Rubber compositions suitable for use in tire tread

Details Rubber compositions suitable for use in tire tread Rubber compositions suitable for use in tire tread

1982-06-02

1984-07-31

Lieberman, Allan

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525 97, 525914, C08L 700, C08L 900, C08L 906, C08L 5302

Patent

active

044631332

ABSTRACT:
A rubber composition suitable for use in tire tread is disclosed, which contains at least 20 parts by weight of a block copolymer per 100 parts by weight of total rubber content. This block copolymer comprises (A) a polymer segment obtained by starting from conjugated diolefin and monovinyl aromatic hydrocarbon and having a content of monovinyl aromatic hydrocarbon bond of not more than 10% by weight and (B) a copolymer segment obtained by copolymerization of conjugated diolefin and monovinyl aromatic hydrocarbon and having a content of monovinyl aromatic hydrocarbon bond of 15-50% by weight. Further, the block copolymer satisfies the following conditions:

REFERENCES:
patent: 3265765 (1966-08-01), Holden et al.
patent: 3526606 (1970-09-01), Minekawa et al.
patent: 4294937 (1981-10-01), Whitehead
patent: 4383085 (1983-05-01), Fujimaki et al.

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