Thermoplastic compositions comprising

Claim 1

A THERMOPLASTIC COMPOSITION COMPRISING AN INTIMATE MIXTURE OF (1) AT LEAST 80% BY WEIGHT OF A HIGH MOLECULAR WEIGHT VINYL CHLORIDE POLYMER; (2) UP TO 10% BY WEIGHT OF A COPOLYMER OF 50% TO 25% BY WEIGHT ACRYLONITRILE AND 50% TO 75% OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF STYRENE, METHYLSTYRENE AND CHLOROSTYRENE; AND (3) UP TO 10% BY WEIGHT OF A FIRST AND SECOND 1,3 BUTADIENE-ACRYLONITRILE COPOLYMER, SAID FIRST COPOLYMER CONTAINING 50% TO BELOW 75% POLYMERIZED BUTADIENE BY WEIGHT, AND SAID SECOND COPOLYMER CONTAINING 75% TO 95% POLYMERIZED BUTADIENE BY WEIGHT, THE VINYL CHLORIDE POLYMER BEING TAKEN FROM THE GROUP CONSISTING OF VINYL CHLORIDE HOMOPOLYMER AND COPOLYMERS OF VINYL CHLORIDE WITH A MEMBER OF THE GROUP CONSISTING OF VINYL ACETATE, METHYL ACRYLATE, METHYL METHACRYLATE, ACRYLONITRILE, AND VINYLIDENE CHLORIDE, THE VINYL CHLORIDE PREPONDERATING BY WEIGHT.