Organosilicon compound having polysulfide linkages and a rubber composition comprising the same
US4709065A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 19, 1986 |
| Grant date | Nov 24, 1987 |
| Priority date | — |
| Expiry date | Sep 19, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07F7/1804
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The novel organosilicon compound of the invention has two polysulfide linkages in a molecule and is represented by the general formula EQU (R.sup.1 O).sub.3 Si--R.sup.2 --S.sub.x --R.sup.3 --S.sub.x --R.sup.2 --Si(OR.sup.1).sub.3, in which R.sup.1 is an alkyl group having from 1 to 4 carbon atoms, R.sup.2 is a divalent hydrocarbon group having from 1 to 10 carbon atoms, R.sup.3 is a divalent hydrocarbon group having from 2 to 10 carbon atoms or a divalent hydrocarbon group additionally containing one or more of the linking units of the formula --O-- or --CO--O-- in the structure and X is a positive integer of from 2 to 6. The compound is useful as an additive in a rubber composition based on natural rubber or a diene-based synthetic rubber and a non-carbon inorganic filler to greatly improve the mechanical properties of the vulcanizate without increasing the Mooney viscosity of the unvulcanized rubber composition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.