Plasticized polymers of vinyl acetate

Claim 1

A composition comprising a vinyl acetate polymer or copolymer of between 55 and 100% of vinyl acetate with one or more ethylenically unsaturated nonhalogenated comonomers and from 10 to 100% by weight based on the weight of the polymer, of a polyester having a molecular weight, of from 350 to 1500 derived from the reaction of (i) a polyethylene glycol having a molecular weight up to 500, (ii) an aliphatic alcohol containing from 3 to 6 carbon atoms and (iii) a mixture of dibasic acids or anhydrides comprising a mixture of (a) a phthalic acid or anhydride and (b) an acid or anhydride selected from succinic, glutaric or adipic or any mixture thereof; the dibasic acid or anhydride mixture being reacted with the theoretical amounts of alcohol and glycol needed to effect the reaction with the proviso that the glycol may be reacted with the dibasic acids or anhydrides in amounts ranging from 0-10 mol % below the theoretical amount necessary to effect the reaction to up to 20% in excess of the theoretical amount and the alcohol may be reacted in amounts ranging from 0 to 50 mol % below the theoretical amount to up to 20 mole % in excess of the theoretical amount needed to produce the final product and wherein the dibasic acid or anhydride mixture contains phthalic acid or the anhydride thereof in amounts from 5% to 80% by weight of the mixture.