GB967828A - Organopolysiloxane rubber compositions - Google Patents

Organopolysiloxane rubber compositions

Info

Publication number
GB967828A
GB967828A GB36204/61A GB3620461A GB967828A GB 967828 A GB967828 A GB 967828A GB 36204/61 A GB36204/61 A GB 36204/61A GB 3620461 A GB3620461 A GB 3620461A GB 967828 A GB967828 A GB 967828A
Authority
GB
United Kingdom
Prior art keywords
aryl
bis
arylene
siloxane
cured
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
GB36204/61A
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.)
General Electric Co
Original Assignee
General Electric 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
Priority claimed from US65578A external-priority patent/US3017378A/en
Application filed by General Electric Co filed Critical General Electric Co
Publication of GB967828A publication Critical patent/GB967828A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • C08G77/42—Block-or graft-polymers containing polysiloxane sequences
    • C08G77/458—Block-or graft-polymers containing polysiloxane sequences containing polyurethane sequences
    • 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
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40—High-molecular-weight compounds
    • C08G18/61—Polysiloxanes
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
    • C08L75/04—Polyurethanes
    • 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
    • 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
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2666/00—Composition of polymers characterized by a further compound in the blend, being organic macromolecular compounds, natural resins, waxes or and bituminous materials, non-macromolecular organic substances, inorganic substances or characterized by their function in the composition
    • C08L2666/02—Organic macromolecular compounds, natural resins, waxes or and bituminous materials
    • C08L2666/14—Macromolecular compounds according to C08L59/00 - C08L87/00; Derivatives thereof

Landscapes

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

Abstract

An aryl methane of the formula: R1OOCH.N-R-NHCOOR1, wherein R is an arylene, halogenated arylene or a bis arylene substituted alkylene radical, and R1 is an aryl or halogenated aryl radical, is used as a thermal stability additive in silicone rubber compositions. The methane is usually used in amount of 0.1 to 10% by wt. of the siloxane, and can be derived from the base catalysed reaction of an aryl-hydroxide and an aryldiisocyanate, many examples of which are given. The specified ingredients of the silicone rubber formulations include (1) convertible siloxanes containing alkyl, cyanoalkyl, alkenyl, aryl or halo-aryl radical, (2) fillers-silica (fume, precipitated and surface modified), titania, lithopone, calcium carbonate, diatomaceous earth and iron oxide, (3) pigments -TiO2 and Cr2O3, and (4) curing agents-benzoyl and bis-dichlorobenzoyl-peroxides and t-butyl perbenzoate. The compositions may also be cured, without curing catalysts, by high energy electron irradiation or g -radiation. In a typical example (1) a mixture of a methylphenyl-siloxane and fume silica was milled on a two-roll mill, while methylene bis-(1,4-phenylene-phenyl urethane) was added; bis-dichlorobenzoyl peroxide was then added and the mixture, in sheet form, was heat-cured. Specification 640,067, U.S.A. Specifications 2,448,756, 2,457,688, 2,484,595, 2,490,357, 2,521,528, 2,541,137, 2,610,167 and 2,657,149 are referred to.
GB36204/61A 1960-10-28 1961-10-09 Organopolysiloxane rubber compositions Expired GB967828A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US65578A US3017378A (en) 1960-10-28 1960-10-28 Rubber compositions

Publications (1)

Publication Number Publication Date
GB967828A true GB967828A (en) 1964-08-26

Family

ID=22063687

Family Applications (1)

Application Number Title Priority Date Filing Date
GB36204/61A Expired GB967828A (en) 1960-10-28 1961-10-09 Organopolysiloxane rubber compositions

Country Status (1)

Country Link
GB (1) GB967828A (en)

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