Rubber composition for running tread and method for obtaining same
US7649042B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 25, 2004 |
| Grant date | Jan 19, 2010 |
| Priority date | — |
| Expiry date | Jun 1, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/86
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention relates to a rubber composition usable for constituting a tire tread, said composition being based on at least (i) a reinforcing inorganic filler, (ii) a diene elastomer having a molar ratio of units originating from conjugated dienes which is greater than 30% which is prepared in emulsion and comprises carboxylic acid functions along its chain, and (iii) a bonding agent between said reinforcing inorganic filler and said elastomer which consists of a polysulphurised alkoxysilane. This composition is such that said elastomer is capable of being obtained by effecting: in an emulsifying solution, radical copolymerisation of at least one conjugated diene monomer with a precursor comonomer which is hydrolysable or oxidisable to carboxylic acid, in order to obtain an intermediate diene elastomer comprising precursor functions of said acid along its chain, then hydrolysis or oxidation of said precursor functions in order to obtain said elastomer comprising carboxylic acid functions along the chain.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.