Heterogeneous silica carbon black-filled rubber compound
US5773504A · kind A · utility
13Cited by
4References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 11, 1997 |
| Grant date | Jun 30, 1998 |
| Priority date | — |
| Expiry date | Apr 11, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2421/00
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The present invention relates to a heterogeneous silica/carbon black-filled rubber compound and a process for making the same. The process comprises PA1 (a) intimately dispersing substantially all of the silica filler in a first rubber to form a silica-filled compound; PA1 (b) separately intimately dispersing the majority of carbon black in a second rubber, which is different from said first rubber, to form a carbon black-filled compound; and PA1 (c) mixing said silica-filled compound with said carbon black-filled compound to form a heterogeneous silica/carbon black-filled rubber compound.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.