GB980875A - Improvements in or relating to organopolysiloxane compositions for the treatment of paper - Google Patents

Improvements in or relating to organopolysiloxane compositions for the treatment of paper

Info

Publication number
GB980875A
GB980875A GB4038562A GB4038562A GB980875A GB 980875 A GB980875 A GB 980875A GB 4038562 A GB4038562 A GB 4038562A GB 4038562 A GB4038562 A GB 4038562A GB 980875 A GB980875 A GB 980875A
Authority
GB
United Kingdom
Prior art keywords
weight
stannous octoate
xylene
paper
siloxane
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
GB4038562A
Inventor
Thomas Richard Williams
Brian Charles Yarwood
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.)
Midland Silicones Ltd
Original Assignee
Midland Silicones Ltd
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 Midland Silicones Ltd filed Critical Midland Silicones Ltd
Priority to GB4038562A priority Critical patent/GB980875A/en
Publication of GB980875A publication Critical patent/GB980875A/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
    • D21H19/00—Coated paper; Coating material
    • D21H19/10—Coatings without pigments
    • D21H19/14—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12
    • D21H19/24—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12 comprising macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H19/32—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12 comprising macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds obtained by reactions forming a linkage containing silicon in the main chain of the macromolecule
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
    • C08L83/04—Polysiloxanes
    • 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
    • C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
    • C08G77/04—Polysiloxanes
    • C08G77/14—Polysiloxanes containing silicon bound to oxygen-containing groups
    • C08G77/16—Polysiloxanes containing silicon bound to oxygen-containing groups to hydroxyl groups

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Paper (AREA)
  • Paints Or Removers (AREA)

Abstract

A composition comprising (1) from 0.01 to less than 5% by weight of a siloxane having at least 3 units per molecule of formula RHSiO and any remaining units of formula R3SiO 1/2 in which R is a monovalent hydrocarbon radical containing less than 7 carbon atoms, (2) from more than 95% to 99.99% by weight of an organopolysiloxane having a viscosity of at least 100 cps. at 25 DEG C. and in which substantially all of the molecules contain at least two silicon bonded hydroxyl groups, there being 1.9 to 2 organic radicals (saturated, unsaturated or halogenated) per silicon atom, (3) stannous octoate and (4) an organic solvent for (1), (2) and (3). The stannous octoate may be present in amount 0.1 to 2.0% by weight The hydroxylated silicones are preferably linear polymers containing monovalent hydrocarbon or halogenated hydrocarbon radicals, e.g. chloromethyl, chlorophenyl or trifluoropropyl radicals. Solvents specified are toluene, xylene, benzene and perchloroethylene. In the example trimethylsiloxy end blocked methylhydrogen polysiloxane and dimethylpolysiloxane were dissolved in xylene and stannous octoate added. The compositions may be used for coating paper. Specifications 804,198 and 804,199 are referred to.ALSO:Paper, e.g. kraft, glassine, parchment, paperboard and chip board is coated with a composition comprising: (1) from 0,01 to less than 5% by weight of a siloxane having at least 3 units per molecule of formula RHSiO and any remaining units of formula R3SiO 1/2 in which R is a monovalent hydrocarbon radical containing less than 7 carbon atoms, (2) from more than 95% to 99,99% by weight of an organo polysiloxane having a viscosity of at least 100 cS at 25 DEG C. and in which substantially all the molecules contain at least two silicon bonded hydroxyl groups, these being 1,9-2 organic radicals per silicon atom, (3) stannous octoate, and (4) an organic solvent for (1), (2) and (3). Solvents specified are: xylene, toluene, benzene and perchloroethylene. Coating may be by brushing, spraying, immersion or knife roller coating. In an example glassine kraft paper was treated on both surfaces with a solution of trimethylsiloxy end-blocked methyl hydrogen polysiloxane and dimethylpolysiloxane and stannous octoate in xylene, dried at 80 DEG C. and heated at 120 DEG C. to cure the siloxane. Specifications 804,198 and 804,199 are referred to.
GB4038562A 1962-10-25 1962-10-25 Improvements in or relating to organopolysiloxane compositions for the treatment of paper Expired GB980875A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4038562A GB980875A (en) 1962-10-25 1962-10-25 Improvements in or relating to organopolysiloxane compositions for the treatment of paper

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4038562A GB980875A (en) 1962-10-25 1962-10-25 Improvements in or relating to organopolysiloxane compositions for the treatment of paper

Publications (1)

Publication Number Publication Date
GB980875A true GB980875A (en) 1965-01-20

Family

ID=10414634

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4038562A Expired GB980875A (en) 1962-10-25 1962-10-25 Improvements in or relating to organopolysiloxane compositions for the treatment of paper

Country Status (1)

Country Link
GB (1) GB980875A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0031888A2 (en) * 1979-11-28 1981-07-15 Bayer Ag Coating compositions and process for preparing adhesive-repellent coatings

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0031888A2 (en) * 1979-11-28 1981-07-15 Bayer Ag Coating compositions and process for preparing adhesive-repellent coatings
EP0031888B1 (en) * 1979-11-28 1983-05-18 Bayer Ag Coating compositions and process for preparing adhesive-repellent coatings

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