Rubber composition for tire
AssigneeThe Yokohama Rubber Co., Ltd.
InventorsAtsushi Kikkawa, Masayuki Kawazoe, Yoshiaki Sakamaki, Mitsuo Sakurai, Koichi Horie, Issey Nakakita
Life of this patent
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Abstract
A rubber composition for a tire, comprising at least one compound selected from the group consisting of ascorbic acid and derivatives thereof, tocopherols, and citric acid and derivatives thereof.
Claims13
A tire comprising parts including a tread, a sidewall, an inner liner, a belt layer and a bead filler, at least one of said tread, said sidewall, said inner liner, said belt layer and said bead filler being made of a rubber composition comprising (1) 0.05 to 5 parts by weight of at least one compound selected from the group consisting of ascorbic acid and a derivative thereof, tocopherol, and citric acid and a derivative thereof, and (2) 100 parts by weight of diene rubber or halogenated butyl rubber.
A tire comprising parts including a tread, a sidewall, an inner liner, a belt layer and a bead filler, at least one of said tread, said sidewall, said inner liner, said belt layer and said bead filler being made of a rubber composition comprising diene rubber or halogenated butyl rubber blended with a compound-attached filler obtained by attaching to a filler for rubber at least one compound selected from the group consisting of ascorbic acid and derivative thereof, tocopherol, and citric acid and a derivative thereof, said compound-attached filler being blended in an amount of 0.05 to 5 parts by weight of said at least one compound per 100 parts by weight of said diene rubber or halogenated butyl rubber.
A method of producing a tire comprising the steps of blending 0.05 to 5 parts by weight of at least one compound selected from the group consisting of ascorbic acid and a derivative thereof, tocopherol, and citric acid and a derivative thereof with 100 parts by weight of diene rubber or halogenated butyl rubber to provide a rubber composition and forming at least one of a tread, a sidewall, an inner liner, a belt layer and a bead filler of the tire with said rubber composition.
A method of producing a tire comprising the steps of attaching to a filler for rubber at least one compound selected from the group consisting of ascorbic acid and a derivative thereof, tocopherol, and citric acid and a derivative thereof to provide a compound-attached filler, blending said compound-attached filler in an amount of 0.05 to 5 parts by weight of said at least one compound with 100 parts by weight of diene rubber or halogenated butyl rubber to provide a rubber composition, and forming at least one of a tread, a sidewall, an inner liner, a belt layer and a bead filler of the tire with said rubber composition.
Dependencies are inferred from the claim text.