Diene rubber blends for tire treads

Details Diene rubber blends for tire treads Diene rubber blends for tire treads

C - Chemistry, Metallurgy

08

L

152/124, 400/644

C08L 9/00 (2006.01) B60C 1/00 (2006.01) C08F 36/04 (2006.01)

Patent

CA 1208838

ABSTRACT OF THE DISCLOSURE 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 [?] of 2 to 6, the Mw/Mn value of not more than 2.0 and a glass transition point of not lower than -50°C and 75 to 10 parts by weight of at least one low molecular weight diene rubber (B) having an intrinsic viscosity [?] of 0.01 to 2.0, said com- position 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.

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