Pneumatic tire
AssigneeToyo Tire Corporation
InventorAyana Uchida
Life of this patent
Estimating the term…
Abstract
A pneumatic tire includes: a rubber member A containing a rubber component containing 70 mass % to 100 mass % of a hydrogenated copolymer, sulfur, and a triazine-thiol compound; and a rubber member B containing sulfur and a rubber component containing a diene rubber. The hydrogenated copolymer is obtained by hydrogenating an aromatic vinyl-conjugated diene copolymer, has a weight average molecular weight of 300,000 or more as measured by gel permeation chromatography, and has a hydrogenation rate of a conjugated diene moiety of 80 mol % or more, the rubber member A and the rubber member B are in contact with each other at an interface, and a content of the triazine-thiol compound is 0.1 parts by mass to 5 parts by mass with respect to 100 parts by mass of the rubber component in the rubber member A.
Claims7
A pneumatic tire comprising:
- a rubber member A containing a rubber component containing 70 mass % to 100 mass % of a hydrogenated copolymer, sulfur, and a triazine-thiol compound;
- and
- a rubber member B containing sulfur and a rubber component containing a diene rubber, wherein
- the hydrogenated copolymer is obtained by hydrogenating an aromatic vinyl-conjugated diene copolymer, has a weight average molecular weight of 300,000 or more as measured by gel permeation chromatography, and has a hydrogenation rate of a conjugated diene moiety of 80 mol % or more,
- the rubber member A and the rubber member B are in contact with each other at an interface,
- the rubber member B is a base rubber of a tread, which is disposed at a tire radially outer side of a belt layer, and the rubber member A is a cap rubber of the tread, which disposed at a tire radially outer side of the base rubber,
- a content of the triazine-thiol compound is 0.1 parts by mass to 5 parts by mass with respect to 100 parts by mass of the rubber component in the rubber member A,
- the rubber member A further contains a quaternary ammonium salt, and a content of the quaternary ammonium salt is 0.1 parts by mass or more with respect to 100 parts by mass of the rubber component in the rubber member A, and
- a content ratio between the quaternary ammonium salt and the triazine-thiol compound is 0.20 to 1.50.
Dependencies are inferred from the claim text.