Rubber composition for pneumatic tire treads

Details Rubber composition for pneumatic tire treads Rubber composition for pneumatic tire treads

C - Chemistry, Metallurgy

08

L

C08L 7/00 (2006.01) B60C 1/00 (2006.01) C08K 3/04 (2006.01) C08L 9/06 (2006.01) C08L 19/00 (2006.01)

Patent

CA 2054658

ABSTRACT OF THE DISCLOSURE Rubber compositions for use in tread portions of pneumatic tires are formulated essentially with a selected class of styrene-butadiene rubbers and a selected class of carbon blacks. The rubber has two specific different temperatures of glass transition, whereas the carbon black has a specific iodine adsorption. The resultant composition shows -35°C or lower in brittleness temperature and 0.7 or greater at 0°C in loss tangent, contributing to stable driving in both hot and cold seasons.

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