Rubber composition

Details Rubber composition Rubber composition

2007-09-11

2007-09-11

Wu, David W. (Department: 1713)

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

Synthetic resins

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

C525S236000

Reexamination Certificate

active

11209784

ABSTRACT:
The present invention provides a rubber composition for a sidewall or a clinch having improved cut resistance, crack growth resistance and low fuel consumption for an automobile the present invention relates to a rubber composition for a side wall or a clinch comprising a rubber component containing:(a) 20 to 60% by weight of polybutadiene rubber containing 2.5 to 20% by weight of crystal 1,2-syndiotactic polybutadiene,(b) 5 to 40% by weight of a tin modified polybutadiene rubber polymerized by a lithium initiator, wherein the amount of tin atoms is 50 to 3000 ppm, the amount of vinyl bonds is 5 to 50% by weight and molecular weight distribution (mw/mn) is at most 2, and (c) 20 to 75% by weight of a rubber except for (a) and (b).

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patent: 10-110065 (1998-04-01), None

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