Rubber composition
AssigneeZeon Corporation
InventorsMasao Nakamura, Yukio Takagishi
Life of this patent
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Abstract
The present invention provides a rubber composition comprising 100 parts by weight of a diene rubber component, 10 to 200 parts by weight of a reinforcing agent, and 0.1 to 15 parts by weight of a fatty acid salt. For example, the diene rubber preferably comprises a diene rubber having a heteroatom-containing polar group, the reinforcing agent preferably comprises carbon black or silica, and the fatty acid salt preferably comprises a metal salt of a C5 to C36 fatty acid. This rubber composition yields a vulcanized rubber showing improvements in heat build-up, tensile strength, abrasion resistance and processability.
Claims21
A rubber composition comprising 100 parts by weight of a diene rubber component, 10 to 200 parts by weight of a reinforcing agent comprising silica alone or a combination of silica and carbon black, the weight ratio of silica to carbon black being in the range of 50:50 to 90:10, and 0.1 to 15 parts by weight of an alkali metal salt or an alkaline earth metal salt of a fatty acid having 5 to 25 carbon atoms, and a silane coupling agent in an amount of 0.1 to 30 parts per 100 parts by weight of silica.
A rubber composition comprising 100 parts by weight of a diene rubber component, 30 to 120 parts by weight of a reinforcing agent comprising silica alone or a combination of silica and carbon black, the weight ratio of silica to carbon black being in the range of 50:50 to 90:10, and 1 to 5 parts by weight alkali metal salt or an alkaline earth metal salt of a fatty acid having 10 to 20 carbon atoms, and a silane coupling agent in an amount of 2 to 20 parts per 100 parts by weight of silica.
A rubber composition consisting essentially of 100 parts by weight of a diene rubber component, 30 to 120 parts by weight of a reinforcing agent comprising silica alone or a combination of silica and carbon black, the weight ratio of silica to carbon black being in the range of 50:50 to 90:10, and 1 to 5 parts by weight alkali metal salt or an alkaline earth metal salt of a fatty acid having 10 to 20 carbon atoms, and a silane coupling agent, which is a member selected from the group consisting of vinyltrichlorosilane, vinyltriethoxysilane, vinyltris-(β-methoxyethoxy)silane, β-(3,4-epoxycyclohexyl)ethyltrimethoxysilane and γ-glycidoxy-propyltrimethoxysilane, in an amount of 2 to 20 parts per 100 parts by weight of silica.
Dependencies are inferred from the claim text.