New Additive Solutions for the PVC Industry

摘要

Phenolic products,especially sterically hindered phenols,are widely used throughout the PVC industry.For instance,as chain-stoppers and antioxidants in PVC polymerization,to terminate the reaction and prevent degradation of the virgin resin in the stripper and dryer.Methylmethacrylate-butadiene-styrene (MBS)a, frequency used impact modfiier for rigid PVC,needs highly efficient protection against oxidative degradation of its rubber phase by a synergistic blend of a phenolic antioxidant with a thiosynergist.Plasticizers for flexible PVC in thermally demanding applications are also stabilized with phenolic antioxidants.