WO1984000372A1 - Low viscosity stable aqueous dispersion of graft carbon black - Google Patents
Low viscosity stable aqueous dispersion of graft carbon black Download PDFInfo
- Publication number
- WO1984000372A1 WO1984000372A1 PCT/EP1983/000175 EP8300175W WO8400372A1 WO 1984000372 A1 WO1984000372 A1 WO 1984000372A1 EP 8300175 W EP8300175 W EP 8300175W WO 8400372 A1 WO8400372 A1 WO 8400372A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- carbon black
- dispersion
- peroxide
- particles
- grafted
- Prior art date
Links
- 239000006229 carbon black Substances 0.000 title claims abstract description 85
- 239000006185 dispersion Substances 0.000 title claims abstract description 41
- 239000000178 monomer Substances 0.000 claims abstract description 26
- 239000003513 alkali Substances 0.000 claims abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 34
- 239000002245 particle Substances 0.000 claims description 28
- 238000000034 method Methods 0.000 claims description 21
- 238000006116 polymerization reaction Methods 0.000 claims description 20
- 150000002978 peroxides Chemical class 0.000 claims description 18
- 239000000203 mixture Substances 0.000 claims description 15
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 13
- 238000005502 peroxidation Methods 0.000 claims description 12
- AZQWKYJCGOJGHM-UHFFFAOYSA-N 1,4-benzoquinone Chemical compound O=C1C=CC(=O)C=C1 AZQWKYJCGOJGHM-UHFFFAOYSA-N 0.000 claims description 10
- 150000001412 amines Chemical class 0.000 claims description 10
- 239000007787 solid Substances 0.000 claims description 8
- 239000000725 suspension Substances 0.000 claims description 8
- 229910052783 alkali metal Inorganic materials 0.000 claims description 7
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 claims description 6
- 150000001340 alkali metals Chemical class 0.000 claims description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 6
- 230000003381 solubilizing effect Effects 0.000 claims description 6
- 229920001519 homopolymer Polymers 0.000 claims description 5
- 239000004615 ingredient Substances 0.000 claims description 5
- 230000003287 optical effect Effects 0.000 claims description 5
- 229920001577 copolymer Polymers 0.000 claims description 4
- 238000009472 formulation Methods 0.000 claims description 4
- 239000006232 furnace black Substances 0.000 claims description 4
- 238000010526 radical polymerization reaction Methods 0.000 claims description 4
- 239000004094 surface-active agent Substances 0.000 claims description 4
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims description 3
- 239000006096 absorbing agent Substances 0.000 claims description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 239000000975 dye Substances 0.000 claims description 3
- 239000003112 inhibitor Substances 0.000 claims description 3
- 239000003999 initiator Substances 0.000 claims description 3
- 239000001301 oxygen Substances 0.000 claims description 3
- 229910052760 oxygen Inorganic materials 0.000 claims description 3
- 229920000058 polyacrylate Polymers 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- 239000000080 wetting agent Substances 0.000 claims description 3
- 150000004973 alkali metal peroxides Chemical class 0.000 claims description 2
- 239000011230 binding agent Substances 0.000 claims description 2
- 239000006231 channel black Substances 0.000 claims description 2
- 229920000578 graft copolymer Polymers 0.000 claims description 2
- 239000006233 lamp black Substances 0.000 claims description 2
- 125000005342 perphosphate group Chemical group 0.000 claims description 2
- OUUQCZGPVNCOIJ-UHFFFAOYSA-M Superoxide Chemical compound [O-][O] OUUQCZGPVNCOIJ-UHFFFAOYSA-M 0.000 claims 1
- 239000000853 adhesive Substances 0.000 claims 1
- 230000001070 adhesive effect Effects 0.000 claims 1
- 238000013019 agitation Methods 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 claims 1
- 229910052751 metal Inorganic materials 0.000 claims 1
- 239000002184 metal Substances 0.000 claims 1
- 239000007870 radical polymerization initiator Substances 0.000 claims 1
- 239000006234 thermal black Substances 0.000 claims 1
- 229920000642 polymer Polymers 0.000 abstract description 6
- 235000019241 carbon black Nutrition 0.000 description 71
- 229940105289 carbon black Drugs 0.000 description 70
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 27
- 239000000976 ink Substances 0.000 description 20
- KWYHDKDOAIKMQN-UHFFFAOYSA-N N,N,N',N'-tetramethylethylenediamine Chemical compound CN(C)CCN(C)C KWYHDKDOAIKMQN-UHFFFAOYSA-N 0.000 description 19
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 14
- 239000000243 solution Substances 0.000 description 11
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 9
- 238000006243 chemical reaction Methods 0.000 description 7
- 239000007900 aqueous suspension Substances 0.000 description 6
- 238000005119 centrifugation Methods 0.000 description 6
- 238000002474 experimental method Methods 0.000 description 5
- 150000003254 radicals Chemical class 0.000 description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 4
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 4
- 241000872198 Serjania polyphylla Species 0.000 description 3
- 239000003153 chemical reaction reagent Substances 0.000 description 3
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 3
- 238000010790 dilution Methods 0.000 description 3
- 239000012895 dilution Substances 0.000 description 3
- -1 me thacrylamide Chemical compound 0.000 description 3
- 238000006386 neutralization reaction Methods 0.000 description 3
- 230000035484 reaction time Effects 0.000 description 3
- 238000010992 reflux Methods 0.000 description 3
- 238000004062 sedimentation Methods 0.000 description 3
- 239000011734 sodium Substances 0.000 description 3
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 2
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- 229940048053 acrylate Drugs 0.000 description 2
- 150000001252 acrylic acid derivatives Chemical class 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 150000001447 alkali salts Chemical group 0.000 description 2
- 239000012736 aqueous medium Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000002209 hydrophobic effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910052700 potassium Inorganic materials 0.000 description 2
- 239000011591 potassium Substances 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 description 2
- PQUXFUBNSYCQAL-UHFFFAOYSA-N 1-(2,3-difluorophenyl)ethanone Chemical compound CC(=O)C1=CC=CC(F)=C1F PQUXFUBNSYCQAL-UHFFFAOYSA-N 0.000 description 1
- NJMYQRVWBCSLEU-UHFFFAOYSA-N 4-hydroxy-2-methylidenebutanoic acid Chemical compound OCCC(=C)C(O)=O NJMYQRVWBCSLEU-UHFFFAOYSA-N 0.000 description 1
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 1
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 1
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- PHMNXPYGVPEQSJ-UHFFFAOYSA-N Dimethoxane Chemical compound CC1CC(OC(C)=O)OC(C)O1 PHMNXPYGVPEQSJ-UHFFFAOYSA-N 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical class CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 1
- NTIZESTWPVYFNL-UHFFFAOYSA-N Methyl isobutyl ketone Chemical compound CC(C)CC(C)=O NTIZESTWPVYFNL-UHFFFAOYSA-N 0.000 description 1
- UIHCLUNTQKBZGK-UHFFFAOYSA-N Methyl isobutyl ketone Natural products CCC(C)C(C)=O UIHCLUNTQKBZGK-UHFFFAOYSA-N 0.000 description 1
- WHNWPMSKXPGLAX-UHFFFAOYSA-N N-Vinyl-2-pyrrolidone Chemical compound C=CN1CCCC1=O WHNWPMSKXPGLAX-UHFFFAOYSA-N 0.000 description 1
- 229920001214 Polysorbate 60 Polymers 0.000 description 1
- DWAQJAXMDSEUJJ-UHFFFAOYSA-M Sodium bisulfite Chemical compound [Na+].OS([O-])=O DWAQJAXMDSEUJJ-UHFFFAOYSA-M 0.000 description 1
- 239000004288 Sodium dehydroacetate Substances 0.000 description 1
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 description 1
- 239000007983 Tris buffer Substances 0.000 description 1
- DPRMFUAMSRXGDE-UHFFFAOYSA-N ac1o530g Chemical compound NCCN.NCCN DPRMFUAMSRXGDE-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000008044 alkali metal hydroxides Chemical class 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Natural products N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
- 235000011114 ammonium hydroxide Nutrition 0.000 description 1
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium peroxydisulfate Substances [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 description 1
- VAZSKTXWXKYQJF-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)OOS([O-])=O VAZSKTXWXKYQJF-UHFFFAOYSA-N 0.000 description 1
- 229910001870 ammonium persulfate Inorganic materials 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- WPKYZIPODULRBM-UHFFFAOYSA-N azane;prop-2-enoic acid Chemical class N.OC(=O)C=C WPKYZIPODULRBM-UHFFFAOYSA-N 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- DMSMPAJRVJJAGA-UHFFFAOYSA-N benzo[d]isothiazol-3-one Chemical compound C1=CC=C2C(=O)NSC2=C1 DMSMPAJRVJJAGA-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000006172 buffering agent Substances 0.000 description 1
- CQEYYJKEWSMYFG-UHFFFAOYSA-N butyl acrylate Chemical compound CCCCOC(=O)C=C CQEYYJKEWSMYFG-UHFFFAOYSA-N 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 150000007942 carboxylates Chemical group 0.000 description 1
- 244000221110 common millet Species 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 238000000502 dialysis Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- NHWGPUVJQFTOQX-UHFFFAOYSA-N ethyl-[2-[2-[ethyl(dimethyl)azaniumyl]ethyl-methylamino]ethyl]-dimethylazanium Chemical compound CC[N+](C)(C)CCN(C)CC[N+](C)(C)CC NHWGPUVJQFTOQX-UHFFFAOYSA-N 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000004108 freeze drying Methods 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 1
- 125000004029 hydroxymethyl group Chemical group [H]OC([H])([H])* 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 150000008040 ionic compounds Chemical class 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 150000002734 metacrylic acid derivatives Chemical class 0.000 description 1
- 229940043265 methyl isobutyl ketone Drugs 0.000 description 1
- 125000000896 monocarboxylic acid group Chemical group 0.000 description 1
- 230000003472 neutralizing effect Effects 0.000 description 1
- 150000002825 nitriles Chemical group 0.000 description 1
- VIKNJXKGJWUCNN-XGXHKTLJSA-N norethisterone Chemical compound O=C1CC[C@@H]2[C@H]3CC[C@](C)([C@](CC4)(O)C#C)[C@@H]4[C@@H]3CCC2=C1 VIKNJXKGJWUCNN-XGXHKTLJSA-N 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 229940047670 sodium acrylate Drugs 0.000 description 1
- 229940001607 sodium bisulfite Drugs 0.000 description 1
- 229940079839 sodium dehydroacetate Drugs 0.000 description 1
- 235000019259 sodium dehydroacetate Nutrition 0.000 description 1
- 235000010267 sodium hydrogen sulphite Nutrition 0.000 description 1
- 235000010265 sodium sulphite Nutrition 0.000 description 1
- DSOWAKKSGYUMTF-GZOLSCHFSA-M sodium;(1e)-1-(6-methyl-2,4-dioxopyran-3-ylidene)ethanolate Chemical compound [Na+].C\C([O-])=C1/C(=O)OC(C)=CC1=O DSOWAKKSGYUMTF-GZOLSCHFSA-M 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000010557 suspension polymerization reaction Methods 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/30—Inkjet printing inks
- C09D11/32—Inkjet printing inks characterised by colouring agents
- C09D11/324—Inkjet printing inks characterised by colouring agents containing carbon black
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F292/00—Macromolecular compounds obtained by polymerising monomers on to inorganic materials
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/02—Printing inks
- C09D11/03—Printing inks characterised by features other than the chemical nature of the binder
- C09D11/037—Printing inks characterised by features other than the chemical nature of the binder characterised by the pigment
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S260/00—Chemistry of carbon compounds
- Y10S260/38—Ink
Definitions
- the present invention relates to aqueous suspension or dispersion of carbon black and, more especially to an aqueous suspension of carbon black the particles of which are grafted with chemically bonded hydrosoluble polyolefinic chains, preferably polymers or copolymers of acrylic monomers and, more particularly, ammonium and alkali metal polyacrylates.
- polyolefine designates free radical polymerizable double-bonded monomers carrying water solubilizing functions. Details on such monomers are provided hereafter.
- the invention also concerns a method for preparing such an aqueous suspension and the use thereof for manufacturing ink compositions, namely inks for jet-printing with jet-printing machines.
- Carbon-black being essentially hydrophobic, attempts have been made to attain the above-mentioned proparties by grafting water soluble polymeric radicals onto the carbon black particles thus making them water oompatible and freely dispersible in water.
- GB-A 1,421,529 there is disclosed the suspension polymerization into granules of olefinically unsaturated monomers in aqueous media in the presence of carbon black and appropriate surfactants. After polymerization, the formed polymer beads having the carbon black incorporated therein are separated fron the water phase and expanded.
- grafting and polymerization be carried out in water in such manner that a suitable aqueous dispersion or suspension of grafted carbon black be obtained which, afterwards, can be directly converted into jet-ink composition by the addition of the usual additional jet-ink components.
- aqueous suspensions or dispersions of carbon black particles be obtained, the particles of which are rendered suf ficiently hydrophilic to become highly water compatible and thus provide very low viscosity solutions even at high solid content. In such cases, the solubilizing power of the groups grafted on the particles is so great that dispersions very near to real solutions are involved.
- the aqueous suspension of grafted carbon black of the invention has been obtained in this manner.
- its concentration by weight of grafted carbon black is from about 1 to 15% and its viscosity is from about only 2 to 30 cP at room temperature.
- the weight amount of water solubilizing grafted polymer or copolymer chains is preferably from about 0.0001 to about 0.002 g (or 0.1 mg to 2 mg) per square meter of the surface of the carbon black particles which is indeed an extremelly small amount relative to the teaching of the prior art.
- the weight required of carbon black particles for making 1 m 2 varies from about 0.003 g to about 0.16 g, depending on the kind and grade, the weight of grafted material per gram of carbon black will be from about 0.0006 to 0.6 g; however, carbon blacks of graces ranging from 15 to 150 m 2 / g (ie 0.006 to 0.06 g / m 2 ) are usually preferred.
- the number of monomer units linked together in the grafted chains is preferably from about 20 to 200.
- the length of the grafted chains should be sufficient to therefore provide adequate "solubility in water” (ie remarkably good dispersibility of the grafted particles) but not too great to avoid too large molecular weights with consequent too high viscosity and filterability problems.
- This also contrasts with the prior art where simultaneous grafting and polymerization to high polymers occurs thus preventing the formation of "near solutions” of carbon black in water like in the invention.
- the present suspension filters rapidly through a 10 ⁇ mesh screen and slowly but acceptably through a 1 ⁇ mesh screen (for instance at a rate of 0.1 to 10 ml / min depending on pore size).
- the polyacrylate chains do crimp or coil at short distance from the carbon black surface and pack over such surface with the carboxylate functions pointing radially toward the outside thus providing the right solubility properties, this being so when the pH is kept preferably between about 5 and 9. Indeed, it has been shown that outside this pH range, the present dispersion looses somewhat its desirable properties (eg sedimentation may occur). It is particularly remarkable that hydrophobic carbon black particles can be made so well dispersible, ie nearly soluble, in water with grafted quantities of acrylate as low as about a tenth of a milli gram per square meter of the carbon black.
- the method of preparation of the aqueous dispersion of grafted carbon black of the invention comprises treating carbon black in water with a water soluble peroxide and, after peroxidation, adding a water soluble acrylic monomar and a further amount of peroxide, whereby homogeneous free radical polymerization of the monomer and grafting on the carbon black particles will occur simultaneously.
- the reaction may be carried out in the absence or in the presence of a free radical polymerization accelerator, for instance an ami ne accelerator.
- Carbon black is essentially composed of carbon particles of ge nerally spherical shape bearing boundary oxygenated functions such as carboxylic, phenolic and quinonic functions.
- the phenolic and quinonic functions can act as polymerization quenchers as they will form, when reacting with initiators (for instance CE 2 -CH 2 R), stabilized radicals (unreactive) viz.
- initiators for instance CE 2 -CH 2 R
- stabilized radicals unreactive
- peroxides for instance RCO-O-O-COR
- reaction (3) The radicals formed in reaction (3) will therefore promote olefinic polymerization instead of inhibiting it as in reactions ⁇ and
- the peroxides used in the present method are water soluble peroxides such as airmonium and alkali metal persalts, e.g. sodium, potassium and ammonium parsulfate and the corresponding perphosphates, perborates and the like; alkali metal peroxides and hydrogen peroxide can also be used.
- Other peroxide initiators suitable in the present invention are listsd in Encyclopedia of Polymer Science & Technology, vol. 2, Interscience Publishers, p. 230-233, (1965).
- the polymerizable olefinic monomers usable in the present method are preferably the water soluble acrylic monomers such as the alkali metal and ammonium acrylates and methacrylates unsubstituted or substituted by water solubilizing functions such as hydroxylic, ketonic and nitrile functions.
- alkali metals include sodium, potassium, lithium and higher molecular weight alkali metals; ammonium includes the group and in which R can be hy drugs or alkyl groups commonly found in current chemical practice.
- Substituted and unsubstituted acrylic and methacrylic acid compounds with unsalted free carboxylic groups are also usable but less preferred as the vis ⁇ osities of the resulting graft carbon black aqueous dispersions thus obtained are not as low as when using the monomers in the alkali salt form. Furthermore, it was found that when treating such free COOH containing graft carbon black aqueous dispersions with alkali metal hydroxide in view of obtaining dispersions identical with that obtained directly with the alkali salt monomers, viscosities increased quite unexpectedly instead of decreasing.
- water soluble vinyl monomers such as acrylamide, me thacrylamide, N-vinyl-pyrrolidone and hydroxyethyl acrylic acid are also possible preferably in admixture with the aforementioned acrylates.
- Some further monomers usable in this invention are listed in the aforementioned Encyclopedia of Polymer Science & Technology re ference.
- the carbon black can be selected from various sources and in clude the usual types of carbon black, namely channel black, therm al black, lamp black and furnace black. Furnace black is preferred.
- Reference on carbon usable in this invention are: DONNET and VOET: Carbon Black Ehysics, Chemistry and Elastomer Reinforcement, Marcel Dekker Inc., (1976).
- accelerators are used in the present method, commonly avail able free radical polymerization acceleratorrators can be used; amine ac celerators are ⁇ onvenient such as tetramethyl ethylenediamine, pen tamethyl diethylene tetramine, hexamethyl triethylene pentamine and the like.
- the ingredients for carrying out the present simultaneous polymerization and grafting of carbon black with olefinic monomers, it is preferable to agitate the ingredients in water at a temperature from 50 ° C to 100 ° C, preferably at reflux temperature.
- the reaction time is from about 1 hr to about 60 hrs at reflux temperature although longer reaction times are not harmful but not economical.
- the ungrafted homopolymer which is produced as a by product can be removed by usual techniques, eg freeze drying, centrifugation or dialysis but, for most uses, this is not necessary, the presence of such homopolymers not being detrimental for further uses of the grafted carbon black dispersion in jet-ink compositions.
- the presence of the homopolymers in the solution will serve as a binder ingredient useful for improving the adhesion of the ink on the printed surfaces and the cohesion of the carbon black particles together.
- This factor was unexpected and surprising and provides a considerable advantage to the dispersion of the invention over the prior art compositions in jet-ink applications.
- the quantities of reagents to be used in the method of the invention are as follows: in the first peroxidation stage, there can be used for 100 g of carbon black from about 10 to 50 g of peroxide counted as K 2 S 2 O 8 or mole-equivalents of other water soluble peroxides and, when an amine accelerator is used, about 0.1 to 5 g of such an amine, eg N-tetramethyl ethylenediamine (TEMED) or mole-equivalent quantities of other amine accelerators. These quantities are however not critical provided enough paroxidant is used.
- the peroxidation can be carried out at 50 - 100 ° C under stirring in water for about 1 to 24 hrs but these conditions are not critical provided that the reaction is allowed to go to completion.
- the quantities of olefinic monomers that can be used can vary from approximately 0.01 mole-equivalent to about 0.5 mole-equivalent per gram of carbon black.
- the quantities of monomers to be used are obviously related to the density of grafting sites on the carbon black particles that varies considerably from one type of carbon black to the other and is generally related to the quinone and phenol function area density on the particles.
- the amount of peroxide to be used in the polymerization grafting stages depends on the amount of monomer used and can be comprised from about 0.01 g to 0.1 g (counted as K 2 S 2 O 8 ) per gram of the monomer. Equivalents of other peroxides are also usable. When using also an amine accelerator, for instance TEMED or equivalents of other amine acceLerators, quantities of the order of 0.01 to 1 g of TEMED per gram of peroxide (counted as K 2 S 2 O 8 ) are also usable. All the above reagent ratios and quantities are not critical and can fall short of or exceed the given limits in some cases, provided of course, that the amounts of respective reagents are enough for accomplishing the reactions and not in such excess as becoming non economical.
- the aqueous suspension of grafted carbon black of this invention is directly usable for making jet-ink compositions.
- suitable amounts of usual jet-ink additives such as wetting agents, surfactants and viscosity controlling agents, dyes, mold inhibitors, oxygen absorbers, buffering agents, pH Controlling agents.
- jet-ink additives such as wetting agents, surfactants and viscosity controlling agents, dyes, mold inhibitors, oxygen absorbers, buffering agents, pH Controlling agents.
- surfactant products non ionic compounds such as polyoxyethylene sorbitan ironolaurate and the like are preferred.
- polygly ⁇ ols or glycolamines such as diethylene glycol, glycerine, ⁇ -thiodiglyool, triethanolamine and N, N-dimethoxy-methyl-2-imidazolidone are suitable.
- the quantities of such additives will conform to usual practice.
- dyes CI acid black Nos. 1, 24, 26, 48, 58, 60, 109, 119 and 131 can be used.
- mold inhibitors sodium dehydroacetate, 1,2-benz isothiazolin-3-one, 6-acetoxy-2,4-dimethyl-m-dioxane or formaldehy de can be used.
- oxygen absorbers sodium sulfite, sodium bisul fite can be used.
- pH Controlling agents HCl and NaOH can be used.
- the aqueous dispersion of the invention can be used for many other purposes.
- inks for fountainpen, ballpoint pen, feit pen, intaglio, rotogravure, rotary printing, elas tographic printing, typographic printing, rotary news-paper and the like.
- inks for fountainpen, ballpoint pen, feit pen, intaglio, rotogravure, rotary printing, elas tographic printing, typographic printing, rotary news-paper and the like.
- inks for fountainpen, ballpoint pen, feit pen, intaglio, rotogravure, rotary printing, elas tographic printing, typographic printing, rotary news-paper and the like.
- the following examples illustrate the invention.
- TRIS-TEMED means tris- (hydroxymethyl) -aminomethans
- Dispersions (G and H) of corresponding concentrations were made exactly as disclosed for dispersions E and F, respectively, but replacing the "Regal-R" carbon black by type "Elftex-5" (Furnace black) carbon black.
- Dispersion G had a pH of 5.7 and a viscosity in undiluted form of 12.1 cP; it did not settle after 30 min centrifugation.
- Dispersion H had a pH of 5.4 and a viscosity of 7.1 cP in undiluted form. It settled after 24 min centrifugation. There was no substantial precipitation after 1 year storage at rcom temperature.
- Example 2 The experiment of Example 2 was repeated four times (samples I1 - 14) using 100 g of water, 15 g of carbon black ("Elftex-5") 1.5 g of K 2 S 2 O 8 , 0.3 ml of TEMED and a temperature of 95 ° C in the peroxidation stage, and 22.5 g of acrylic acid, 65 ml of 30% NaOH, 2 g of K 2 S 2 O 8 , 1 ml of TEMED, and 35 - 40 hrs boiling temperature (98 ° C) in the polymerization grafting stage.
- the variable was the peroxidation duration which was 1 hr (I1), 2 hrs (I2), 4 hrs (I3) and 6 hrs (I4).
- Bsroxidation stage water 100 ml; carbon black ("Elftex-5") 15 g;
- Peroxidation stage water 100 ml; carbon black ("Elftex-5") 15 g; K 2 S 2 O 8 3 g; TEMED 0.3 ml; 2 hrs at 95 ° C
- example L1 to L4 were carried out with variable amounts of acrylic monomer, K 2 S 2 O 8 and TEMED in the polymerization grafting stage (see Table III below). Moreover, the following conditions were used:
- Peroxidation stage water 100 ml; carbon black ("Elftex-5") 15 g;
- Grafting & Polymerization stage acrylic acid, K 2 S 2 O 8 and TE MED according to Table below; 46 hrs at 98 ° C; neutralization NaOH 65 ml of aqueous solution containing required NaOH neutralizing equi valent.
- the sedimentation time after centrifugation at 3300 rpm is also shown in Table III.
- the grafting level for samples L1 and L2 was considered border line to achieve optimal conditions of opacity and viscosities. (for opacity ireasurerrents, see for instance Example 9)
- a sample of grafted carbon black was prepared under the same conditions pertaining to sample L6 in Example 7 but varying the graft ing and polymerization duration.
- The. other general reaction parameters are listed below: Peroxidation stage: water 100 g; carbon black ("Elftex-5") 15 g; K 2 S 2 O 8 3 g; TEMED 0.3 ml; 2 hrs at 95 ° c.
- Opacities were measured as follows: about 0.5 to 1 g of the ink composition was placed on a piece of jet-print paper and spread to
Description
LOW VISCOSITY STABLE AQUEOUS DISPERSION OF GRAFT CARBON BLACK
The present invention relates to aqueous suspension or dispersion of carbon black and, more especially to an aqueous suspension of carbon black the particles of which are grafted with chemically bonded hydrosoluble polyolefinic chains, preferably polymers or copolymers of acrylic monomers and, more particularly, ammonium and alkali metal polyacrylates. In the present disclosure, the word "polyolefine" designates free radical polymerizable double-bonded monomers carrying water solubilizing functions. Details on such monomers are provided hereafter. The invention also concerns a method for preparing such an aqueous suspension and the use thereof for manufacturing ink compositions, namely inks for jet-printing with jet-printing machines.
It is well known that jet-printing imposes certain difficult to achieve contingencies upon the ink compositions to be used. For instance, such inks must have a high optical density, i.e. contain a relatively high concentration of carbon-black and simultaneously show a very low viscosity and surface tension, i.e. of the order of 1.5 to 10 cP and 30 to 50 dynes.cm, respectively. Also, the carbonblack particles ought to be very fine so as to preferably pass fre ely through fine filters, e.g. 1 to 50 μ mesh filters. Further, in such suspensions, the carbon-black particles should not settle with time, i.e . they should remain in suspension for extended periods.
Carbon-black being essentially hydrophobic, attempts have been made to attain the above-mentioned proparties by grafting water soluble polymeric radicals onto the carbon black particles thus making them water oompatible and freely dispersible in water.
Thus, in Japanese (opi) Patent Application 80 ,147561 (CA. 94, 192963) there is disclosed the grafting of carbon black particles with acrylic acid in ethanol in the presence of α, α ' -azoisobutyronitrile (AIBN) and under irradiation. The thermal grafting and polymerization of acrylate esters on carbon black is also disclosed in CA. 94, 48453. In Japanese (opi) Application 74,81038 there i s
disclosed the polymerization and grafting of styrene on carbon black in the presence of AIBN at 140°C (CA. 82, 163002) and in Japanese Patent Publication 74,11557 (CA. 81, 106311) there is disclosed the polymerization and grafting on carbon black of acrylonitrile in the presence of AIBN in DMF. In DOS 2.130.617 (CA. 76, 113947) , there is described the direct grafting on carbon black of prepolymerized monomers and in Japanese Patent Publication 71,26970 as well as in GB-A-1.191.872, there is described the manufacture of carbon black with grafted acrylic acid and butyl acrylate σopolymers in methyl-isobutylketone and other organic solvents. Such grafted carbon black can be easily dispersed in aqueous ammonia solutions.
In GB-A 1.421.529 there is disclosed the suspension polymerization into granules of olefinically unsaturated monomers in aqueous media in the presence of carbon black and appropriate surfactants. After polymerization, the formed polymer beads having the carbon black incorporated therein are separated fron the water phase and expanded.
The above techniques are effective but they either provide no homogeneously dispersed hydrophil ized carbon black particles or they rely on the use of organic or aqueous-organic solvants for undertaking the grafting of the carbon black particles. Yet, when such grafted particles must be used in aqueous jet-ink formulations, the organic solvants must first be removed and the particles must be redispersed in the aqueous media suitable for such inks. Now, it has been found that such method is tedious and that the grafted particles do not disperse sufficiently well in the jet-ink formulations for providing compositions suitable for being used in jet-printing ma chines.
Consequently, it was desirable that grafting and polymerization be carried out in water in such manner that a suitable aqueous dispersion or suspension of grafted carbon black be obtained which, afterwards, can be directly converted into jet-ink composition by the addition of the usual additional jet-ink components. It was further desirable that aqueous suspensions or dispersions of carbon black particles be obtained, the particles of which are rendered suf ficiently hydrophilic to become highly water compatible and thus provide very low viscosity solutions even at high solid content. In such cases, the solubilizing power of the groups grafted on the particles
is so great that dispersions very near to real solutions are involved. The aqueous suspension of grafted carbon black of the invention has been obtained in this manner. It is characterized by the following Parameters: its concentration by weight of grafted carbon black is from about 1 to 15% and its viscosity is from about only 2 to 30 cP at room temperature. The weight amount of water solubilizing grafted polymer or copolymer chains is preferably from about 0.0001 to about 0.002 g (or 0.1 mg to 2 mg) per square meter of the surface of the carbon black particles which is indeed an extremelly small amount relative to the teaching of the prior art. Since the weight required of carbon black particles for making 1 m2 varies from about 0.003 g to about 0.16 g, depending on the kind and grade, the weight of grafted material per gram of carbon black will be from about 0.0006 to 0.6 g; however, carbon blacks of graces ranging from 15 to 150 m2/g (i.e. 0.006 to 0.06 g/m2) are usually preferred. The number of monomer units linked together in the grafted chains is preferably from about 20 to 200. The length of the grafted chains should be sufficient to therefore provide adequate "solubility in water" (i.e. remarkably good dispersibility of the grafted particles) but not too great to avoid too large molecular weights with consequent too high viscosity and filterability problems. This also contrasts with the prior art where simultaneous grafting and polymerization to high polymers occurs thus preventing the formation of "near solutions" of carbon black in water like in the invention. With the above ränge of grafted chains, the present suspension filters rapidly through a 10 μ mesh screen and slowly but acceptably through a 1 μ mesh screen (for instance at a rate of 0.1 to 10 ml/min depending on pore size). It is believed that the polyacrylate chains do crimp or coil at short distance from the carbon black surface and pack over such surface with the carboxylate functions pointing radially toward the outside thus providing the right solubility properties, this being so when the pH is kept preferably between about 5 and 9. Indeed, it has been shown that outside this pH range, the present dispersion looses somewhat its desirable properties (e.g. sedimentation may occur). It is particularly remarkable that hydrophobic carbon black particles can be made so well dispersible, i.e. nearly soluble, in water with grafted quantities of acrylate as low as about a tenth of a milli
gram per square meter of the carbon black. Naturally, the aforemen tioned parameters are not critically limiting and can exceed or fall short of the above mentioned ranges without departing from the scope of the invention. The method of preparation of the aqueous dispersion of grafted carbon black of the invention comprises treating carbon black in water with a water soluble peroxide and, after peroxidation, adding a water soluble acrylic monomar and a further amount of peroxide, whereby homogeneous free radical polymerization of the monomer and grafting on the carbon black particles will occur simultaneously. The reaction may be carried out in the absence or in the presence of a free radical polymerization accelerator, for instance an ami ne accelerator.
Regarding mechanistic considerations pertaining to radical graft ing on carbon black, the following information can be provided.
Carbon black is essentially composed of carbon particles of ge nerally spherical shape bearing boundary oxygenated functions such as carboxylic, phenolic and quinonic functions.
The phenolic and quinonic functions can act as polymerization quenchers as they will form, when reacting with initiators (for instance CE2-CH2R) , stabilized radicals (unreactive) viz.
In contrast, peroxides (for instance RCO-O-O-COR) will probably predominantly react as follows:
The radicals formed in reaction (3) will therefore promote olefinic polymerization instead of inhibiting it as in reactions ➀ and
The peroxides used in the present method are water soluble peroxides such as airmonium and alkali metal persalts, e.g. sodium, potassium and ammonium parsulfate and the corresponding perphosphates, perborates and the like; alkali metal peroxides and hydrogen peroxide can also be used. Other peroxide initiators suitable in the present invention are listsd in Encyclopedia of Polymer Science & Technology, vol. 2, Interscience Publishers, p. 230 - 233, (1965) .
The polymerizable olefinic monomers usable in the present method are preferably the water soluble acrylic monomers such as the alkali metal and ammonium acrylates and methacrylates unsubstituted or substituted by water solubilizing functions such as hydroxylic, ketonic and nitrile functions. Of course, alkali metals include sodium, potassium, lithium and higher molecular weight alkali metals; ammonium includes the group
and in which R can be hy
drogen or alkyl groups commonly found in current chemical practice. Substituted and unsubstituted acrylic and methacrylic acid compounds with unsalted free carboxylic groups are also usable but less preferred as the visσosities of the resulting graft carbon black aqueous dispersions thus obtained are not as low as when using the monomers in the alkali salt form. Furthermore, it was found that when treating such free COOH containing graft carbon black aqueous dispersions with alkali metal hydroxide in view of obtaining dispersions identical with that obtained directly with the alkali salt monomers, viscosities increased quite unexpectedly instead of decreasing. In addition, other water soluble vinyl monomers such as acrylamide, me thacrylamide, N-vinyl-pyrrolidone and hydroxyethyl acrylic acid are also possible preferably in admixture with the aforementioned acrylates. Some further monomers usable in this invention are listed in the aforementiored Encyclopedia of Polymer Science & Technology re ference.
The carbon black can be selected from various sources and in clude the usual types of carbon black, namely channel black, therm al black, lamp black and furnace black. Furnace black is preferred. Reference on carbon usable in this invention are: DONNET and VOET:
Carbon Black Ehysics, Chemistry and Elastomer Reinforcement, Marcel Dekker Inc. , (1976) .
If accelerators are used in the present method, commonly avail able free radical polymerization acσelerators can be used; amine ac celerators are σonvenient such as tetramethyl ethylenediamine, pen tamethyl diethylene tetramine, hexamethyl triethylene pentamine and the like.
For carrying out the present simultaneous polymerization and grafting of carbon black with olefinic monomers, it is preferable to agitate the ingredients in water at a temperature of 50°C to 100°C, preferably at reflux temperature . The reaction time is from about 1 hr to about 60 hrs at reflux temperature although longer reaction times are not harmful but not economical. After cooling, the ungrafted homopolymer which is produced as a by product can be removed by usual techniques, e.g. freeze drying, centrifugation or dialysis but, for most uses, this is not necessary, the presence of such homopolymers not being detrimental for further uses of the grafted carbon black dispersion in jet-ink compositions. On the contrary, the presence of the homopolymers in the solution will serve as a binder ingredient useful for improving the adhesion of the ink on the printed surfaces and the cohesion of the carbon black particles together. This factor was unexpected and surprising and provides a considerable advantage to the dispersion of the invention over the prior art compositions in jet-ink applications. The quantities of reagents to be used in the method of the invention are as follows: in the first peroxidation stage, there can be used for 100 g of carbon black from about 10 to 50 g of peroxide counted as K2S2O8 or mole-equivalents of other water soluble peroxides and, when an amine accelerator is used, about 0.1 to 5 g of such an amine, e.g. N-tetramethyl ethylenediamine (TEMED) or mole-equivalent quantities of other amine accelerators. These quantities are however not critical provided enough paroxidant is used. The peroxidation can be carried out at 50 - 100°C under stirring in water for about 1 to 24 hrs but these conditions are not critical provided that the reaction is allowed to go to completion.
In the second stage, i.e. the grafting stage, the quantities of olefinic monomers that can be used can vary from approximately
0.01 mole-equivalent to about 0.5 mole-equivalent per gram of carbon black. The quantities of monomers to be used are obviously related to the density of grafting sites on the carbon black particles that varies considerably from one type of carbon black to the other and is generally related to the quinone and phenol function area density on the particles. Acσording to the data of the main manufacturers of carbon black, such quinone and phenol group densities can vary from about 1 to about 3000 μ equiv./g of carbon black which, in view of the aforegiven ränge of area per gram values (depending on the kind of carbon black) will provide figures ranging from about 0.01 μ equiv./m2 to about 10 μ equiv./m2. Thus, the amount of monomer in the grafting stage will be adapted as a function of the grafting equivalence selected and the grafting site density of the carbon black used. The amount of peroxide to be used in the polymerization grafting stages depends on the amount of monomer used and can be comprised from about 0.01 g to 0.1 g (counted as K2S2O8) per gram of the monomer. Equivalents of other peroxides are also usable. When using also an amine accelerator, for instance TEMED or equivalents of other amine acceLerators, quantities of the order of 0.01 to 1 g of TEMED per gram of peroxide (counted as K2S2O8) are advantageously usable. All the above reagent ratios and quantities are not critical and can fall short of or exceed the given limits in some cases, provided of course, that the amounts of respective reagents are enough for accomplishing the reactions and not in such excess as becoming non economical.
The aqueous suspension of grafted carbon black of this invention is directly usable for making jet-ink compositions. For this, it is sufficient to add to the suspension the suitable amounts of usual jet-ink additives, such as wetting agents, surfactants and viscosity controlling agents, dyes, mold inhibitors, oxygen absorbers, buffering agents, pH Controlling agents. In the present invention, a considerable and unexpected advantage is provided by the presence of the residual homopolymer which was formed during polymerizat ion and grafting. As surfactant products, non ionic compounds such as polyoxyethylene sorbitan ironolaurate and the like are preferred. As wetting agents, polyglyσols or glycolamines such as diethylene
glycol, glycerine, α -thiodiglyool, triethanolamine and N,N-dimetho xy-methyl-2-imidazolidone are suitable . The quantities of such additives will conform to usual practice.
As dyes, CI acid black Nos. 1, 24, 26, 48, 58, 60, 109, 119 and 131 can be used. As mold inhibitors, sodium dehydroacetate, 1,2-benz isothiazolin-3-one, 6-acetoxy-2,4-dimethyl-m-dioxane or formaldehy de can be used. As oxygen absorbers, sodium sulfite, sodium bisul fite can be used. As pH Controlling agents, HCl and NaOH can be used.
In addition to the aforementioned use in jet-printing inks, the aqueous dispersion of the invention can be used for many other purposes. Among such purposes, one may recite inks for fountainpen, ballpoint pen, feit pen, intaglio, rotogravure, rotary printing, elas tographic printing, typographic printing, rotary news-paper and the like . The following Examples illustrate the invention.
Exampia 1 (comparative)
Fourty three gram of carbon black (grade "Regal-R", quinone density 2 μ equi./g, CABOT Corp.) were agitated with 300 ml of water and 30 ml of ethanol. Then, 4.3 g of ammonium persulfate and 0.2 g of N-tetraethyl-ethylenediaraine (TEMED) were added and the mixture was stirred for 18 hrs at 90°C Then, 43.2 g of acrylic acid and 1 g of (NH4) 2S2O8 were added and the mixture was stirred under reflux at 95 - 98°C for 24 hrs. After cooling, there was obtained a well dispersed suspension of polyacrylic grafted carbon black the solid concentration of which was about 14% . The pH of this solution was about 2 and its viscosity about 45 cP. Dilution with about 200 ml of water provided carbon black dispersion of good opacity and much lower viscosity usable as a printing jet-ink. Upon neutralization with dilute NaOH solution, the viscosity increased.
Example 2
Fifteen gram of carbon black (grade "Regal R") in 50 ml of H2O were agitated for 4 hrs at 95ºC with 1.5 g of (NH4)2S2O8 and 0.1 ml of TEMED after which a solution of 22.5 g of acrylic acid in 41.6 ml
of 30% aqueous NaOH solution was added with 2 g of (NH4) 2S2O8 and 0.1 ml of TEMED. The mixture was further agitated for 24 hrs at 95°C. Then it was oooled and provided a dispersion (E) of about 20% solid grafted carbon black . The pH was 5.7 and the viscosity 7.1 cP. Lower visσosities with still accεptable opacity (blackness) were obtained by dilution to approximately 10 - 15% dispersed solids.
The experiment was repeated as described but using 0.3 ml of TRIS-TEMED (TRIS means tris-(hydroxymethyl) -aminomethans) instead of the TEMED in the peroxidation stage and no amine in the polymerization grafting stage. A dispersion (F) of coπparable solid concentration was obtained with viscosity 4.9 cP and pH 5.5. It however settled after 3 min sedimentation by centrifugation under 3300 rpm and was considered unacceptable.
Dispersions (G and H) of corresponding concentrations were made exactly as disclosed for dispersions E and F, respectively, but replacing the "Regal-R" carbon black by type "Elftex-5" (Furnace black) carbon black. Dispersion G had a pH of 5.7 and a viscosity in undiluted form of 12.1 cP; it did not settle after 30 min centrifugation. Dispersion H had a pH of 5.4 and a viscosity of 7.1 cP in undiluted form. It settled after 24 min centrifugation. There was no substantial precipitation after 1 year storage at rcom temperature.
Example 3
The experiment of Example 2 was repeated four times (samples I1 - 14) using 100 g of water, 15 g of carbon black ("Elftex-5") 1.5 g of K2S2O8, 0.3 ml of TEMED and a temperature of 95°C in the peroxidation stage, and 22.5 g of acrylic acid, 65 ml of 30% NaOH, 2 g of K2S2O8, 1 ml of TEMED, and 35 - 40 hrs boiling temperature (98°C) in the polymerization grafting stage. The variable was the peroxidation duration which was 1 hr (I1), 2 hrs (I2), 4 hrs (I3) and 6 hrs (I4) . Wo significant differences between the results were found, all dispersions having a pH of 5.8 - 6.0 and visσosities of about 15 - 17 cP in undiluted form. Much lower viscosities, with still ac ceptable opacities, were found with dispersions diluted down to about 5 - 10% grafted solids.
'
Example 4
The expariments of Example 2 were repeated under the following conditions:
Bsroxidation stage: water 100 ml; carbon black ("Elftex-5") 15 g;
K2S2O8 and TEMED variable according to Table I below; 2 hrs at 95°C.
Grafting and polymerization stage: sodium acrylate from 22.5 g acrylic acid neutralized with 65 ml 30% NaOH; K2S2O82 g; TEMED 1 ml;
24 hrs at 98°C Ebur samples (J1 to J4) were prepared according to the further data in Table I below and gave corresponding dispersions with viscosities also given in the Table.
Upon dilution with water to provide 5 - 10% solid low viscosity aqueous dispersions, the above samples still had acceptable opa cities and settling times.
Example 5
Experiments (K1 to K4) similar to those reported in Example 4 were performed under the following conditions, except for the K2S2O8
and TEMED used in the second stage which were as indicatsd in the next Table II.
Peroxidation stage: water 100 ml; carbon black ("Elftex-5") 15 g; K2S2O83 g; TEMED 0.3 ml; 2 hrs at 95°C
Grafting and polymerization stage: Na acrylate from 22.5 g of acrylic acid neutralized with 65 ml of 30% NaOH solution; K2S2O8 and TEMED see Table II; 48 hrs at 98°C. The remaining data and results are recorded in the next Table.
Upon centrifugation at 3300 rpm, the settling time for all samples was over 3.5 hrs.
Example 6
Experiments like in the previous Examples (samples L1 to L4) were carried out with variable amounts of acrylic monomer, K2S2O8 and TEMED in the polymerization grafting stage (see Table III below). Moreover, the following conditions were used:
Peroxidation stage: water 100 ml; carbon black ("Elftex-5") 15 g;
K2S2O83 g; TEMED 0.39; 2 hrs at 95°C.
Grafting & Polymerization stage: acrylic acid, K2S2O8 and TE MED according to Table below; 46 hrs at 98°C; neutralization NaOH
65 ml of aqueous solution containing required NaOH neutralizing equi valent. The sedimentation time after centrifugation at 3300 rpm is also shown in Table III.
The grafting level for samples L1 and L2 was considered border line to achieve optimal conditions of opacity and viscosities. (for opacity ireasurerrents, see for instance Example 9)
Example 7
The importance of using carbon black types with a high density of grafting sites was evidenced by repeating the experiments of the previous examples with other grades of carbon black, i.e. "Re gal-R" (2 μ equiv. of quinone sites/g) and "Vulcan 6" (70 μ equiv. of grafting sites/g) . Pertinent data on both the peroxidation and grafting stages are outlined below in Tables IV and V. In the Tables a previous sample (L3 from Example 6) is included for comparison. Except for the specific data reported in the Tables, the other conditions were as disclosed in Example 5.
The data of Table V show that using carbon black with high specific surfaces provides more favorable σombinations of high optical densiiy and low dispersion viscosity.
Example 8
A sample of grafted carbon black was prepared under the same conditions pertaining to sample L6 in Example 7 but varying the graft ing and polymerization duration. The. other general reaction Parameters are listed below:
Peroxidation stage: water 100 g; carbon black ("Elftex-5") 15 g; K2S2O83 g; TEMED 0.3 ml; 2 hrs at 95°c.
Grafting & Polymerization: acrylic acid 22.5 g; neutralization 30% NaOH 65 ml; K2S2O8 2 g; TEMED 1 ml; temperature 98°C; duration see below.
From the above data, it can be seen that accaptable viscosities (i.e. degree of grafting) are obtained after about 5 hrs reaction time. Reaction periods over about 60 - 70 hrs will unduly raise the viscosity without much improvement to the grafting yield.
Example 9
A sample of aqueous dispersion of grafted carbon black ("Elf tex-5) " similar to sample L3 (see Example 6) was diluted with water until its content in grafted carbon black was approximately 5 - 15% by weight. Then various preparations of such sample were mixed with usual jet-printing ink ingredients acoording to Table VI below. The visoosity, optical density and surface tension parameters were measured and are also gathered in Table VI. All Solutions passed quick ly through a 10 μ mesh filter and slowly (but still acceptably) through a 1 μ mesh filter. Optical densities above about 0.80 are σonsidered accaptable for a jet-print ink.
Opacities were measured as follows: about 0.5 to 1 g of the ink composition was placed on a piece of jet-print paper and spread to
a layer of 15 μ with a suitably calibrated doctor's blade. The film weis allowed to dry in air at room temperature for about 30 see and the opacity was measured according to usual Standards with a McBeth densitometer.
Claims
1. A stable aqueous dispersion or suspension of carbon black the particles of which are grafted with chanically bonded water soluble polyolefinic chain residues selected from alkali metal and ammonium polyacrylates the dispersed carbon black solid content of which is from about 1 to 15% by weight and the viscosity is from about 2 to 30 cP at room temperature.
2. The dispersion of Claim 1, in which the pH is 5 to 9.
3. The dispersion of claim 2 which has an optical density of 0.8 to 1.5 as measured on a dry film obtained from a 15μ wet film of dispersion with 5- 15% by weight of grafted carbon black.
4. The dispersion of Claim 2, wherein the quantity of water solubilizing grafted polymer or copolymer chain residues is from about 0.1 to 2 mg by square meter of the carbon black particles area.
5. The dispersion of Claim 2, wherein the average number of monomer units polymerized together in the grafted chain residues is fron about 20 to 200.
6. The dispersion of claim 2, having a filterability though a 10 /u mesh screen of 1-30 ml/min and though a 1 μ mesh screen of 0.1 - 10 ml/min.
7. The dispersion of claim 2, wherein the carbon black is selected from thermal black, lamp black, Channel black and furnace black.
8. The dispersion of claim 2, which contains in addition from 0.1 to 20% by weight of ungrafted homo- or copolymer the latter acting as a binder.
9. A method for the preparation of the suspension of claim 1, comprising (1) heating carbon black in water with a peroxide under agitation until the quinone and phenol radical quencher functions at the surface of the carbon particles have been inhibited and converted into grafting sites, then (2) adding at least one suitable radical polymerizable water solubilizing monomer, e.g. an alkali or ammonium metal acrylate or the like, and effecting a simultaneous polymerization and grafting of said monomer on the carbon black particles in the presence of a peroxide radical polymerization initiator.
10. The method of claim 9, wherein there is used, in addition to the peroxide, a radical polymerization amine accelerator.
11. The method of claim 10, wherein the amine accelerator is selected from N,N-tetraalkyl-ethylenediamine and higher analogs such as N,N' ,N' '-pentaalkyl-diethylenetriamine and the like.
12. The method of claim 9, wherein the peroxide is selected from ammonium and alkali metal persulfates, perborates, perphosphates, alkali metal peroxides and the like.
13. The method of claim 12, wherein the peroxide is (NH4) 2S2O8, K2S2O8 or Na2S2O8.
14. The method of claim 9 , wherein the weight ratio of peroxide to carbon black in the peroxidation stage (1) is about 0.1 to 0.5.
15. The method of claim 9 , wherein the average density of the grafting sites on the selected carbon black before peroxidation is from about 1 to 3000 μ equivalents per gram of particles.
16. The method of claim 15, wherein the weight ratio of polymerizable monomer to carbon black is approximately 0.5 to 30.
17. The method of claim 16, wherein the amount of peroxide in stage (2) is about 0.01 g to 0.1 g per gram of monomer.
18. The method of Claims 17 and 12, wherein the amount of amine initiator is about 0.01 to 1 g per gram of peroxide.
19. The method of claim 9, wherein the temperature of steps (1) and (2) is from about 50 to 100 °C under ordinary pressure.
20. The method of claim 9, wherein the duration of Step (2) is approximately 1 to 60 hrs.
21. The use of the dispersion of claim 1 for making jet-ink formulations, comprising usual jet-ink ingredients to said dispersion, said ingredients including wetting agents, surfactants and viscosity Controlling agents, dyes, mold Inhibitors, oxygen absorbers, pH Controlling agents.
22. The use of the dispersion of claim 8 for making jet-ink formulations, the residual ungrafted homopolymers present acting as an adhesive for the ink on the printed surface and as a σohesive agent for the carbon black particles.
Applications Claiming Priority (1)
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EP82810295A EP0098338B1 (de) | 1982-07-09 | 1982-07-09 | Stabile wässrige niederviskose Dispersion von gepfropftem Russ |
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WO1984000372A1 true WO1984000372A1 (en) | 1984-02-02 |
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Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1983/000175 WO1984000372A1 (en) | 1982-07-09 | 1983-07-06 | Low viscosity stable aqueous dispersion of graft carbon black |
Country Status (6)
Country | Link |
---|---|
US (1) | US4530961A (de) |
EP (1) | EP0098338B1 (de) |
JP (1) | JPS59501462A (de) |
AT (1) | ATE33660T1 (de) |
DE (1) | DE3278360D1 (de) |
WO (1) | WO1984000372A1 (de) |
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---|---|---|---|---|
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Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1537176A (fr) * | 1967-07-13 | 1968-08-23 | Centre Nat Rech Scient | Procédé de fabrication de polymères sous forme de perles contenant une dispersion de noir de carbone et nouveaux produits obtenus |
GB1191872A (en) * | 1966-08-18 | 1970-05-13 | Japan Gas Chemical Co | Process for Preparing a Carbon Black-Synthetic Resin Composition |
GB1421529A (en) * | 1971-09-29 | 1976-01-21 | Rothmans International Ltd | Polymers |
EP0018588A1 (de) * | 1979-04-30 | 1980-11-12 | BASF Aktiengesellschaft | Verfahren zur Herstellung von aliphatischen und cycloaliphatischen Di- und Polyurethanen |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3919150A (en) * | 1970-11-25 | 1975-11-11 | Owens Illinois Inc | Hydroxy functional acrylic ink |
US3903034A (en) * | 1970-12-07 | 1975-09-02 | Dick Co Ab | Offset jet printing ink |
US4018728A (en) * | 1972-02-23 | 1977-04-19 | Johnson Matthey & Co., Limited | Printing ink |
JPS535708B2 (de) * | 1972-02-24 | 1978-03-01 | ||
DE2917272A1 (de) * | 1979-04-27 | 1980-11-06 | Bayer Ag | Verfahren zur loesungsmittelfreien herstellung von hydrophilen fuellstoffpulvern |
JPS56147869A (en) * | 1980-04-17 | 1981-11-17 | Canon Inc | Recording solution |
DE3101892A1 (de) * | 1981-01-22 | 1982-08-26 | Röhm GmbH, 6100 Darmstadt | Verfahren zur herstellung von waessrigen kunststoffdispersionen mit hohem pigmentbindevermoegen |
-
1982
- 1982-07-09 EP EP82810295A patent/EP0098338B1/de not_active Expired
- 1982-07-09 DE DE8282810295T patent/DE3278360D1/de not_active Expired
- 1982-07-09 AT AT82810295T patent/ATE33660T1/de not_active IP Right Cessation
-
1983
- 1983-07-06 WO PCT/EP1983/000175 patent/WO1984000372A1/de unknown
- 1983-07-06 JP JP58502302A patent/JPS59501462A/ja active Granted
- 1983-07-06 US US06/598,351 patent/US4530961A/en not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1191872A (en) * | 1966-08-18 | 1970-05-13 | Japan Gas Chemical Co | Process for Preparing a Carbon Black-Synthetic Resin Composition |
FR1537176A (fr) * | 1967-07-13 | 1968-08-23 | Centre Nat Rech Scient | Procédé de fabrication de polymères sous forme de perles contenant une dispersion de noir de carbone et nouveaux produits obtenus |
GB1421529A (en) * | 1971-09-29 | 1976-01-21 | Rothmans International Ltd | Polymers |
EP0018588A1 (de) * | 1979-04-30 | 1980-11-12 | BASF Aktiengesellschaft | Verfahren zur Herstellung von aliphatischen und cycloaliphatischen Di- und Polyurethanen |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5952429A (en) * | 1995-06-14 | 1999-09-14 | Nippon Shokubai Co., Ltd. | Carbon black graft polymer, method for production thereof, and use thereof |
Also Published As
Publication number | Publication date |
---|---|
EP0098338B1 (de) | 1988-04-20 |
JPS59501462A (ja) | 1984-08-16 |
JPH0149369B2 (de) | 1989-10-24 |
DE3278360D1 (en) | 1988-05-26 |
ATE33660T1 (de) | 1988-05-15 |
EP0098338A1 (de) | 1984-01-18 |
US4530961A (en) | 1985-07-23 |
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