Patent ID: 7767282

Claim:
A sachet or pouch comprising a film that is soluble in cold water wherein the film comprises a hydrolyzed lactonized vinyl acetate terpolymer composition comprising less than about 5 mol % unhydrolyzed vinyl acetate moieties wherein the hydrolyzed lactonized terpolymer is formed by hydrolysis of a terpolymer of vinyl acetate, alkyl acrylate and itaconic acid, said hydrolyzed lactonized vinyl acetate terpolymer comprising vinyl alcohol moieties formed by hydrolysis of the vinyl acetate moieties and lactone moieties formed by transesterification of the alkyl acrylate moieties present in the terpolymer of vinyl acetate, alkyl acrylate and itaconic acid with vinyl alcohol moieties formed by hydrolysis of the vinyl acetate moieties, and further wherein: (i) the alkyl acrylate is present in the terpolymer of vinyl acetate, alkyl acrylate and itaconic acid in an amount of at least about 1 mol % up to about 9 mol %; and (ii) the itaconic acid is present in the terpolymer of vinyl acetate, alkyl acrylate and itaconic acid in an amount of at least about 1 mol % up to about 10 mol %.