Rubber compositions for tire treads

Details Rubber compositions for tire treads Rubber compositions for tire treads

1987-04-30

1988-05-31

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...

524495, 524526, 525237, C08K 304, C08K 501, C08L 906

Patent

active

047481684

ABSTRACT:
Rubber compositions suitable for tire treads are disclosed. Starting rubbers made up of at least one SBR of -20.degree. C. to -40.degree. C. in Tg and at least one SBR of lower than -45.degree. C. in Tg are blended with specified amounts of carbon blacks having a N.sub.2 SA of more than 120 m.sup.2 /g and of softeners having a VGC of 0.90 to 0.98, whereby the compositions are provided with a storage shear modulus of less than 500 MPa at -30.degree. C. The compositions are excellent in friction performance, abrasion resistance and low-temperature resistance.

REFERENCES:
patent: 4398582 (1983-08-01), Yoto et al.
patent: 4647614 (1987-03-01), Takao et al.
patent: 4670502 (1987-06-01), Hargis et al.

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