Rubber composition for tire tread

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United States of America Patent

PATENT NO 9150712
APP PUB NO 20130237653A1
SERIAL NO

13788633

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Abstract

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A rubber composition for a tire tread contains styrene-butadiene rubber in a compounding amount of 100 parts by weight, silica in a compounding amount of 90 to 170 parts by weight, and an aromatic modified terpene resin in a compounding amount of 10 to 30 parts by weight. The styrene-butadiene rubber contains 40 to 100% by weight of solution-polymerized styrene-butadiene rubber (S-SBR1) and 60 to 0% by weight of solution-polymerized styrene-butadiene rubber (S-SBR2), the total content thereof being 100% by weight. The S-SBR1 has a styrene content of 30 to 38% by weight and a vinyl content of 60 to 80% by weight, the total content thereof being 100% by weight, a glass transition temperature of −20 to −5° C., and a weight average molecular weight of 1,000,000 to 1,800,000.

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Patent Owner(s)

  • THE YOKOHAMA RUBBER CO., LTD.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kushida, Naoki Hiratsuka, JP 40 387
Takizawa, Youichi Hiratsuka, JP 8 102

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