FIELD: chemistry.
SUBSTANCE: rubber composition contains: per 100 wt parts of diene rubber containing 40 wt % or more of butadiene rubber and styrene-butadiene rubber, from 80 to 150 wt parts of silica having a specific surface area of CTAB from 150 to 250 m2/g, a silane compound containing a long chain alkyl group in an amount of 1 to 10 wt % of the amount of silica. The styrene component in the diene rubber is from 15 to 20 wt %, and the vinyl component in the diene rubber is from 18 to 28 wt %. The average temperature of the vitrification of diene rubber is -55°C or lower.
EFFECT: invention makes it possible to improve performance on ice, characteristics on wet surfaces and durability before or above traditional levels.
5 cl, 1 dwg, 3 tbl
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