Blend of synthetic resinous copolymer and rubbery materials

Claim 1

A TOUGH PLASTIC BLEND WHICH IS COMPOSED OF (1) 65 TO 85 PARTS BY WEIGHT OF A POLYMERIC RESIN OF THE CLASS CONSISTING OF RESIN FORMED BY COPOLYMERIZATION OF 90 TO 50 PARTS PER HUNDRED OF THE RESIN OF METHYL METHACRYLATE AND 10 TO 50 PARTS ACRYLONITRILE, AND RESIN FORMED BY COPOLYMERIZATION OF 10 TO 50 PARTS PER HUNDRED OF THE RESIN OF ACRYLONITRILE AND 90 TO 50 PARTS PER HUNDRED OF THE METHYL METHACRYLATE AND STYRENE IN WHICH THERE IS AT LEAST AS MUCH METHYL METHACRYLATE AS STYRENE, (2) 10 TO 20 PARTS BY WEIGHT OF A RUBBERY RANDOM COPOLYMER OF 60 TO 90 PARTS PER HUNDRED OF THE RUBBER COPOLYMER OF A CONJUGATED DIENE AND 40 TO 10 PARTS OF MONOMER OF WHICH ALL BUT UP TO 5 PARTS IS FROM THE CLASS CONSISTING OF ACRYLONITRILE, METHACRYLONITRILE AND ETHACRYLONITRILE, THE BALANCE BEING FROM THE CLASS CONSISTING OF ACRYLONITRILE, METHACRYLONITRILE, ETHACRYLONITRILE, METHYL METHACRYLATE, VINYL PYRIDINE, METHYL VINYL KETONE, VINYLIDENE CHLORIDE AND STYRENE, AND (3) 5 TO 15 PARTS BY WEIGHT OF RUBBER WHICH IS FROM THE CLASS CONSISTING OF NATURAL RUBBER, SYNTHETIC HOMOPOLYMERS OF CONJUGATED DIENES AND COPOLYMERS OF AT LEAST 60 PERCENT OF A CONJUGATED DIENE AND UP TO 40 PERCENT OF AN ETHYLENICALLY UNSATURATED MONOMER OF THE CLASS CONSISTING OF STYRENE, THE MONOAND DI-NUCLEARLY METHYLATED STYRENES, ALPHA-METHYLSTYRENE, METHYL METHACRYLATE, ETHYL ACRYLATE, VINYL PYRIDINE, METHYL VINYL KETONE AND VINYLIDENE CHLORIDE.