Initiation system for the anionic polymerization of conjugated dienes, and method for preparing diene elastomers
US8394903B2 · kind B2 · utility
7Cited by
38References
19Claims
0Family size
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Key dates
| Filing date | Dec 22, 2009 |
| Grant date | Mar 12, 2013 |
| Priority date | — |
| Expiry date | Mar 1, 2030 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F212/08
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention relates to a novel initiating system for the preparation of a living diene elastomer functionalized at the chain end by an amine group by anionic polymerization. The novel initiating system comprises an organolithium compound and a tin amide.The invention also relates to processes for the preparation of modified elastomers comprising an amine group at the chain end. These modified elastomers prove to be particularly advantageous in reinforced rubber compositions for tyres as they confer improved dynamic and mechanical properties in the vulcanized state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.