Diene rubber composition, method of preparing the same and tire

Details Diene rubber composition, method of preparing the same and tire Diene rubber composition, method of preparing the same and tire

1982-04-22

1985-08-27

Briggs, Sr., Wilbert J.

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

Synthetic resins

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

152209R, 525250, 526 86, C08L 900, C08L 906

Patent

active

045379360

ABSTRACT:
A diene rubber composition comprising 25 to 90 parts by weight of at least one high molecular weight diene rubber (A) having an intrinsic viscosity [.eta.] of at least 2.0 and a glass transition point of not lower than -50.degree. C. and 75 to 10 parts by weight of at least one low molecular weight diene rubber (B) having an intrinsic viscosity [.eta.] of 0.01 to 2.0, said composition having an average intrinsic viscosity of at least 1.8.
Since this composition has an excellent wet grip and rolling resistance property and moreover has excellent processability, it is employed as tire tread rubber.

REFERENCES:
patent: 3278644 (1966-10-01), Zelinski
patent: 3281389 (1966-10-01), Hirshfield
patent: 3344206 (1967-09-01), Short
patent: 3669943 (1972-06-01), Komatsu et al.
patent: 4304885 (1981-12-01), Omori et al.
patent: 4341886 (1982-07-01), Freppel

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