CHEMICAL ADDITIVES AND THEIR USE THEREOF FOR MODIFYING MECHANICAL PROPERTIES OF PVC AND PREVENTING THE FORMATION OF SURFACE DEFECTS DURING PVC CALENDERING

摘要

The disclosure relates to a compound of formula wherein Y, X, Ra, Rb, R1 and R2 are defined herein, PVC compositions comprising the compounds disclosed herein, as well as methods for modulating properties of a PVC, including reducing or preventing the formation of observable gas checks in calendered films, or other mechanical properties such as tensile strength and/ or glass transition temperature.