Polyfunctional organosilane usable as a coupling agent and process for the obtainment thereof
US6774255B1 · kind B1 · utility
109Cited by
8References
30Claims
0Family size
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Key dates
| Filing date | Apr 10, 2003 |
| Grant date | Aug 10, 2004 |
| Priority date | — |
| Expiry date | Apr 10, 2023 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/548
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A monohydroxysilane polysulfide of the formula: in which the radicals R, which may be identical or different, are hydrocarbon groups preferably comprising from 1 to 15 carbon atoms; the radicals R′, which may be identical or different, are divalent linking groups preferably comprising from 1 to 18 carbon atoms; x is greater than or equal to 2. This hydroxysilane is in particular a bis-(propyidimethylsilanol) polysulfide. A process for obtaining such a hydroxysilane by alcoholysis and/or hydrolysis of a halogenated organosilane, followed by a sulfuration stage. Use of this hydroxysilane as a coupling agent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.