Patent ID: 6376593
Filing Date: 2002-04-23
Classification: B60C,C08K,C08L

Abstract:
A rubber composition comprising100 parts by weight of rubber component and 40 parts by weight to 95 parts by weight of silica, wherein said rubber component comprises: (1) 5 percent by weight to 50 percent by weight of low molecular weight butadiene rubber (BR) having a cis 1,4-structure of 60 mol % to 98 mol % and a weight average molecular weight (Mw) of 5000 to 80000; and (2) 50 percent by weight to 90 percent by weight of styrene-butadiene rubber (SBR) having a bound styrene content of 15 percent by weight to 45 percent by weight and amount of a vinyl bonding in the butadiene portion of 7 mol % to 60 mol %.