Rubber composition for tire treads

Details Rubber composition for tire treads Rubber composition for tire treads

1986-12-15

1988-05-17

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...

524572, 524575, 525 95, 525 99, C08K 304, C08L 5102

Patent

active

047451505

ABSTRACT:
A tire tread rubber composition exhibiting outstanding dynamic behavior and characterized in that the composition comprises as a rubber component at least 30 wt. % of an elastic styrene-butadiene copolymer prepared by solution polymerization with use of a lithium-base catalyst, the copolymer being higher than -60.degree. C. in glass transition temperature (T g) and at least 40.degree. C. in the peak mesial width of tan .delta. determined from the temperature range between the two points of intersection of the curve of tan .delta. with the line of tan .delta.=1/2a wherein a is the peak value of tan .delta. determined from a temperature-tan .delta. dispersion curve.

REFERENCES:
patent: 4071496 (1978-01-01), Kraus et al.
patent: 4111867 (1978-09-01), Komuro et al.
patent: 4383085 (1983-05-01), Fujimaki et al.
patent: 4398582 (1983-08-01), Yuto et al.
patent: 4433094 (1984-02-01), Ogawa et al.

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