GB779788A - Vulcanisable composition for the manufacture of silicone rubber - Google Patents
Vulcanisable composition for the manufacture of silicone rubberInfo
- 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
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.
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)
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 |
-
1954
- 1954-11-11 GB GB3272254A patent/GB779788A/en not_active Expired
Cited By (3)
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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