Application of epoxidos, combination of stabilizers, the application of such combinations, as well as masses of plastic molding the stabilized

摘要

The use of epoxides, solid at ambient temperature, of ethylene glycol diesters of technical-grade mixtures of unsaturated monocarboxylic acids having a high content of monounsaturated C18- to C22-monocarboxylic acids as stabilisers or costabilisers for plastics based on PVC or PVC copolymers, in particular rigid PVC, results in favourable properties in the plastics and during the preparation of costabiliser combinations containing metal soaps if the epoxides have been prepared by epoxidation of the glycol diesters of mixtures of monocarboxylic acids having the following composition: a) at least 80% by weight of one of the monocarboxylic acids from the group formed by monounsaturated C18- to C22-fatty acids, and b) at most 20% by weight of monocarboxylic acids selected from the group formed by saturated, other monounsaturated and more than monounsaturated C14-C22-fatty acids, the content of more than monounsaturated monocarboxylic acids being at most 9% by weight.