POLYMERS FUNCTIONALIZED WITH HETEROCYCLIC NITRILE COMPOUNDS

摘要

PROBLEM TO BE SOLVED: To provide functionalized polymers that impart cold flow resistance to linear backbone polydienes produced with lanthanide-based catalyst systems, and a method for producing the same.SOLUTION: A method for preparing a functionalized polymer comprises the steps of: preparing an active polymerization mixture comprising an end-reactive polymer by introducing a conjugated diene monomer and a lanthanide-based catalyst system, the active polymerization mixture including less than 20 wt.% of solvents based on the total weight of the polymerization mixture; and reacting the reactive polymer with a heterocyclic nitrile compound. Also provided is a functionalized polymer obtained by the method.