Tread rubber composition and tire using the composition
AssigneeSumitomo Rubber Industries, Ltd.
InventorsTakahiro Fukumoto, Yoko Nakada, Yoichi Mizuno, Kazuo Kadomaru
Life of this patent
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Abstract
A tread rubber composition of excellent hydrophobic property and water repellency suitable to a studless tire of excellent performance on ice, comprising a diene rubber comprising at least one rubber selected from the group consisting of natural rubber, isoprene and polybutadiene as a main ingredient and, based on 100 parts by weight of the diene rubber, from 10 to 40 parts by weight of a clay comprising kaolinite as a main ingredient and having an oil absorption amount of from 50 to 70 g/100 g and 0.1 to 8 parts by weight of a silane coupling agent.
Claims18
A tread rubber composition comprising a diene rubber comprising at least one rubber selected from the group consisting of natural rubber, polyisoprene and polybutadiene as a main ingredient and, based on 100 parts by weight of said diene rubber, from 10 to 40 parts by weight of a clay comprising kaolinite as a main ingredient and having an oil absorption amount of from 50 to 70 g/100 g and from 0.1 to 8 parts by weight of a silane coupling agent, wherein said clay is sintered at a temperature from 600 to 800.degree. C., and said silane coupling agent is incorporated in a state previously used for treating the clay.
A studless tire for an icy road surface, comprising a tread having water repellency formed from a tread rubber composition comprising a diene rubber comprising at least one rubber selected from the group consisting of natural rubber, polyisoprene and polybutadiene as a main ingredient and, based on 100 pars by weight of said diene rubber, from 10 to 40 parts by weight of a clay comprising kaolinite as a main ingredient and having an oil absorption amount of from 50 to 70 g/100 g and from 0.1 to 8 parts by weight of a silane coupling agent, wherein said clay is sintered at a temperature from 600 to 800.degree. C., and said silane coupling agent is incorporated in a state previously used for treating the clay.
Dependencies are inferred from the claim text.