GB1098023A - Process of strengthening paper - Google Patents

Process of strengthening paper

Info

Publication number
GB1098023A
GB1098023A GB279165A GB279165A GB1098023A GB 1098023 A GB1098023 A GB 1098023A GB 279165 A GB279165 A GB 279165A GB 279165 A GB279165 A GB 279165A GB 1098023 A GB1098023 A GB 1098023A
Authority
GB
United Kingdom
Prior art keywords
acid
epichlorohydrin
size
synthetic resin
aluminium
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB279165A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wyeth Holdings LLC
Original Assignee
American Cyanamid Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by American Cyanamid Co filed Critical American Cyanamid Co
Publication of GB1098023A publication Critical patent/GB1098023A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
    • D21H21/18—Reinforcing agents
    • 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
    • D21H17/20—Macromolecular organic compounds
    • D21H17/33—Synthetic macromolecular compounds
    • D21H17/34—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H17/37—Polymers of unsaturated acids or derivatives thereof, e.g. polyacrylates
    • D21H17/375—Poly(meth)acrylamide
    • 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
    • D21H17/20—Macromolecular organic compounds
    • D21H17/33—Synthetic macromolecular compounds
    • D21H17/46—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H17/54—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen
    • D21H17/55—Polyamides; Polyaminoamides; Polyester-amides
    • 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
    • D21H17/63—Inorganic compounds
    • D21H17/66—Salts, e.g. alums
    • 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
    • D21H23/00—Processes or apparatus for adding material to the pulp or to the paper

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Paper (AREA)

Abstract

Paper of high dry strength but low wet strength comprises water-laid cellulose fibres bonded together by a complex of a synthetic dry-strength polymer anionic by virtue of a content of acrylic, methacrylic or itaconic acid residues, a salt of tervalent aluminium and a non-thermo-setting cationic synthetic resin that cannot impart wet-strength. The anionic polymer is water-soluble or water-dispersible and may be fixed on the fibres by the action of the aluminium salt and the cationic synthetic resin in aqueous suspension, which is thereafter sheeted and dried. The three agents may be added to the suspension in any sequence, or the cationic synthetic resin and aluminium salt can be added together. The anionic polymer may be a copolymer of acrylamide, methacrylamide, acrylonitrile, methacrylonitrile, an alkyl acrylate, an alkyl methacrylate or an alkyl vinyl ether with acrylic or methacrylic acid, or a condensate of a lower alkylene oxide with a polymer of acrylic acid, methacrylic acid or itaconic acid or with a copolymer of one of these acids or its salt with an ester of acrylic, methacrylic, itaconic, maleic, fumaric or citraconic acid and an alcohol such as methyl, butyl, octyl, dodecyl or cyclohexyl alcohol or a vinyl or vinyloxyalkyl ester of acetic or propionic acid, ethyl or butyl vinyl ether, acrylamide or methacrylamide. The aluminium salt may be alum, aluminium chloride or aluminium nitrate. The cationic synthetic resin may be polyethylenimine polyvinylamine; or condensation products of adipic acid, tetraethylene-pentamine and epichlorohydrin; methylamine, ethylendiamine and epichlorohydrin; methylamine, ammonia and epichlorohydrin; ethylene dichloride and 3, 3\sv-iminobispropylamine; adipic acid and tetraethylenpentamine; diethylenetriamine and ethylene dichloride; ethylene diamine and epichlorohydrin; or ammonia and epichlorohydrin; or a quaternized polyacrylamide or a Hoffman degradation product of a polyacrylamide or an acrylamide-vinylpyridine copolymer. The anionic polymer may be fixed at a neutral or alkaline pH, e.g. 6-8. A size may be added with the anionic polymer and fixed by the aluminium salt. This size may be a rosin size, wax size, stearic anhydride, octadecyl keten dimer or octadecyl isocyanate. Alternatively, a cationic emulsion of a hydrophobic organic cellulose-reactive size, e.g. that prepared by reacting triethylene-tetramine with stearic acid and solubilizing with acetic acid, or a higher aliphatic amine-epichlorohydrin size, may be added with the cationic synthetic resin.
GB279165A 1964-05-07 1965-01-21 Process of strengthening paper Expired GB1098023A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US36844464A 1964-05-07 1964-05-07

Publications (1)

Publication Number Publication Date
GB1098023A true GB1098023A (en) 1968-01-03

Family

ID=23451229

Family Applications (1)

Application Number Title Priority Date Filing Date
GB279165A Expired GB1098023A (en) 1964-05-07 1965-01-21 Process of strengthening paper

Country Status (2)

Country Link
GB (1) GB1098023A (en)
NL (1) NL6514235A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997013033A1 (en) * 1995-10-05 1997-04-10 Basf Aktiengesellschaft Process for producing paper with a dry-strength and wet-strength finish
FR3061212A1 (en) * 2016-12-27 2018-06-29 Arjowiggins Security FIBROUS CELLULOSIC SUBSTRATE RESISTANT TO FALSIFICATION BY CLEAVAGE.

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997013033A1 (en) * 1995-10-05 1997-04-10 Basf Aktiengesellschaft Process for producing paper with a dry-strength and wet-strength finish
FR3061212A1 (en) * 2016-12-27 2018-06-29 Arjowiggins Security FIBROUS CELLULOSIC SUBSTRATE RESISTANT TO FALSIFICATION BY CLEAVAGE.
WO2018122054A1 (en) 2016-12-27 2018-07-05 Arjowiggins Security Cellulosic fibrous substrate that is resistant to forgery by delamination

Also Published As

Publication number Publication date
NL6514235A (en) 1967-05-05

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