GB893399A - Improvements in or relating to organosiloxane compositions - Google Patents

Improvements in or relating to organosiloxane compositions

Info

Publication number
GB893399A
GB893399A GB29610/60A GB2961060A GB893399A GB 893399 A GB893399 A GB 893399A GB 29610/60 A GB29610/60 A GB 29610/60A GB 2961060 A GB2961060 A GB 2961060A GB 893399 A GB893399 A GB 893399A
Authority
GB
United Kingdom
Prior art keywords
parts
organopolysiloxane
radicals
methyl
indanthrene blue
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
GB29610/60A
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.)
Dow Silicones Corp
Original Assignee
Dow Corning Corp
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 Dow Corning Corp filed Critical Dow Corning Corp
Publication of GB893399A publication Critical patent/GB893399A/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
    • C08G77/04—Polysiloxanes
    • C08G77/12—Polysiloxanes containing silicon bound to hydrogen
    • 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
    • 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
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/0008—Organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59
    • C08K5/0041—Optical brightening agents, organic pigments
    • 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

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)
  • Sealing Material Composition (AREA)

Abstract

A silicone rubber stock comprises (1) 100 parts by weight of an organopolysiloxane having an average of from 1,9 to 2,01 inclusive methyl, phenyl, vinyl or 3,3,3-trifluoropropyl radicals per silicon atom, at least 25% of the radicals being methyl radicals and the organopolysiloxane having a viscosity of at least 500 cs. at 25 DEG C. and (2) from 1 to 10 parts by weight of indanthrene blue, phthalocyanine, a chelated metal complex of phthalocyanine, or terphenyl. The compositions may contain inorganic fillers, e.g. silicus (native, precipitated, fume and raerogels), carbon black, metal oxides and silicates, low viscosity hydroxylated siloxanes and other conventional additives. The compositions may be vulcanized with, for example ditertiary butyl peroxide, sulphur or an orthosilicate or polysilicate such as methyl silicate and a catalyst such as dibutylt in diacetate, lead octoate or methylamine. The vulcanizing agent and filler are preferably used in amounts of from 1 to 10 and to 300 parts by weight respectively per 100 parts of organopolysiloxane. In a typical example 100 parts of a phenylmethylpolysiloxane gum, 3 parts of indanthrene blue, 30 parts of fume silica, 8 parts of a 50 cs. hydroxylated dimethylpolysiloxane and 5,6 parts of dibenzoyl peroxide were milled and cured for 5 minutes at 125 DEG to 135 DEG C. The resistance of the resulting elastomer at 200 DEG C. to radiation from a cobalt-60 source is compared with that of an elastomer prepared from a similar composition which contains no indanthrene blue. The elastomers may be used under conditions of high temperature and high radiation intensity, for example as electrical insulation or as gaskets. Specification 883,266 is referred to.
GB29610/60A 1959-09-24 1960-08-26 Improvements in or relating to organosiloxane compositions Expired GB893399A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US893399XA 1959-09-24 1959-09-24

Publications (1)

Publication Number Publication Date
GB893399A true GB893399A (en) 1962-04-11

Family

ID=22217121

Family Applications (1)

Application Number Title Priority Date Filing Date
GB29610/60A Expired GB893399A (en) 1959-09-24 1960-08-26 Improvements in or relating to organosiloxane compositions

Country Status (1)

Country Link
GB (1) GB893399A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5153244A (en) * 1989-10-31 1992-10-06 Dow Corning Toray Silicone Company, Ltd. Curable organosiloxane composition yielding elastomers exhibiting reduced compression set values
WO2012102852A1 (en) 2011-01-26 2012-08-02 Dow Corning Corporation High temperature stable thermally conductive materials
CN112437788A (en) * 2019-06-24 2021-03-02 富士高分子工业株式会社 Heat-resistant thermally conductive composition and heat-resistant thermally conductive sheet
EP3929240A4 (en) * 2020-02-13 2022-04-27 Fuji Polymer Industries Co., Ltd. Heat resistant silicone resin composition and heat resistant silicone resin composite material

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5153244A (en) * 1989-10-31 1992-10-06 Dow Corning Toray Silicone Company, Ltd. Curable organosiloxane composition yielding elastomers exhibiting reduced compression set values
WO2012102852A1 (en) 2011-01-26 2012-08-02 Dow Corning Corporation High temperature stable thermally conductive materials
US9598575B2 (en) 2011-01-26 2017-03-21 Dow Corning Corporation High temperature stable thermally conductive materials
US10000680B2 (en) 2011-01-26 2018-06-19 Dow Silicones Corporation High temperature stable thermally conductive materials
CN112437788A (en) * 2019-06-24 2021-03-02 富士高分子工业株式会社 Heat-resistant thermally conductive composition and heat-resistant thermally conductive sheet
CN112437788B (en) * 2019-06-24 2022-09-13 富士高分子工业株式会社 Heat-resistant thermally conductive composition and heat-resistant thermally conductive sheet
EP3929240A4 (en) * 2020-02-13 2022-04-27 Fuji Polymer Industries Co., Ltd. Heat resistant silicone resin composition and heat resistant silicone resin composite material

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