Rubber composition for tire tread and method for producing the same
AssigneeToyo Tire Corporation
InventorKeisuke Iwakuni
Life of this patent
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Abstract
A rubber composition for a tire tread that can suppress increase of rubber hardness due to migration of an oil with time is provided. The rubber composition for a tire tread includes a diene rubber, an oil, and oil absorptive polymer particles having an oil absorption value of from 100 to 1,500 ml/100 g, wherein the content of the oil absorptive polymer particles is from 2.5 to 60 parts by mass per 100 parts by mass of the oil. A pneumatic tire having a tread rubber comprising the rubber composition is provided.
Claims10
A rubber composition for a tire tread comprising a diene rubber, an oil, and oil absorptive polymer particles having an oil absorption value of from 100 to 1,500 ml/100 g, wherein a content of the oil absorptive polymer particles is from 2.5 to 60 parts by mass per 100 parts by mass of the oil and wherein the oil absorptive polymer particles have a glass transition temperature of from −70 to −500° C.
A rubber composition for a tire tread comprising:
- an oil-polymer composite comprising oil absorptive polymer particles having an oil absorption value of from 100 to 1,500 ml/100 g and an oil absorbed therein, and a diene rubber, wherein a content of the oil absorptive polymer particles is from 2.5 to 60 parts by mass per 100 parts by mass of the oil contained in the rubber composition, and wherein the oil absorptive polymer particles have a glass transition temperature of from −70 to −500C.
Dependencies are inferred from the claim text.