Gasket compositions comprising polyvinyl chloride and vinyl ester interpolymers

Claim 1

A CONTAINER CLOSURE COMPRISING A CAP ADAPTED TO BE MECHANICALLY ATTACHED TO A CONTAINER OPENING AND A RUBBERY GASKET POSITIONED THEREIN TO REGISTER WITH THE LIP OF THE CONTAINER, SAID GASKET COMPRISING A PLASTISOL OF A VINYL CHLORIDE POLYMER CONTAINING AN INCOMPATIBLE AMOUNT OF ABOUT 5 TO 10 WEIGHT PERCENT OF A NON-VOLATILE, NORMALLY LIQUID PROCESSING AID SELECTED FROM THE GROUP CONSISTING OF A PARAFFINIC PETROLEUM OIL AND AN EPOXIDIZED GLYCERIDE AND 0.5 TO 2.0 WEIGHT PERCENT OF A LUBRICANT SOLUBLE IN SAID LIQUID PROCESSING AID, SID LUBRICANT COMPRISING A NON-VOLATILE NORMALLY VISCOUS LIQUID INTERPOLYMER OF AT LEAST TWO VINYL ESTERS OF A C8 TO C22 SATURATED MONOCARBOXYLIC ALIPHATIC ACID AND VINYL ESTER OF A SATURATED MONOCARBOXYLIC FATTY ACID HAVING 2 TO 6 CARBON ATOMS IN THE MOLECULE.