Vinyl chloride-vinyl acetate copolymer dissolved in solvent mixture containing aromatic hydrocarbon and pyrrolidone component

Claim 1

A RESIN COMPOSITION COMPRISING A COPOLYMER OF VINYL CHLORIDE AND VINLY ACETATE WHICH IS DIFFCULTLY SOLUBLE IN MONO-NUCLEAR AROMATIOC HYDROCARBON SOLVENTS AND WHICH CONTAINS LESS THAN ABOUT 92% BY WEIGHT OF VINYL CHLORIDE DISSOLVED IN A SOLVENT MEDIUM, THE EFFECTIVE SOLVENT MEDIUM CONSISTING OF A FIRST COMPONENT SELECTED FROM THE GROUP CONSISTING OF 2-PYRROLIDONE, NALIPHATIC HYDROCARBON SUBSTITUTED DERIVATIVES OF 2-PYRROLIDONE HAVING NOT MORE THAN 4 CARBON ATOMS IN THE ALIPHATIC HYDROCARBON RADICAL AND MIXTURES OF THE FOREGOING, AND A SECOND COMPONENT CONSTITUTED BY A LIQUID MONO-NUCLEAR AROMATIC HYDROCARBON SOLVENT SELECTED FROM THE GROUP CONSISTING OF BENZENE, ALKYL BENZENES AND MIXTURES THEREOF, THE SAID FIRST COMPONENT BEING PRESENT IN AN AMOUNT OF AT LEAST 7% BY WEIGHT UP TO 50% BY WEIGHT BASED ON THE COMBINED WEIGHT OF THE SAID FIRST COMAND THE SAID SECOND COMPONENTS WHEN SAID FIRST COMPONENT IS N-METHYL-2-PYRROLIDONE AND SAID FIRST COMPONENT BEING PRESENT IN AN AMOUNT OF AT LEAST 10% ON THE SAME BASIS WHEN SAID FIRST COMPONENT IS A MEMBER SELECTED FROM SAID GROUP OTHER THAN N-METHYL 2-PYRROLIDONE.