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US 12,304,245 B2Granted
Tire rubber composition and pneumatic tire
AssigneeSumitomo Rubber Industries, Ltd.
InventorsShuichiro Ono, Fumiya Kato
Life of this patent
Estimating the term…
Abstract
The present invention aims to provide tire rubber composition with significantly improved overall performance in terms of wet grip performance and fuel economy, and pneumatic tires including the rubber compositions. The tire rubber compositions of the present invention have a tan δ versus temperature curve whose peak tan δ and half width satisfy the following relationship (1): Peak tan δ/Half width≥0.025 (1).
Claims10
A tire rubber composition,
- comprising, based on 100% by mass of total rubber components therein, 25% by mass or more of an isoprene-based rubber and 35% by mass or more of a styrene-butadiene rubber, and
- having a tan δ versus temperature curve whose peak tan δ and half width satisfy the following relationship (1):
- Peak tan δ/Half width≥0.025 (1).
Dependencies are inferred from the claim text.