Functional diene block elastomer with a low PI and improved cold flow, and rubber composition containing same
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United States of America Patent
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Aug 18, 2015
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Nov 7, 2013
app pub date -
Nov 23, 2011
filing date -
Nov 23, 2010
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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.
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