COPOLYMER, RUBBER COMPOSITION USING SAME, AND TIRE

摘要

The present invention relates to a random copolymer including a monomer unit (a) derived from an aromatic vinyl compound and a monomer unit (b) derived from farnesene; a process for producing the copolymer including at least the step of copolymerizing an aromatic vinyl compound with farnesene; a rubber composition including (A) the copolymer, (B) a rubber component and (C) carbon black; a rubber composition including (A) the copolymer, (B) a rubber component and (D) silica; a rubber composition including (A) the copolymer, (B) a rubber component, (C) carbon black and (D) silica; and a tire using the rubber composition at least as a part thereof.