Rubber composition with a good dispersion of large amounts of reinforcing inorganic filler
US10961374B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 21, 2017 |
| Grant date | Mar 30, 2021 |
| Priority date | — |
| Expiry date | Mar 10, 2038 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60C2011/0025
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A rubber composition based on at least an elastomer matrix is provided. The elastomer matrix comprises a first diene elastomer having a number-average molecular weight, Mn, of greater than or equal to 100 000 g/mol; a functionalized second diene elastomer bearing at the chain end a function capable of reacting with the surface of silica, said functionalized diene elastomer having a number-average molecular weight, Mn, of less than or equal to 80 000 g/mol: and a reinforcing inorganic filler, in an amount ranging from 55 phr to 200 phr. The elastomeric matrix allows good dispersion of the reinforcing inorganic filler. A finished or semi-finished article comprising such a composition, tire tread comprising such a composition, and a tire or semi-finished product comprising such a composition is also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.