Rubber composition for tire tread

Details Rubber composition for tire tread Rubber composition for tire tread

1988-02-16

1989-06-20

Lieberman, Allan M.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

524474, 524481, 524483, 524484, 524490, 524491, 524571, C08K 304, C08K 501, C08L 900

Patent

active

048409880

ABSTRACT:
This invention is a rubber composition for a tire tread of 100 parts by weight (pbw) diene system rubber to which are added x pbw of carbon black and y pbw of softening agent. The softening agent contains z pbw of liquid polymer. The amounts of x, y and z are described by the inequalities (5/8)x-20.ltoreq.y.ltoreq.x and (y/5)+5.ltoreq.z. The liquid polymer has a flow points of 20.degree. C. or below. The rubber composition provided here gives a tire tread with improved performance in terms of grade climbing ability, braking and standing start, on ice as well as on snow. Besides, the service life of the rubber is prolonged, and tread performance deterioration is reduced to a minimum.

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