| abstract |
The present invention is directed to a copolymer of a monomer selected from the group consisting of 1,3-butadiene and isoprene and a monomer of formula (i) wherein R 1 is a covalent bond, phenylene, a diyl group. straight or branched alkane containing 1 to 10 carbon atoms, or a combination of one or more phenylene groups and one or more diyl groups of straight or branched alkanes containing 1 to 10 carbon atoms; and R2 is hydrogen or a line-ar or branched alkyl group containing 1 to 10 carbon atoms; ex is a sulfur atom or a structure of formula ii or iii, where, when x is of formula iii, the s atom of formula iii is adjacent to the phenyl ring of formula i and the n atom of formula iii is adjacent to a r1. ii iii. |