Rubber composition for tire treads and a pneumatic tire...

Details Rubber composition for tire treads and a pneumatic tire... Rubber composition for tire treads and a pneumatic tire...

2007-05-22

2007-05-22

Yoon, Tae H (Department: 1714)

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...

C524S493000, C524S495000

Reexamination Certificate

active

09915576

ABSTRACT:
A rubber composition for tire treads which significantly improves the wet skid performance of the tire, which comprises (A) 100 parts by weight of a diene rubber containing at least 35% by weight of styrene-butadiene rubber, (B) 5 to 50 parts by weight of clay, (C) at least 5 parts by weight of silica having a nitrogen absorption specific surface area of 100 to 300 m2/g and (D) at least 1 parts by weight of carbon black having a nitrogen absorption specific surface area of 70 to 300 m2/g, wherein, the total amount of (B) clay and (C) silica is at least 30 parts by weight and a total amount of (B) clay, (C) silica and (D) carbon black is at most 100 parts by weight.

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