Functional diene block elastomer with a low PI and improved cold flow, and rubber composition containing same
US9109109B2 · kind B2 · utility
0Cited by
7References
18Claims
0Family size
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Key dates
| Filing date | Nov 23, 2011 |
| Grant date | Aug 18, 2015 |
| Priority date | — |
| Expiry date | Mar 3, 2032 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2205/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The invention relates to a functionalized diene elastomer composed a) of a specific block copolymer functionalized, at the chain end or in the middle of the chain, by a tin functional group, b) of a specific block copolymer star-branched by tin and c) of a content of less than 15% by weight, with respect to the total weight of the functionalized diene elastomer, of a specific non-tin-functional block copolymer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.