SE8200472L - PROCEDURE FOR IMPROVING THE WATERPROOF POSITION OF PAPER - Google Patents

PROCEDURE FOR IMPROVING THE WATERPROOF POSITION OF PAPER

Info

Publication number
SE8200472L
SE8200472L SE8200472A SE8200472A SE8200472L SE 8200472 L SE8200472 L SE 8200472L SE 8200472 A SE8200472 A SE 8200472A SE 8200472 A SE8200472 A SE 8200472A SE 8200472 L SE8200472 L SE 8200472L
Authority
SE
Sweden
Prior art keywords
paper
improving
procedure
amine salt
waterproof position
Prior art date
Application number
SE8200472A
Other languages
Swedish (sv)
Inventor
P A Longo
I E Isgur
Original Assignee
Grace W R & 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 Grace W R & Co filed Critical Grace W R & Co
Publication of SE8200472L publication Critical patent/SE8200472L/en

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
    • 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
    • D21H17/57—Polyureas; Polyurethanes
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/08—Processes
    • C08G18/0804—Manufacture of polymers containing ionic or ionogenic groups
    • C08G18/0809—Manufacture of polymers containing ionic or ionogenic groups containing cationic or cationogenic groups
    • C08G18/0814—Manufacture of polymers containing ionic or ionogenic groups containing cationic or cationogenic groups containing ammonium groups or groups forming them
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/08—Processes
    • C08G18/10—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
    • C08G18/12—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step using two or more compounds having active hydrogen in the first polymerisation step

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Polyurethanes Or Polyureas (AREA)
  • Paper (AREA)

Abstract

The wet tensile strength of paper is improved by treating paper pulp with pH-adjusted polyurethane prepolymer amine salt and then producing paper from the treated pulp. The polyurethane prepolymer amine salt has an unadjusted pH of about 3.5-5.5. After adjustment, the pH of the amine salt can range from 6.0 to 9.0.
SE8200472A 1981-02-23 1982-01-28 PROCEDURE FOR IMPROVING THE WATERPROOF POSITION OF PAPER SE8200472L (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US23732481A 1981-02-23 1981-02-23

Publications (1)

Publication Number Publication Date
SE8200472L true SE8200472L (en) 1982-08-24

Family

ID=22893258

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8200472A SE8200472L (en) 1981-02-23 1982-01-28 PROCEDURE FOR IMPROVING THE WATERPROOF POSITION OF PAPER

Country Status (8)

Country Link
CA (1) CA1187659A (en)
DE (1) DE3205966A1 (en)
ES (1) ES8307841A1 (en)
FI (1) FI820446L (en)
FR (1) FR2500499A1 (en)
GB (1) GB2093491A (en)
IT (1) IT1147614B (en)
SE (1) SE8200472L (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2353005A1 (en) 2000-08-01 2002-02-01 Dai-Ichi Kogyo Seiyaku Co., Ltd. Blocked urethane prepolymers as paper wet strength agent
JP2003138497A (en) * 2001-10-31 2003-05-14 Dai Ichi Kogyo Seiyaku Co Ltd Wet strength agent
CN110982029B (en) * 2019-11-21 2022-04-22 万华化学集团股份有限公司 Waterborne polyurethane resin emulsion for waterborne space leather base and preparation method thereof, waterborne space leather base and preparation method thereof

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2400490C2 (en) * 1974-01-05 1982-06-03 Akzo Gmbh, 5600 Wuppertal Cationic polyurethanes and processes for their manufacture
DE2537653B2 (en) * 1975-08-23 1977-10-27 Bayer Ag, 5090 Leverkusen PAPER SIZING AGENTS AND PROCESS FOR PAPER SIZING
DE3015143A1 (en) * 1979-04-30 1980-11-06 Grace W R & Co POLYURETHANE POLYMERS IN AQUEOUS MEDIUM AND METHOD FOR THE PRODUCTION THEREOF
DE3102038A1 (en) * 1980-01-28 1981-12-10 W.R. Grace & Co., 02140 Cambridge, Mass. POLYURETHANE POLYMER AMINE SALT AS A PAPER ADDITIVE

Also Published As

Publication number Publication date
FR2500499A1 (en) 1982-08-27
CA1187659A (en) 1985-05-28
FI820446A7 (en) 1982-08-24
ES509801A0 (en) 1983-08-01
GB2093491A (en) 1982-09-02
IT8247794A0 (en) 1982-02-15
ES8307841A1 (en) 1983-08-01
IT1147614B (en) 1986-11-19
DE3205966A1 (en) 1982-09-09
FI820446L (en) 1982-08-24

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