Rubber composition for use as a tire tread

Details Rubber composition for use as a tire tread Rubber composition for use as a tire tread

1992-02-18

1993-07-13

Michl, Paul R.

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...

524485, 524486, 524495, 524496, 524505, 524847, C08K 501, C08K 304, C08L 5302

Patent

active

052274241

ABSTRACT:
A rubber composition for tire treads is disclosed which is designed to exhibit high resistance to skidding on wet, icy and snowy roads. A selected rubber blend of styrene-butadiene rubber and natural rubber and/or polyisoprene rubber is combined with a selected carbon black of specified specific surface areas and also with a selected softener of specified viscosity-gravity constants. The styrene-butadiene rubber consists essentially of two styrene-butadiene block copolymers each having varied styrene and vinyl contents and a specified transition temperature width, one block having a higher glass transition temperature than the other.

REFERENCES:
patent: 3795651 (1974-03-01), Yamaguchi et al.
patent: 3795652 (1974-03-01), Yamaguchi et al.
patent: 4433094 (1984-02-01), Ogawa et al.
patent: 4673709 (1987-06-01), Nordsiek
patent: 4732927 (1988-03-01), Ida
patent: 4745150 (1988-05-01), Ida
patent: 4748168 (1988-05-01), Kawakami et al.
patent: 4908401 (1990-03-01), O'Hara

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