Compounds useful as stabilizing agents for rubber vulcanizates
US4657956A · kind A · utility
0Cited by
9References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 13, 1985 |
| Grant date | Apr 14, 1987 |
| Priority date | — |
| Expiry date | Sep 13, 2005 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2601/16
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Additives for rubber compositions, giving vulcanizates having improved retention of optimum physical properties, are compounds having the formula R--S--B--S--R where B is an organic bridging group and R is an electron-withdrawing group, for example CN, CCl.sub.3, a radical containing an activated methylene group linked to the sulphur atom or the enolic tautomer of a keto-activated methylene group. Also useful as stabilizing agents are oligomeric analogues of such compounds.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.