Vulcanizates containing silica
US4150015A · kind A · utility
8Cited by
3References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 7, 1978 |
| Grant date | Apr 17, 1979 |
| Priority date | — |
| Expiry date | Mar 7, 1998 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K3/34
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A process is provided, and the product of that process, for the production of improved silica filled rubbery vulcanizates in which process a mixture is prepared comprising 100 parts by weight of a vulcanizable hydrocarbyl polymer containing hydroxyl groups, about 5 to about 100 parts by weight of silica and about 1 to about 10 parts by weight of magnesium oxide, the mixture is subjected to shearing at an elevated temperature, cooled, vulcanization active compounds are incorporated and then vulcanized. Such vulcanizates may be generally used especially where light-colored products are desired.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.