POLYMER FUNCTIONALIZED WITH HETEROCYCLIC NITRILE COMPOUND

摘要

PROBLEM TO BE SOLVED: To provide a rubber vulcanizate which shows reduced hysteresis in tire production and a novel functionalized polymer that exhibits reduced cold flow.SOLUTION: Provided is a method for producing a functionalized polymer, comprising a step of reacting a conjugated diene polymer having a reactive chain end, obtained by a lanthanide-based catalyst system, and a heterocyclic nitrile compound (2-pyrimidine carbonitrile).