Polymer stabilizing compositions

摘要

A stabilized composition of matter comprises: (a) at least one block polymer comprising at least one non-elastomeric block and at least one polybutadiene block and (b) a stabilizing composition in an amount effective to improve heat or oxidative stability of the block polymer, said composition comprising (i) at least one hydroxyphenylalkylenyl isocyanurate and (ii) at least one polyphenylene diphosphonite. An alkylidene bisphenol is optionally added to achieve improved color stability.