Blend of a vinyl chloride resin, a rubbery diolefin copolymer and a copolymer of acrylonitrile and alkyl methacrylate

Claim 1

A BLEND CONSISTING ESSENTIALLY OF (1) 100 PARTS OF A POLYVINYL RESIN OF THE CLASS CONSISTING OF POLYVINYL CHLORIDE AND COPOLYMERS OF A MIXTURE OF 85 TO 100 PARTS VINYL CHLORIDE AND UP TO 15 PARTS OF AN ETHYLENICALLY UNSATURATED MONOMER THAT IS COPOLYMERIZABLE THEREWITH, (2) 5 TO 20 PARTS OF A RUBBERY COPOLYMER OF A MIXTURE OF 50 TO 90 PARTS OF CONJUGATED DIOLEFIN MONOMER AND 50 TO 10 PARTS OF AT LEAST ONE MONOMER FROM THE CLASS CONSISTING OF ACRYLONITRILE, METHACRYLONITRILE, ALKYL ACRYLATES AND METHACRYLATES HAVING ONE TO THIETEEN CARBON ATOMS IN THE ALKYL GROUP, VINYLIDINE CHLORIDE, METHYLISOPROPENYL KETONE, DIALKYL FUMARATES IN WHICH EACH ALKYL GROUP CONTAINS ONE TO EIGHT CARBON ATOMS, MONOVINYL PYRIDINE, AND METHYL-VINYL KETONE, AND (3) 3 TO 15 PARTS OF A COPOLYMER OF A MIXTURE CONSISTING OF 10 TO 50 PARTS FOF ACRYLONITRILE AND 90 TO 50 PARTS OF AN ALKYL METHACRYLATE WHICH CONTAINS 1 TO 3 CARBON ATOMS IN THE ALKYL GROUP.