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US 2021/0229497 A1Published application
Tire rubber composition and pneumatic tire
AssigneeSumitomo Rubber Industries, Ltd.
InventorHayato YOSHIYASU
Life of this patent
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Abstract
Provided are a rubber composition for tires that provides improved silica dispersion and fuel economy while maintaining good hardness, and a pneumatic tire including the rubber composition. The present invention relates to a rubber composition for tires, containing a rubber component, silica, and a silica dispersing agent represented by the following formula (I).
Claims8
A rubber composition for tires, comprising:
- a rubber component;
- silica;
- and
- a silica dispersing agent represented by the following formula (I):
- wherein R1 represents a hydrocarbon group;
- and R2 and R3 are the same or different and each represent a hydrogen atom, a hydrocarbon group, or a -(AO)n—H group wherein n represents an integer of 1 or larger, each n for R2 and R3 may be the same or different, and each AO is the same or different and represents an oxyalkylene group having 3 or more carbon atoms, and at least one of R2 or R3 is the -(AO)n—H group.
3 more elements
Dependencies are inferred from the claim text.