GB765385A - Organosiloxane compositions - Google Patents

Organosiloxane compositions

Info

Publication number
GB765385A
GB765385A GB1924/55A GB192455A GB765385A GB 765385 A GB765385 A GB 765385A GB 1924/55 A GB1924/55 A GB 1924/55A GB 192455 A GB192455 A GB 192455A GB 765385 A GB765385 A GB 765385A
Authority
GB
United Kingdom
Prior art keywords
parts
polysilicates
mol
base member
calcium carbonate
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
GB1924/55A
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
Publication of GB765385A publication Critical patent/GB765385A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • C08G77/02—Polysilicates
    • 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
    • C08G77/20—Polysiloxanes containing silicon bound to unsaturated aliphatic groups
    • 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
    • C08G77/70—Siloxanes defined by use of the MDTQ nomenclature

Landscapes

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

Abstract

A coating composition consists essentially of (1) 100 parts (by weight) of an organopolysiloxane containing 75 to 100 mol. per cent, inclusive, of dimethylsiloxane units and up to 25 mol. per cent of siloxane units selected from diphenylsiloxane, phenylmethylsiloxane, methylvinylsiloxane and phenylvinylsiloxane units, the polysiloxane being soluble in benzene and having a viscosity of at least 500 cs. at 25 DEG C.; (2) 10 to 120 parts of calcium carbonate as filler; (3) 1 to 7 parts of a devolatilized liquid alkylpolysilicate in which the alkyl groups contain less than 5 carbon atoms each; and (4) 2 to 8 parts of an organoperoxide having at least 1 aromatic acyl group per molecule. Polysilicates specified are methyl, ethyl, n-propyl, isopropyl, n-primary butyl, secondary butyl, isobutyl and tertiary butyl polysilicates. Peroxides specified are benzoyl peroxide, tertiary butyl perbenzoate and dichloro- and monochloro-benzoyl peroxides. The components may be mixed in any order and the coating composition may be in the form of a paste or an organic solvent dispersion. Glass cloth or other base member can be coated by spraying, brushing, dipping or calendering and the coating thereafter vulcanized at 110 DEG to 150 DEG C. Superior coatings result when the siloxane, silicate and calcium carbonate are milled, e.g. at 250 DEG C. for 2 hours before milling with the peroxide, applying to the base member and vulcanizing. Examples are given. Specification 741,065 is referred to.
GB1924/55A 1954-01-25 1955-01-21 Organosiloxane compositions Expired GB765385A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US765385XA 1954-01-25 1954-01-25

Publications (1)

Publication Number Publication Date
GB765385A true GB765385A (en) 1957-01-09

Family

ID=22132649

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1924/55A Expired GB765385A (en) 1954-01-25 1955-01-21 Organosiloxane compositions

Country Status (1)

Country Link
GB (1) GB765385A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE112008000192B4 (en) * 2007-02-08 2013-05-23 Mitsubishi Cable Industries, Ltd. Seal material for a high pressure hydrogen tank, high pressure hydrogen tank and use of the high pressure hydrogen tank

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE112008000192B4 (en) * 2007-02-08 2013-05-23 Mitsubishi Cable Industries, Ltd. Seal material for a high pressure hydrogen tank, high pressure hydrogen tank and use of the high pressure hydrogen tank
DE112008000192B8 (en) * 2007-02-08 2013-08-01 Mitsubishi Cable Industries, Ltd. Seal material for a high pressure hydrogen tank, high pressure hydrogen tank and use of the high pressure hydrogen tank
US8794477B2 (en) 2007-02-08 2014-08-05 Toyota Jidosha Kabushiki Kaisha Sealing material for high-pressure hydrogen container, and high-pressure hydrogen container

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