Blocked mercaptosilane coupling agents for filled rubbers
US6414061B1 · kind B1 · utility
85Cited by
8References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 21, 1999 |
| Grant date | Jul 2, 2002 |
| Priority date | — |
| Expiry date | Apr 21, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L9/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
This invention describes novel blocked mercaptosilanes wherein the hydrogen atom of the mercaptan functionality has been substituted. The invention includes methods of preparation for the blocked mercaptosilicon compounds as well as their use in filled rubbers. The blocked mercaptosilanes described are unique in that they allow the mixing of fillers with organic polymers to proceed while remaining inert toward coupling to the polymer. The coupling reactions of these blocked mercaptosilicon compounds are triggered by addition of an appropriate deblocking agent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.