The Goodyear & Tire Rubber Company

Philip Jordan Young

Jennifer Lyn Ryba

Michael Lawrence Gersman

Nihat Ali Isitman

This invention relates to a tire with high performance tread of rubber composition for promoting tread durability and traction. For such purpose, a tread rubber composition is provided which contains a high Tg solvent solution polymerization prepared styrene/butadiene elastomer (SSBR) together with precipitated silica reinforcement and traction resin. The invention includes extension of the uncured high Tg SSBR by triglyceride vegetable oil instead of petroleum based oil.

Tire with tread containing vegetable oil extended high Tg styrene/butadiene elastomer and traction resin

The present invention is directed to a pneumatic tire comprising a vulcanizable rubber composition, the vulcanization rubber composition comprising: 1) 100 parts by weight of elastomer consisting of 25 to 35 phr of a styrene-butadiene rubber, 25 to 35 phr of a polybutadiene, and 35 to 45 phr of a natural rubber or synthetic polyisoprene, wherein the styrene-butadiene rubber is a functionalized solution polymerized styrene-butadiene elastomer having a glass transition temperature Tg(A) ranging from &#x2212;30 to &#x2212;10&#xb0; C. and having at least one functional group; the natural rubber or synthetic polyisoprene has a Tg(B) ranging from &#x2212;60 to &#x2212;70&#xb0; C.; and the polybutadiene is a cis 1,4 polybutadiene having a Tg(C) ranging from &#x2212;110 to &#x2212;90&#xb0; C., wherein Tg(A)&#x2212;Tg(B)&#x2265;25&#xb0; C., and Tg(B)&#x2212;Tg(C)&#x2265;25&#xb0; C.; 2) 60 to 80 phr of a prehydrophobated silica; 3) 1 to 10 phr of carbon black; 4) 1 to 3 phr of rubber processing oil; and 5) 5 to 25 phr of at least one hydrocarbon resin having a Tg&#x2265;20&#xb0; C., wherein the weight ratio of hydrocarbon resin to rubber processing oil is greater than 8.

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Twinsburg, OH, United States of America

Philip Jordan Young