GB779788A - Vulcanisable composition for the manufacture of silicone rubber - Google Patents

Vulcanisable composition for the manufacture of silicone rubber

Info

Publication number
GB779788A
GB779788A GB3272254A GB3272254A GB779788A GB 779788 A GB779788 A GB 779788A GB 3272254 A GB3272254 A GB 3272254A GB 3272254 A GB3272254 A GB 3272254A GB 779788 A GB779788 A GB 779788A
Authority
GB
United Kingdom
Prior art keywords
siloxane
silicone rubber
hydrocarbon radical
weight
per cent
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
GB3272254A
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.)
Bayer AG
Original Assignee
Bayer AG
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 Bayer AG filed Critical Bayer AG
Priority to GB3272254A priority Critical patent/GB779788A/en
Publication of GB779788A publication Critical patent/GB779788A/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
    • C08G77/045—Polysiloxanes containing less than 25 silicon atoms
    • 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
    • C08G77/06—Preparatory processes
    • 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
    • C08G77/14—Polysiloxanes containing silicon bound to oxygen-containing groups
    • C08G77/18—Polysiloxanes containing silicon bound to oxygen-containing groups to alkoxy or aryloxy groups

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)

Abstract

A composition for making silicone rubber comprises a vulcanizable organopolysiloxane, an organic peroxide, a compound of the general formula R1O(R2SiOz)R1, wherein z is an integer from 1 to 5, R is a hydrocarbon radical and R1 is a hydrogen at or a hydrocarbon radical, and silicon dioxide of a mean particle size between 0.01 and 0.03 micron. The siloxanes used have from 1.75 to 2.25 radicals, e.g. methyl, ethyl, propyl, phenyl, tolyl, xylyl, mono-, di- or trimethylphenyl, benzyl or phenylmethyl, per Si atom. The peroxides such as benzoyl and lauroyl peroxides, are preferably used in amount of 0.5 to 6 per cent by weight of the siloxane. The silica filler is preferably obtained by the thermal oxidative decomposition of SiCl4 or Si(OC2H5)4, and is preferably used in amount of 1 to 25 per cent by weight of the siloxane. Pigments, e.g. chromium oxide and cadmium sulphide-selenide, and compression set additives, e.g. mercury and cadmium oxides, may also be added. The compositions are vulcanized by heating to 100-270 DEG C. for 30 minutes to 30 hours. In examples a dimethylsiloxane gum is mixed with finely divided silica, benzoyl peroxide and (1) dimethyldiethoxy silane, (2) diphenyl silanediol, and (3) decamethyldiethoxypentasiloxane.
GB3272254A 1954-11-11 1954-11-11 Vulcanisable composition for the manufacture of silicone rubber Expired GB779788A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3272254A GB779788A (en) 1954-11-11 1954-11-11 Vulcanisable composition for the manufacture of silicone rubber

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3272254A GB779788A (en) 1954-11-11 1954-11-11 Vulcanisable composition for the manufacture of silicone rubber

Publications (1)

Publication Number Publication Date
GB779788A true GB779788A (en) 1957-07-24

Family

ID=6687276

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3272254A Expired GB779788A (en) 1954-11-11 1954-11-11 Vulcanisable composition for the manufacture of silicone rubber

Country Status (1)

Country Link
GB (1) GB779788A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1058254B (en) * 1955-08-05 1959-05-27 Wacker Chemie Gmbh Process for the production of homogeneous or foam-shaped organopolysiloxane elastomers
US3344106A (en) * 1963-08-01 1967-09-26 Gen Electric Filled organopolysiloxane compositions of reduced structure
US6025435A (en) * 1995-05-29 2000-02-15 Dow Corning Toray Silicone Co., Ltd. Thermal conductive silicone rubber composition

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1058254B (en) * 1955-08-05 1959-05-27 Wacker Chemie Gmbh Process for the production of homogeneous or foam-shaped organopolysiloxane elastomers
US3344106A (en) * 1963-08-01 1967-09-26 Gen Electric Filled organopolysiloxane compositions of reduced structure
US6025435A (en) * 1995-05-29 2000-02-15 Dow Corning Toray Silicone Co., Ltd. Thermal conductive silicone rubber composition

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