STABILIZATION OF PROPYLENE POLYMERS

摘要

Olefin polymers stabilized against deterioration caused by exposure to ultraviolet light. The stabilization is effected by means of 3.9-bis(2,2,6,6-tetramethyl-4-piperidinyl-oxy)-2,4,8,10,3,9-tetraoxadiphospha(5,5)spiroundecane.