TIRE TREAD WITH INCOMPATIBLE RUBBERS
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United States of America Patent
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Dec 3, 2015
app pub date -
Dec 20, 2013
filing date -
Dec 31, 2012
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Abstract
A tread for a tire, the tread comprising a rubber composition that is based upon a cross-linkable elastomer composition, the cross-linkable elastomer composition comprising, per hundred parts by weight of rubber (phr), a high-Tg rubber being a highly unsaturated diene elastomer having a glass transition temperature of between −30° C. and 0° C., a low-Tg rubber being a highly unsaturated diene elastomer having a glass transition temperature of between −110° C. and −60° C. The high-Tg and the low-Tg elastomers are incompatible and this provides, among other advantages, improved snow traction of the tread when compared to tire treads having lower Tg.
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