Process to produce silica-filled elastomeric compounds
US7238736B2 · kind B2 · utility
1Cited by
4References
15Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Apr 29, 2004 |
| Grant date | Jul 3, 2007 |
| Priority date | — |
| Expiry date | Mar 15, 2025 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/50
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention provides a process for preparing a filled halobutyl elastomer, which includes mixing a halobutyl elastomer with at least one mineral filler and at least one phosphine modifier and optionally curing the filled elastomer with sulfur or other curative systems. Filled halobutyl elastomers prepared according to the present invention possess improved levels of filler dispersion which results in a reduction in the hardness of the compound and an increased tensile strength.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.