Tough, rigid composition of vinyl chloride polymer and rubbery diolefinacrylic ester copolymer

Claim 1

A RIGID, TOUGH, FUSED, INTIMATE, THERMOPLASTIC MIXTURE OF (A) FROM ABOUT 97 TO 65 PARTS OF A VINYL CHLORIDE POLYMER SELECTED FROM THE GROUP CONSISTING OF VINYL CHLORIDE HOMOPOLYMER AND BINARY COPOLYMERS OF VINYL CHLORIDE WITH FROM ABOUT 1% TO 15% OF AN ADDITIONAL MONOETHYLENICALLY UNSATURABLE COPOLYMERIZABLE MONOMER, AND (B) FROM ABOUT 3 TO 35 PARTS OF A RUBBERY BINARY COPOLYMER CONSISTING SOLELY OF A CONJUGATED DIOLEFIN WITH AN ACRYLIC ESTER HAVING THE STRUCTURE CH2=CXCOOR, WHERE X IS SELECTED FROM THE GROUP CONSISTING OF HYDROGEN, METHYL AND CHLORINE RADICALS, AND R IS SELECTED FROM THE GROUP CONSISTING OF ALKYL, ALKOXYALKYL AND CHLOROALKYL RADICALS, THE SAID MIXTURE BEING CHARACTERIZED BY A FLEXURAL MODULUS AT 25* C. OF AT LEAST 100,000 POUNDS PER SQUARE INCH, AND AN IMPACT STRENGTH AT LEAST TWO TIMES GREATER THAN THAT OF THE SAID VINYL CHLORIDE POLYMER ITSELF.