PROCESS FOR STABILIZING COMPOSITIONS BASED ON VINYL CHLORIDE POLYMERS OR COPOLYMERS USING LACTONIC COMPOUNDS

摘要

The stabilization of polyvinyl chloride resins and polyvinyl chloride resin compositions with novel compositions comprising metal salts of carboxylic acids and an alpha -acyl-lactone of the formula: IMAGE wherein R represents an aliphatic or aromatic radical containing 2 to 30 carbon atoms, R' represents a linear or branched-chain hydrocarbon radical having from 2 to 30 carbon atoms or a divalent cyclic radical having 4 to 10 carbon atoms.