Sughrue Mion, PLLC
Rubber composition and tire
A first object of the present invention is to provide a rubber composition which improves both wear resistance and low heat-buildup property, and a second object is to provide a tire in which low heat-buildup property (low fuel consumption) and tear resistance are improved without impairing wear resistance. In order to achieve the first object, a first aspect of the present invention is a rubber composition comprising a rubber component selected from at least one of natural rubber and a diene-based synthetic rubber, and a carbon black. The carbon black has a dibutyl phthalate absorption amount (DBP) of 140 to 200 ml/ 100 g. An aggregate of the carbon black has a ratio (Dw/Dn) of weight average diameter (Dw) to number average diameter (Dn) of 1.80 to 2.40, and the carbon black has a specific tinting strength (Tint) satisfying an inequality: Tint &gE;0.100&times; nitrogen absorption specific surface area (N2SA)+93. In order to achieve the second object, a second aspect of the present invention is a tire which has at least a tread, and the tread is made of the rubber composition of the first aspect of the invention.
Bridgestone Corporation
Y C C
Y10T C08K C08K
additional inventional inventional
Yuichiro Hiroshi
Nakamura Yamada