| abstract |
A copolymer having excellent tire characteristics is provided. A copolymer of a monomer selected from 1,3-butadiene and isoprene and a monomer represented by formula I. [R1 is a covalent bond, phenylene, a C1-10 linear / branched alkanediyl group or a combination of one or more phenylene groups and one or more C1-10 linear / branched alkanediyl groups; R2 is hydrogen or a C1-10 linear / branched alkyl group; X is an S, sulfonyl or sulfonamide group] [Selection] None |