Silica-reinforced rubber compounded with mercaptosilanes and alkyl alkoxysilanes
US6433065B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 13, 2000 |
| Grant date | Aug 13, 2002 |
| Priority date | — |
| Expiry date | Oct 13, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L9/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The invention provides a sulfur vulcanizable silica-reinforced elastomeric compound having improved tensile mechanical and dynamic viscoelastic properties. The compounds are formed by mixing an elastomer optionally having an alkoxysilane terminal group, with silica in the presence of an alkyl alkoxysilane for desired processability and a mercaptosilane for increasing the bound rubber content. In particular, the mercaptosilane and the alkyl alkoxysilane are present in a ratio of a maximum of 0.14:1. Preferably, the mercaptosilane and the alkyl alkoxysilane are compounded with the elastomer and the silica at high temperature in the first mixing stage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.