COPOLYMER, RUBBER COMPOSITION, CROSSLINKED RUBBER COMPOSITION, AND TIRE

摘要

PROBLEM TO BE SOLVED: To provide a random copolymer which is formed by irregularly arranging monomer units of a conjugated diene compound and a non-conjugated olefin and used for producing a tire having excellent roll processability and wear resistance; to provide a rubber composition containing the random copolymer; to provide a crosslinked rubber composition prepared by crosslinking the rubber composition; and to provide a tire made by using the rubber composition or the crosslinked rubber composition.

SOLUTION: The random copolymer formed by irregularly arranging monomer units of a conjugated diene compound and a non-conjugated olefin is characterized in that the content of moieties originating from the conjugated diene compound is greater than 30 mol%.

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