Rubber composition for tire tread

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...

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524445, C08K 334

Patent

active

055917941

ABSTRACT:
A tread rubber composition is provided which includes 100 parts by weight of a diene rubber containing as a main component thereof at least one rubber selected from the group consisting of natural rubber, polyisoprene and polybutadiene, and 30 to 90 parts by weight of a vulcanized rubber powder, wherein the vulcanized rubber powder is a powder of a rubber resulting from the vulcanization of a rubber composition including 100 parts by weight of a diene rubber containing as a main component thereof at least one rubber selected from the group consisting of natural rubber, polyisoprene and polybutadiene, and 30 to 100 parts by weight of a clay mainly composed of kaolinite. The rubber composition for tire tread assures improved braking performance with the fracture resistance thereof kept satisfactory and, hence, a tire tread made of such rubber composition makes it possible to build a studless tire exhibiting an improved gripping force.

REFERENCES:
patent: 4352704 (1982-10-01), Williams et al.
patent: 4522970 (1985-06-01), Scriver
patent: 4598105 (1986-07-01), Weber et al.
patent: 4714733 (1987-12-01), Itoh et al.
patent: 4897446 (1990-01-01), Aonuma
patent: 5382635 (1995-01-01), McInnis et al.

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