Rubber composition for tread

Details Rubber composition for tread Rubber composition for tread

2007-07-10

2007-07-10

Choi, Ling-Sui (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...

C525S330400, C525S329300, C525S331100, C525S331800, C525S332700, C525S348000, C525S332600, C525S343000

Reexamination Certificate

active

11446159

ABSTRACT:
A rubber composition for a tread optimizing a vulcanization speed in a vulcanization step and, further, improving heat aging resistance is provided.A rubber composition for a tread comprising 20 to 90 parts by weight of silica,0.5 to 2 parts by weight of (A) a guanidine vulcanization accelerator,0.1 to 0.5 part by weight of (B) a thiuram vulcanization accelerator,and 0.5 to 2 parts by weight of (C) a sulfenamide vulcanization accelerator represented by the general formula (1):(wherein R is a linear alkyl group or a branched alkyl group having 1 to 18 carbons),based on 100 parts by weight of a rubber component.

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