METHOD FOR PRODUCING STABILIZED POLYMER

摘要

Provided is a method for producing a stabilized polymer wherein inhibition of the polymerization of a monomer that has an ethylenically unsaturated bond is suppressed even if a specific phenolic antioxidant is added before or during the polymerization of the monomer. Specifically provided is a method for producing a stabilized polymer, which is characterized by comprising a step in which one or more phenolic antioxidants represented by general formula (I), (II) or (III) and masked with an organic aluminum is added into the catalyst system or the polymerization system before or during the polymerization of a monomer that has an ethylenically unsaturated bond.