueous dispersion for coating e.g. leather and paper, comprises e.g. a diisocyanate, a diol, an oxy compound, a compound with isocyanate group, a compound with e.g. alcoholic hydroxyl groups |
| WO2012130711A2 (en) | 2011-03-30 | 2012-10-04 | Basf Se | Latent-reactive polyurethane dispersion with activatable crosslinking |
| US8841369B2 (en) | 2011-03-30 | 2014-09-23 | Basf Se | Latently reactive polyurethane dispersion with activatable crosslinking |
| US8999884B2 (en) | 2011-06-01 | 2015-04-07 | The Procter & Gamble Company | Absorbent structures with coated water-absorbing material |
| US8664151B2 (en) | 2011-06-01 | 2014-03-04 | The Procter & Gamble Company | Articles comprising reinforced polyurethane coating agent |
| JP6349258B2 (en) | 2011-11-18 | 2018-06-27 | ユニリーバー・ナームローゼ・ベンノートシヤープ | Composition with uniform adhesion and low friction loss |
| US20130295273A1 (en) * | 2012-05-01 | 2013-11-07 | Basf Se | Solution and method of treating a substrate with the solution |
| US10144553B2 (en) | 2012-07-04 | 2018-12-04 | Basf Se | Bonded packaging system for foods |
| KR102148348B1 (en) | 2012-09-04 | 2020-08-26 | 루브리졸 어드밴스드 머티어리얼스, 인코포레이티드 | Polyurethane/polyacrylic hybrid dispersions for shine applications in home care |
| WO2014044562A1 (en) | 2012-09-18 | 2014-03-27 | Basf Se | Polymers comprising a polyurethane backbone endcapped with reactive (meth)acrylic terminating groups and their use as adhesives |
| US9732026B2 (en) | 2012-12-14 | 2017-08-15 | Resinate Technologies, Inc. | Reaction products containing hydroxyalkylterephthalates and methods of making and using same |
| KR102030876B1 (en) | 2013-01-11 | 2019-10-10 | 다우 글로벌 테크놀로지스 엘엘씨 | Polyurethane dispersion based synthetic leathers |
| JP2015013914A (en) * | 2013-07-03 | 2015-01-22 | Dic株式会社 | Aqueous urethane resin composition and article |
| DE102014204582A1 (en) | 2014-03-12 | 2015-09-17 | Basf Se | New polymer dispersions |
| US10167408B2 (en) | 2014-04-25 | 2019-01-01 | Dsm Ip Assets B.V. | Aqueous composition with improved elongation at break |
| EP3155029A1 (en) | 2014-06-10 | 2017-04-19 | Basf Se | Polymer dispersions containine acylmorpholines |
| EP3174910A1 (en) | 2014-08-01 | 2017-06-07 | Basf Se | Methods for producing and using aqueous polyurethane/polyacrylate hybrid dispersions and use of said aqueous polyurethane/polyacrylate hybrid dispersions in coating agents |
| MX2017007329A (en) | 2014-12-05 | 2017-10-20 | Basf Se | Aqueous adhesive dispersion containing polyurethanes and ethoxylated fatty alcohols. |
| WO2016124251A1 (en) | 2015-02-06 | 2016-08-11 | Taminco | Aqueous polyurethane dispersions |
| WO2016162215A1 (en) | 2015-04-07 | 2016-10-13 | Basf Se | Polymer dispersions containing n-acylpyrrolidines |
| US11859099B2 (en) | 2015-06-01 | 2024-01-02 | Ndsu Research Foundation | Amphiphilic siloxane-polyurethane fouling-release coatings and uses thereof |
| WO2016196565A2 (en) * | 2015-06-01 | 2016-12-08 | Ndsu Research Foundation | Amphiphilic siloxane- polyurethane fouling-release coatings and uses thereof |
| US9828459B2 (en) | 2015-08-11 | 2017-11-28 | Momentive Performance Materials Inc. | Process for the preparation of silylated polymers employing a backmixing step |
| US10138324B2 (en) | 2015-08-11 | 2018-11-27 | Momentive Performance Materials Inc. | Process for the preparation of silylated polymers having low color and color stability |
| CN108137778A (en) | 2015-10-01 | 2018-06-08 | 帝斯曼知识产权资产管理有限公司 | For the halogen-free flameproof water-based paint compositions of textile |
| JP6869241B2 (en) | 2015-11-18 | 2021-05-12 | キャボット コーポレイションＣａｂｏｔ Ｃｏｒｐｏｒａｔｉｏｎ | Inkjet ink composition |
| EP3411441B1 (en) | 2016-02-03 | 2023-01-18 | Basf Se | One-component aqueous coating compositions containing polyurethane and phyllosilicates for oxygen barrier coatings |
| DE102017204525A1 (en) | 2016-03-23 | 2017-09-28 | Basf Se | Laminated laminates for flexible packaging |
| EP3491064B1 (en) | 2016-08-01 | 2021-09-01 | Stahl International B.V. | Polymer dispersions with reduced emission of acetaldehyde |
| US10982035B2 (en) | 2016-10-28 | 2021-04-20 | Agfa Nv | Polyurethane resin for ink jet ink |
| US10894856B2 (en) | 2016-11-09 | 2021-01-19 | Basf Se | Polyurethane-vinyl hybrid polymers, methods of making them and their use |
| MX2020000989A (en) * | 2017-07-25 | 2020-07-13 | Basf Coatings Gmbh | Two-component coating compositions for coating fiber-reinforced plastics materials. |
| MX2020001963A (en) | 2017-08-22 | 2020-03-24 | Sika Tech Ag | Mortar containing polyurethane dispersion with ethylene oxide units. |
| EP3694944B1 (en) | 2017-10-11 | 2024-04-24 | Basf Se | Protective films made of polyolefin support material, primer and radiation-crosslinkable hot melt adhesive |
| WO2019162206A2 (en) | 2018-02-21 | 2019-08-29 | Basf Se | Method for producing articles coated with adhesive |
| EP3775084A1 (en) | 2018-04-13 | 2021-02-17 | Basf Se | Oxygen scavenging aqueous lamination adhesive composition |
| EP3656524B1 (en) | 2018-11-21 | 2021-01-06 | Biofibre GmbH | Method of manufacturing biocomposite materials comprising cellulose |
| DE102019219214A1 (en) | 2018-12-17 | 2020-06-18 | Basf Se | Compositions comprising multifunctional vinyl compounds in mini-emulsion and their use as crosslinkers for polymers |
| WO2020144052A2 (en) | 2019-01-11 | 2020-07-16 | Basf Se | Film coating method using engraving roller system |
| US20220403162A1 (en) | 2019-11-19 | 2022-12-22 | Lubrizol Advanced Materials, Inc. | Polyurethane compositions salted with bisbiguanide |
| CN111138628B (en) * | 2020-01-14 | 2021-03-05 | 江苏钟山化工有限公司 | Preparation method of waterborne polyurethane for synthetic leather |
| EP4114875A1 (en) | 2020-03-02 | 2023-01-11 | Basf Se | Composite foils biodisintegratable at home compost conditions |
| US20230211598A1 (en) | 2020-06-09 | 2023-07-06 | Basf Se | Process for recycling of bonded articles |
| TW202200866A (en) * | 2020-06-11 | 2022-01-01 | 日商Ｄｉｃ股份有限公司 | Method for producing coagulated material |
| US20230416653A1 (en) | 2020-11-19 | 2023-12-28 | Lubrizol Advanced Materials, Inc. | Antimicrobial cleaning compositions containing polyurethane salted with bis-biguanide free base |
| WO2022132855A1 (en) | 2020-12-16 | 2022-06-23 | Lubrizol Advanced Materials, Inc | Antifog compositions and related methods |
| EP4274865A1 (en) | 2021-01-06 | 2023-11-15 | Henkel AG & Co. KGaA | Improved cr(iii)-based passivation for zinc-aluminum coated steel |
| WO2022179912A1 (en) | 2021-02-24 | 2022-09-01 | Basf Se | Adhesive labels comprising biodegradable aqueous polyurethane pressure-sensitive adhesive |
| WO2022223438A1 (en) | 2021-04-22 | 2022-10-27 | Basf Se | Process for preparing coated shaped bodies and their use |
| WO2023117980A1 (en) | 2021-12-21 | 2023-06-29 | Basf Se | Environmental attributes for plastic additives |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2835653A (en) * | 1953-03-19 | 1958-05-20 | Polaroid Corp | Polyoxyethylene substituted polymers and their preparation |
| DE1495745C3 (en) * | 1963-09-19 | 1978-06-01 | Bayer Ag, 5090 Leverkusen | Process for the production of aqueous, emulsifier-free polyurethane latices |
| US3666542A (en) * | 1969-01-31 | 1972-05-30 | Teijin Ltd | Process for the production of microporous structures |
| DE2009179C3 (en) * | 1970-02-27 | 1974-07-11 | Bayer Ag, 5090 Leverkusen | Process for the production of allophanate polyisocyanates |
| US3666835A (en) * | 1970-04-16 | 1972-05-30 | Sun Chemical Corp | Polyurethane systems |
| US3796678A (en) * | 1970-08-17 | 1974-03-12 | Minnesota Mining & Mfg | Highly branched,capped polyurethanes for pressure sensitive adhesives |
-
1973
- 1973-03-23 DE DE2314512A patent/DE2314512C3/en not_active Expired
-
1974
- 1974-03-13 CA CA194,918A patent/CA1037192A/en not_active Expired
- 1974-03-18 US US452163A patent/US3905929A/en not_active Expired - Lifetime
- 1974-03-20 AU AU66860/74A patent/AU6686074A/en not_active Expired
- 1974-03-20 CH CH381474A patent/CH606178A5/xx not_active IP Right Cessation
- 1974-03-20 GB GB1223774A patent/GB1412576A/en not_active Expired
- 1974-03-20 NL NL7403767A patent/NL7403767A/xx unknown
- 1974-03-20 DD DD177311A patent/DD115144A5/xx unknown
- 1974-03-21 BE BE142262A patent/BE812618A/en not_active IP Right Cessation
- 1974-03-21 AT AT235674A patent/AT334633B/en not_active IP Right Cessation
- 1974-03-21 LU LU69682A patent/LU69682A1/xx unknown
- 1974-03-22 JP JP3163474A patent/JPS5716127B2/ja not_active Expired
- 1974-03-22 FR FR7409978A patent/FR2222404B1/fr not_active Expired
- 1974-03-22 ES ES424519A patent/ES424519A1/en not_active Expired
- 1974-03-22 IT IT49531/74A patent/IT1005868B/en active
- 1974-03-22 BR BR2278/74A patent/BR7402278D0/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| ATA235674A (en) | 1976-05-15 |
| BR7402278D0 (en) | 1974-11-19 |
| BE812618A (en) | 1974-09-23 |
| JPS502794A (en) | 1975-01-13 |
| IT1005868B (en) | 1976-09-30 |
| US3905929A (en) | 1975-09-16 |
| DE2314512C3 (en) | 1980-10-09 |
| AU6686074A (en) | 1975-09-25 |
| DE2314512A1 (en) | 1974-10-17 |
| LU69682A1 (en) | 1974-10-17 |
| DD115144A5 (en) | 1975-09-12 |
| NL7403767A (en) | 1974-09-25 |
| FR2222404A1 (en) | 1974-10-18 |
| ES424519A1 (en) | 1976-06-01 |
| AT334633B (en) | 1976-01-25 |
| DE2314512B2 (en) | 1980-02-21 |
| JPS5716127B2 (en) | 1982-04-03 |
| FR2222404B1 (en) | 1978-01-06 |
| CH606178A5 (en) | 1978-10-31 |
| GB1412576A (en) | 1975-11-05 |
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