Rubber compositions and methods for producing the same
US6740700B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 25, 2001 |
| Grant date | May 25, 2004 |
| Priority date | — |
| Expiry date | Jun 26, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2321/00
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An objective of the present invention is to provide rubber composition and method for producing the same capable of giving a vulcanized rubber which has an excellent processability and a sufficient wearing resistance and which is useful for a tire. A rubber composition in the invention is obtained by the following step of preparing a first rubber formulation [P1] by kneading a formulation (A1) comprising a rubber component containing a conjugated diene-based rubber and a silica, preparing a second rubber formulation [P2] by kneading a formulation (B1) comprising a mixed material containing a silane coupling agent and the first rubber formulation [P1], and kneading a formulation (C) comprising the second rubber formulation [P2], a zinc oxide and a vulcanizing agent. Such conjugated diene-based rubber is preferably one having at least one selected from the group consisting of an alkoxysilyl, an amino, a hydroxyl and an epoxy groups.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.