Sughrue Mion, PLLC
Rubber composition and tire using the same
This invention relates to a rubber composition possessing high wear resistance and low heat buildup, and more particularly to a rubber composition comprising 100 parts by mass of a diene polymer and 20-250 parts by mass of a carbon black as a filler, characterized in that the carbon black has a dibutyl phthalate (DBP) absorption number of 40-180 cm3/100 g, a nitrogen adsorption specific surface area (N2SA) of 40-300 m2/g, a tint strength (TINT) of 50-150% and a light transmittance of toluene extract of not less than 90% and a relation between the nitrogen adsorption specific surface area and the light transmittance of toluene extract satisfies the following equation (I):0.0283×A×(100−B)≦40  (I)(wherein A is a nitrogen adsorption specific surface area and B is a light transmittance of toluene extract).
Bridgestone Corporation
C B C C C C C
C01P B60C C09C C08K C01P C09C C01P
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Hiroshi Atsushi
Yamada Nakayama