Composition for making odorless, nonexuding vinylidene chloride copolymer film

Claim 1

AN EXTRUDABLE COMPOSITION CONSISTING ESSENTIALLY OF A COPOLYMER OF FROM 95 TO 70 PERCENT VINYLIDENE CHLORIDE AND 5 TO 30 PERCENT VINYL CHLORIDE AND FROM 3.5 TO 8 PERCENT IN THE AGGREGATE, BASED ON THE WEIGHT OF COPOLYMER, OF: (A) FROM 2 TO 5.5 PERCENT OF A COMPATIBLE, AT LEAST PARTIALLY AROMATIC, ESTER PLASTICIZER FOR THE COPOLYMER, SELECTED FROM THE GROUP CONSISTING OF THE ALKYL PHTHALYL ALKYL GLYCOLATES WHEREIN EACH ALKYL GROUP CONTAINS FROM 1 TO 4 CARBON ATOMS, THE MONO-ALKYL DIARYL PHOSPHATES WHEREIN THE ALKYL GROUP CONTAINS FROM 4 TO 12 CARBON ATOMS, AND THE ALKYL PHTHALATES HAVING FROM 4 TO 8 CARBON ATOMS IN THE ALKYL GROUPS, (B) FROM 1 TO 2.5 PERCENT OF AN ESTER OF SALICYLIC ACID IN WHICH THE NON-SALICYLIC ESTERIFYING RADICAL IS AROMATIC, AND (C) FROM 0.5 TO 1.5 PERCENT OF AN EPOXIDIZED VEGETABLE OIL WHICH IS A NEUTRAL GLYCERIDE, FREE FROM HYDROXYL GROUPS, CONTAINING AN AVERAGE OF 3 TO 5 OXIRANE RINGS PER MOLECULE, HAVING A MOLECULAR WEIGHT FROM ABOUT 900 TO 1200, AND YIELDING ON ALKALINE HYDROLYSIS HYDROXY FATTY ACIDS HAVING AVERAGE NEUTRALIZATION EQUIVALENTS IN THE RANGE FROM ABOUT 300 TO ABOUT 380.