官能化氢化聚合物

1. A hydrogenated functionalized polymer obtained by selectively hydrogenating functionalized elastomer double bonds to a predetermined level of saturation, wherein the functionalized elastomer is a reaction product of a living elastomeric polymer and a polymerization terminator of formula I, wherein the functionalized elastomer comprises repeat units of a diene monomer and optionally a vinyl aromatic monomer, and the functionalized elastomer comprises at least 92 percent by weight of cis 1, 4 microstructure content based on the weight of the polydiene content of the functionalized elastomer wherein R1 is C1 to C4 linear alkyl, or C1 to C4 branched alkanediyl; X1, X2, X3 are independently O, S, or a group of formula (II) or (III) where R2 is C1 to C18 linear or branched alkyl; Z is —R3—X4; R3 is C1 to C18 alkanediyl or dialkyl ether diyl; X4 is a group of structure IV or V wherein R6, R7, and R8are independently H or C1 to C8 alkyl; R12 and R13 are independently H, aryl or C1 to C8 alkyl; Q is N or a group of structure IX wherein R14 is C1 to C8 alkyl.