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US 2026/0241745 A1Published application
Rubber Composition for Tire and Rubber Material for Tire
AssigneeTokuyama Corporation
InventorMasahiro Nakamura
Life of this patent
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Abstract
A rubber composition for a tire includes a diene rubber, fumed silica having a surface silanol group density of 3/nm2 or less, a silane coupling agent, and a diol, in which the silane coupling agent content is from 0.50 μmol/m2 to 3.9 μmol/m2 relative to the BET specific surface area per gram of fumed silica, and the diol content is from 3 μmol/m2 to 14 μmol/m2 relative to the BET specific surface area per gram of fumed silica.
Claims6
A tire rubber composition comprising:
- a diene-based rubber, a fumed silica having a surface silanol group density of 3 groups/nm2 or less, a silane coupling agent, and a diol;
- wherein a content of the silane coupling agent is between 0.50 μmol/m2 or more and 3.9 μmol/m2 or less with respect to a BET specific surface area per 1 g of the fumed silica, and
- a content of the diol is between 3 μmol/m2 or more and 14 μmol/m2 or less with respect to the BET specific surface area per 1 g of the fumed silica.
Dependencies are inferred from the claim text.