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US 2009/0275675 A1Published application
Rubber composition for tread and pneumatic tire using the same
AssigneeSumitomo Rubber Industries, Ltd.
InventorsNoriko Yagi, Kiyoshige Muraoka
Life of this patent
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Abstract
A method of compounding a modified, epoxidized natural rubber for use as a tire tread which includes the steps of modifying an epoxidized natural rubber containing a ring-opened epoxy group, compounding the modified, epoxidized natural rubber with another rubber, to form a rubber compound, together with silica and/or carbon black to form a rubber composition, and forming the rubber composition into a tire tread.
Claims12
A method of compounding a modified, epoxidized natural rubber for use in a rubber composition as a tire tread which comprises:
- reacting an epoxidized natural rubber with a component selected from the group consisting of a Lewis acid, an amine compound, a thiol compound, an amide component and an imidazole compound to obtain 5 to 100% by weight of a modified, epoxidized natural rubber containing a ring-opened epoxy group,
- compounding the 5 to 100% by weight of said modified, epoxidized natural rubber with 0 to 95% by weight of another rubber, to form a rubber component, together with silica and/or carbon black to form said rubber composition, and
- forming the rubber composition into a tire tread.
Dependencies are inferred from the claim text.