Method of improving heat stability of pigmentable silicone elastomer
US4677141A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 30, 1982 |
| Grant date | Jun 30, 1987 |
| Priority date | — |
| Expiry date | Jul 30, 2002 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K9/06
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A method of improving the heat stability of silicone elastomers is disclosed. An improved pigmentable silicone elastomeric composition is produced by mixing a silicone elastomer composition having a vinyl radical content of from 0.01 to 0.1 percent by weight with a pretreated, white clay having a surface area of less than 50 m.sup.2 /g, said surface containing olefinic unsaturated siloxy groups, and an organic peroxide vulcanizing agent. The improved silicone elastomeric composition is formed, then heated to vulcanize, to yield a silicone elastomer having improved resistance to the effects of elevated temperatures. The improved silicone elastomeric composition is also claimed. The improved silicone elastomeric composition can be pigmented.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.