Silicone rubber composition
US4335035A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 30, 1980 |
| Grant date | Jun 15, 1982 |
| Priority date | — |
| Expiry date | Jul 30, 2000 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G77/70
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A silicone rubber composition comprising PA0 (A) 100 parts by weight of polyorganosiloxane having the formula: ##EQU1## wherein R.sup.1 is a substituted or unsubstituted monovalent hydrocarbon group with the proviso that from 0.01 to 0.3% of the R.sup.1 groups are vinyl groups, a is a number of from 1.98 to 2.0001, and n is a number of at least 3,000, PA0 (B) 10 to 100 parts by weight of finely divided silica, PA0 (C) more than 5 to 20 parts by weight of a polyorganohydrogensiloxane having the formula: ##EQU2## wherein R.sup.2 is a substituted or unsubstituted monovalent hydrocarbon group with the proviso that from 0.2 to 2.5% of the R.sup.2 groups are vinyl groups, b is a number of from 1.5 to 2.0, c is a number of from 0.01 to 0.5, the value of (b+c) is in the range of from 1.8 to 2.1, and m is a number of from 30 to 3,000, and PA0 (D) 0.01 to 3 parts by weight of organic peroxide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.