Rubber composition for tire tread and pneumatic tire
AssigneeBridgestone Corporation
InventorsMunenori Iizuka, Masashi Otsuki
Life of this patent
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Abstract
The present invention relates to a pneumonic tire and a rubber composition used in the same, both of which are capable of preventing static charge build-up on a tire surface without degrading various tire performances such as rolling resistance and so on, and particularly to a rubber composition comprising 10 to 30 parts by mass of an ionic liquid and 5 to 95 parts by mass of silica per 100 parts by mass of a rubber component containing at least 50% by mass of styrene-butadiene rubber, as well as a pneumatic tire using such a rubber composition in a tread portion.
Claims5
A rubber composition comprising 10 to 30 parts by mass of an ionic liquid and 70 to 90 parts by mass of silica per 100 parts by mass of styrene-butadiene rubber,
- wherein the ionic liquid is at least one of ionic liquids represented by the following formulae (II) to (III):
- wherein RR2a and R3 are independently an alkyl group having 1 to 8 carbon atoms, R2b and R2c are independently hydrogen or an alkyl group having 1 to 8 carbon atoms, and X is (CF3SO2)2N.
Dependencies are inferred from the claim text.