US3554862A - Method for producing a fiber pulp sheet by impregnation with a long chain cationic debonding agent - Google Patents

Method for producing a fiber pulp sheet by impregnation with a long chain cationic debonding agent Download PDF

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US3554862A
US3554862A US739641A US3554862DA US3554862A US 3554862 A US3554862 A US 3554862A US 739641 A US739641 A US 739641A US 3554862D A US3554862D A US 3554862DA US 3554862 A US3554862 A US 3554862A
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pulp
sheet
long chain
producing
pulp sheet
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US739641A
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Laurence R B Hervey
Donald K George
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Georgia Pacific LLC
Riegel Textile Corp
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Riegel Textile Corp
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Assigned to GEORGIA PACIFIC CORPORATION, 133 PEACHTREE STREET, N.E., ATLANTA, GA. 30303, A CORP. OF reassignment GEORGIA PACIFIC CORPORATION, 133 PEACHTREE STREET, N.E., ATLANTA, GA. 30303, A CORP. OF ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: RIEGELTEXTILE CORPORATION, A CORP. OF DE.
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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
    • A61F13/47—Sanitary towels, incontinence pads or napkins
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/425—Cellulose series
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
    • D21C9/001—Modification of pulp properties
    • D21C9/002—Modification of pulp properties by chemical means; preparation of dewatered pulp, e.g. in sheet or bulk form, containing special additives
    • D21C9/005—Modification of pulp properties by chemical means; preparation of dewatered pulp, e.g. in sheet or bulk form, containing special additives organic compounds
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/03—Non-macromolecular organic compounds
    • D21H17/05—Non-macromolecular organic compounds containing elements other than carbon and hydrogen only
    • D21H17/07—Nitrogen-containing compounds
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
    • A61F13/534—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
    • A61F13/534—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad
    • A61F13/53409—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad having a folded core
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
    • A61F2013/530131—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium being made in fibre but being not pulp

Definitions

  • a method of producing from cellulose fiber pulp, a pulp sheet the improvement of impregnating the pulp with about 0.1% to 5.0% based on the weight of the dry pulp, of a cationic long chain fatty alkyl compound debonding agent having at least 12 carbon atoms in at least one alkyl chain such as dihydrogenated dimethyl ammonium chloride derived from a tallow oil, and forming a sheet from the impregnated pulp that can be easily mechanically fiberized.
  • a cationic long chain fatty alkyl compound debonding agent having at least 12 carbon atoms in at least one alkyl chain such as dihydrogenated dimethyl ammonium chloride derived from a tallow oil
  • an otherwise conventional pulp sheet or board formed on a conventional paper machine of the cylinder or Fourdrinier type andwhich is normally diflicult to fiberize may be rendered exceedingly easy to fiberize (by mechanical action) if the pulp sheet or furnish for same is impregnated with certain types of chemical compounds, discussed below.
  • these particular types of chemicals are unusually and markedly effective in debonding the pulp or pulp sheets treated therewith such that when the pulp sheet is dried and subjected to mechanical abrasive action, the fibers composing the sheet will substantially completely separate and produce a very fluffy, fibrous material.
  • the loftiness of this material is 33 /a% or higher than the same type of material which has not been chemically treated before being subjected to the fiberizing operation.
  • the selected highly effective chemicals function to eliminate or break down the usual bond that exists between the fibers and thereby act as a debonding agent.
  • the evidence of this debonding elfect is shown by the tensile strength of the treated pulp sheet which is only about one-third to one-fourth of the tensile strength of the same sheet untreated.
  • the treated sheet may typically have a tensile strength of about 2 pounds per inch for a sheet having a basis weight of 80 pounds per 3000 square feet in contrast with the untreated sheet which will typically have a tensile strength of 6 to 8 pounds per square inch.
  • the chemicals which we have found effective for obtaining this markedly lower tensile strength of the pulp sheet, comparable ease of debonding by mechanical action and comparable increase in loftiness of the fiberized material, may be generically classified as cationic long chain fatty alkyl compounds having at least 12 car 'bon atoms at least one alkyl chain.
  • One of the important characteristics of these compounds is their cationic nature which attracts them chemically to the anionic fibers. It also appears that the highly eflicient debonding action of these chemicals is allied with long chain fatty type chemical compounds. Also, from the standpoint of eifective debonding, it is important that these chemical compounds have at least 12 carbon atoms in the alkyl 3,554,862 Patented Jan. 12, 1971 chain or in at least one of the alkyl chains if a dialkyl type compound is used.
  • the effective chemicals may also be classified subgenerically into the following groups, quaternary compounds tertiary, secondary and primary amine salts, Some of the quaternary compounds have been found more advantageous than some of the amines from the standpoint of lowering the tensile strength of the sheet from the usual 6, 7' or 8 pounds per inch down to 2 or 3 pounds per inch. However, a number of the primary amines of the long chain type having about 16, 18 or more carbon atoms have proven very effective for debonding purposes.
  • the chemicals may be added to the pulp slurry contained in a stock chest prior to the paper or paperboard machine and this is of advantage where it is desired to permit the chemical to remain in contact with the cellulose fibers for some period of time, e.g., 5-10 minutes, before the slurry is fed to the paper machine.
  • the chemical may be added at the head box of the paper machine.
  • the chemicals may be introduced into the sheet at the wet press section of the paper machine by suitable conventional equipment, such as a size press or the like. At this point, the chemical will be introduced into the previously-formed pulp sheet or board while it is still relatively wet, and before the sheet or board is finally dried on the machine.
  • a suitable type of Fourdrinier paper machine and the process of forming paper thereon is disclosed in G. L. Bedwell Pat. No. 2,488,700, issued Nov. 22, 1949; and a suitable type of cylinder machine is disclosed in Jacob Edge Pat. No. 2,005,839, issued June 25, 1935. And reference may be had to those patents for disclosures of paper machines and processes of operation suitable for use in the present invention.
  • the amount of chemical or chemicals to be added to the pulp furnish, slurry, or pulp sheet may vary substantially with the type of pulp used and the desired extent of debonding property. Usually, the amount will range between 0.1% to 5.0% by weight based on the dry pulp and in most cases, the chemicals are highly effective at the lower end of this range in amounts less than 1.0%.
  • the present invention is applicable to practically all conventional types of pulps made in conventional manner by the well-known kraft, soda, sulfite, or neutral sulfite processes.
  • the raw material that is, the fibers to be pulped, impregnated and sheeted in accordance with the present invention, may be any one or more of the various types of pulp materials commercially used in paper and paperboard manufacture.
  • Illustrative examples are wood, cotton linters, flax, hemp, ramie, bagasse, and esparto fiber pulps.
  • the formed and impregnated wet sheet is then passed over conventional drying cylinders normally used in a paper machine to provide a fairly dense substantially dried, e.g., moisture of about 5%l0% by weight, sheet which may typically have a thickness of about /m-A? of an inch, and the dried sheet wound in a conventional manner on rolls for storage or shipment and ultimately for fiberizing by mechanical action to produce the abovedescribed lofty fluffy fiberized material.
  • the final fiulfy material may be used for any desired purposes such as, for example, in diapers, napkins or other sanitary products, or for bulking or padding purposes, particularly where a lofty material is needed.
  • the lofty fiberized properties of this material are also of advantage from the standpoint of efiiciency of absorption of body fluids.
  • a pulp sheet for fiberizing by mechanical action to form a fiuffy material the improvement of impregnating the pulp with less than 1.0% based on the weight of the dry pulp, of a cationic long chain fatty alkyl compound debonding agent having at least 12 carbon atoms in at least one alkyl chain, and forming a sheet from the impregnated pulp that can be easily mechanically fiberized.
  • a pulp sheet for fiberizing by mechanical action to form a fiuffy material comprising: the improvement of impregnating the pulp with less than 1.0% based on the weight of the dry pulp, of a cationic long chain fatty alkyl compound debonding agent having at least 12 carbon atoms in at least one alkyl chain, and selected from the class of chemicals consisting of quaternary compounds, tertiary, secondary and primary amine salts, and forming a sheet from the impregnated pulp that can be easily mechanically fiberized.

Abstract

IN A METHOD OF PRODUCING FROM CELLULOSE FIBER PULP, A PULP SHEET, THE IMPROVEMENT OF IMPREGNATING THE PULP WITH ABOUT 0.1% TO 5.0% BASED ON THE WEIGHT OF THE DRY PULP, OF A CATIONIC LONG CHAIN FATTY ALKYL COMPOUND DEBONDING AGENT HAVING AT LEAST 12 CARBON ATOMS IN AT LEAST ONE ALKYL CHAIN SUCH AS DIHYDROGENATED DIMETHYL AMMONIUM CHLORIDE DERIVED FROM A TALLOW OIL, AND FORMING A SHEET FROM THE IMPREGNATED PULP THAT CAN BE EASILY MECHANICALLY FIBERIZED.

Description

United States Patent-O 3,554,862 METHOD FOR PRODUCING A FIBER PULP SHEET BY HVIPREGNATION WITH A LONG CHAIN CATIONIC DEBONDING AGENT Laurence R. B. Hervey, West Concord, Mass., and Donald K. George, Greenwood, S.C., assignors, by direct and mesne assignments, to Riegel Textile Corporation, Ware Shoals, S.C., a corporation of Delaware No Drawing. Filed June 25, 1968, Ser. No. 739,641 The portion of the term of the patent subsequent to Aug. 6, 1985, has been disclaimed Int. Cl. D21d 3/00 US. Cl. 162158 2 Claims ABSTRACT OF THE DISCLOSURE In a method of producing from cellulose fiber pulp, a pulp sheet, the improvement of impregnating the pulp with about 0.1% to 5.0% based on the weight of the dry pulp, of a cationic long chain fatty alkyl compound debonding agent having at least 12 carbon atoms in at least one alkyl chain such as dihydrogenated dimethyl ammonium chloride derived from a tallow oil, and forming a sheet from the impregnated pulp that can be easily mechanically fiberized.
In accordance with this invention, it has been discovered that an otherwise conventional pulp sheet or board formed on a conventional paper machine of the cylinder or Fourdrinier type andwhich is normally diflicult to fiberize, may be rendered exceedingly easy to fiberize (by mechanical action) if the pulp sheet or furnish for same is impregnated with certain types of chemical compounds, discussed below. We have found that these particular types of chemicals are unusually and markedly effective in debonding the pulp or pulp sheets treated therewith such that when the pulp sheet is dried and subjected to mechanical abrasive action, the fibers composing the sheet will substantially completely separate and produce a very fluffy, fibrous material. The loftiness of this material is 33 /a% or higher than the same type of material which has not been chemically treated before being subjected to the fiberizing operation.
It appears that the selected highly effective chemicals function to eliminate or break down the usual bond that exists between the fibers and thereby act as a debonding agent. The evidence of this debonding elfect is shown by the tensile strength of the treated pulp sheet which is only about one-third to one-fourth of the tensile strength of the same sheet untreated. For example, the treated sheet may typically have a tensile strength of about 2 pounds per inch for a sheet having a basis weight of 80 pounds per 3000 square feet in contrast with the untreated sheet which will typically have a tensile strength of 6 to 8 pounds per square inch.
The chemicals which we have found effective for obtaining this markedly lower tensile strength of the pulp sheet, comparable ease of debonding by mechanical action and comparable increase in loftiness of the fiberized material, may be generically classified as cationic long chain fatty alkyl compounds having at least 12 car 'bon atoms at least one alkyl chain. One of the important characteristics of these compounds is their cationic nature which attracts them chemically to the anionic fibers. It also appears that the highly eflicient debonding action of these chemicals is allied with long chain fatty type chemical compounds. Also, from the standpoint of eifective debonding, it is important that these chemical compounds have at least 12 carbon atoms in the alkyl 3,554,862 Patented Jan. 12, 1971 chain or in at least one of the alkyl chains if a dialkyl type compound is used.
The effective chemicals may also be classified subgenerically into the following groups, quaternary compounds tertiary, secondary and primary amine salts, Some of the quaternary compounds have been found more advantageous than some of the amines from the standpoint of lowering the tensile strength of the sheet from the usual 6, 7' or 8 pounds per inch down to 2 or 3 pounds per inch. However, a number of the primary amines of the long chain type having about 16, 18 or more carbon atoms have proven very effective for debonding purposes.
Illustrative but nonlimiting examples of the chemicals in the above mentioned four categories are as follows:
Quaternarymono cottonseed oil trimethyl ammonium chloride mono coco trimethyl ammonoium chloride mono stearyl trimethyl ammonium chloride mono oleyl trimethyl ammonium chloride mono soya trimethyl ammonium chloride dilauryl dimethyl ammonium chloride di hydrogenated dimethyl ammonium chloride derived from a tallow oil dimethyl ammonium chloride derived from soya oil N-alkyl (C dimethyl benzyl ammonium chloride coco dimethyl benzyl ammonium chloride Tertiary-mono stearyl dimethyl amine chloride Secondarydi coco amine chloride di hydrogenated tallow amine chloride di oleyl amine chloride Primarydodecylamine chloride palmitylamine chloride coco amine chloride coco amine acetate stearyl amine chloride stearyl amine acetate oleyl amine chloride oleyl amine acetate soya amine chloride tallow amine chloride Any one or more of the selected chemicals above identified may be introduced into the pulp or pulp sheet at a number of different places or steps in commercial pulp sheet forming operations. For example, the chemicals may be added to the pulp slurry contained in a stock chest prior to the paper or paperboard machine and this is of advantage where it is desired to permit the chemical to remain in contact with the cellulose fibers for some period of time, e.g., 5-10 minutes, before the slurry is fed to the paper machine. Where prolonged contact with the slurry prior to sheet formation is not necessary or desired, the chemical may be added at the head box of the paper machine.
Depending upon the type of paper or board making machinery used, the desired speed of operation, and the desired degree of impregnation of the fibers with the chemicals, the chemicals may be introduced into the sheet at the wet press section of the paper machine by suitable conventional equipment, such as a size press or the like. At this point, the chemical will be introduced into the previously-formed pulp sheet or board while it is still relatively wet, and before the sheet or board is finally dried on the machine.
A suitable type of Fourdrinier paper machine and the process of forming paper thereon is disclosed in G. L. Bedwell Pat. No. 2,488,700, issued Nov. 22, 1949; and a suitable type of cylinder machine is disclosed in Jacob Edge Pat. No. 2,005,839, issued June 25, 1935. And reference may be had to those patents for disclosures of paper machines and processes of operation suitable for use in the present invention.
The amount of chemical or chemicals to be added to the pulp furnish, slurry, or pulp sheet may vary substantially with the type of pulp used and the desired extent of debonding property. Usually, the amount will range between 0.1% to 5.0% by weight based on the dry pulp and in most cases, the chemicals are highly effective at the lower end of this range in amounts less than 1.0%.
The present invention is applicable to practically all conventional types of pulps made in conventional manner by the well-known kraft, soda, sulfite, or neutral sulfite processes.
The raw material, that is, the fibers to be pulped, impregnated and sheeted in accordance with the present invention, may be any one or more of the various types of pulp materials commercially used in paper and paperboard manufacture. Illustrative examples are wood, cotton linters, flax, hemp, ramie, bagasse, and esparto fiber pulps. Generally speaking, it is desirable to use relatively long fiber material for ultimate individual fiber strength and for high resistance to breaking, powdering or dusting when subjected to the fiberizing treatment.
After incorporation of the chemicals in the pulp sheet or board at any of the desired points mentioned above, the formed and impregnated wet sheet is then passed over conventional drying cylinders normally used in a paper machine to provide a fairly dense substantially dried, e.g., moisture of about 5%l0% by weight, sheet which may typically have a thickness of about /m-A? of an inch, and the dried sheet wound in a conventional manner on rolls for storage or shipment and ultimately for fiberizing by mechanical action to produce the abovedescribed lofty fluffy fiberized material. The final fiulfy material may be used for any desired purposes such as, for example, in diapers, napkins or other sanitary products, or for bulking or padding purposes, particularly where a lofty material is needed. The lofty fiberized properties of this material are also of advantage from the standpoint of efiiciency of absorption of body fluids.
Various modifications may be made in the abovedescribed materials, chemicals, process conditions, etc., without departing from the scope of this invention as set forth in the appended claims.
We claim:
1. In a method of producing from cellulose fiber pulp. a pulp sheet for fiberizing by mechanical action to form a fiuffy material; the improvement of impregnating the pulp with less than 1.0% based on the weight of the dry pulp, of a cationic long chain fatty alkyl compound debonding agent having at least 12 carbon atoms in at least one alkyl chain, and forming a sheet from the impregnated pulp that can be easily mechanically fiberized.
2. In a method of producing from cellulose fiber pulp, a pulp sheet for fiberizing by mechanical action to form a fiuffy material; the improvement of impregnating the pulp with less than 1.0% based on the weight of the dry pulp, of a cationic long chain fatty alkyl compound debonding agent having at least 12 carbon atoms in at least one alkyl chain, and selected from the class of chemicals consisting of quaternary compounds, tertiary, secondary and primary amine salts, and forming a sheet from the impregnated pulp that can be easily mechanically fiberized.
References Cited UNITED STATES PATENTS 7/1954 Reynolds 162-158 8/1968 Hervey 162179 S. LEON BASHORE, Primary Examiner R. H. ANDERSON, Assistant Examiner
US739641A 1968-06-25 1968-06-25 Method for producing a fiber pulp sheet by impregnation with a long chain cationic debonding agent Expired - Lifetime US3554862A (en)

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US73964168A 1968-06-25 1968-06-25
US79688069A 1969-02-05 1969-02-05

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US796880A Expired - Lifetime US3554863A (en) 1968-06-25 1969-02-05 Cellulose fiber pulp sheet impregnated with a long chain cationic debonding agent

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BE (1) BE719028A (en)
CH (1) CH489664A (en)
DE (1) DE6925092U (en)
FR (1) FR95524E (en)
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Cited By (99)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3930933A (en) * 1970-11-25 1976-01-06 Riegel Textile Corporation Debonded cellulose fiber pulp sheet and method for producing same
US4144122A (en) * 1976-10-22 1979-03-13 Berol Kemi Ab Quaternary ammonium compounds and treatment of cellulose pulp and paper therewith
US4259958A (en) * 1979-06-06 1981-04-07 Riegel Textile Corporation Multi-layer absorbent pad for disposable absorbent articles and process for producing same
US4377543A (en) * 1981-10-13 1983-03-22 Kimberly-Clark Corporation Strength and softness control of dry formed sheets
US4425186A (en) 1981-03-24 1984-01-10 Buckman Laboratories, Inc. Dimethylamide and cationic surfactant debonding compositions and the use thereof in the production of fluff pulp
US4441962A (en) * 1980-10-15 1984-04-10 The Procter & Gamble Company Soft, absorbent tissue paper
US4452934A (en) * 1981-09-28 1984-06-05 Georgia-Pacific Corporation Aminoplast resin compositions
AU646255B2 (en) * 1990-05-25 1994-02-17 Johnson & Johnson Inc. Absorbent perf-embossed debonded pulp board
US5292363A (en) * 1991-08-21 1994-03-08 Sequa Chemicals, Inc. Papermarking composition, process using same, and paper produced therefrom
US5296024A (en) * 1991-08-21 1994-03-22 Sequa Chemicals, Inc. Papermaking compositions, process using same, and paper produced therefrom
US5324391A (en) * 1990-10-31 1994-06-28 Weyerhaeuser Company Method for crosslinking cellulose fibers
US5334286A (en) * 1993-05-13 1994-08-02 The Procter & Gamble Company Tissue paper treated with tri-component biodegradable softener composition
US5385642A (en) * 1993-05-13 1995-01-31 The Procter & Gamble Company Process for treating tissue paper with tri-component biodegradable softener composition
US5399240A (en) * 1987-01-20 1995-03-21 Weyerhaeuser Company Crosslinked cellulose products and method for their preparation
US5415737A (en) * 1994-09-20 1995-05-16 The Procter & Gamble Company Paper products containing a biodegradable vegetable oil based chemical softening composition
US5437418A (en) * 1987-01-20 1995-08-01 Weyerhaeuser Company Apparatus for crosslinking individualized cellulose fibers
WO1995025201A1 (en) * 1994-03-15 1995-09-21 Sequa Chemicals, Inc. Paper opacifier
WO1995034716A1 (en) * 1994-06-15 1995-12-21 Eka Chemicals Ab Method for producing cellulose pulp and use of a compound in the method
US5494731A (en) * 1992-08-27 1996-02-27 The Procter & Gamble Company Tissue paper treated with nonionic softeners that are biodegradable
US5510000A (en) * 1994-09-20 1996-04-23 The Procter & Gamble Company Paper products containing a vegetable oil based chemical softening composition
EP0718436A2 (en) * 1991-11-01 1996-06-26 The Procter & Gamble Company Soft absorbent tissue paper comprising a biodegadable quaternized di-methylated amine-ester compound and a permanent wet strength resin
US5556976A (en) * 1987-01-20 1996-09-17 Jewell; Richard A. Reactive cyclic N-sulfatoimides and cellulose crosslinked with the imides
US5749863A (en) * 1994-03-18 1998-05-12 The Procter & Gamble Company Fluid acquisition and distribution member for absorbent core
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LU56645A1 (en) 1969-06-10
CH489664A (en) 1970-04-30
FR95524E (en) 1971-01-22

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