Benefits of High-Performance Phosphite in the Gamma Irradiation of Polyolefins

摘要

The highly active process stabilizer bis(2,4-dicumylphenyl)pentaerythritol diphosphite (P1) was compared in a series of polyolefin formulations with tris(2,4-di-t-butylphenyl)phosphite (P2).Because of its high activity,there was less polymer degradation during processing with P1 as compared to P2.As a result,improvements in clor and other physical properties were observed for the polymers,not only during processing,but alos after treatment with gamma radiation.