Free standing dispersant film

A free standing dispersant film, comprising:

• 19 to 85 wt % of a partially hydrolyzed polyvinyl acetate;
• 5 to 70 wt % of a poly(ethylene oxide), wherein the poly(ethylene oxide) has a weight average molecular weight of 20,000 to 2,000,000 Daltons;
• 1 to 35 wt % of a polyalkylene glycol, wherein the polyalkylene glycol has a weight average molecular weight of 250 to 5,300 Daltons;
• 0.5 to 25 wt % of a plasticizer, wherein the plasticizer is selected from the group consisting of 1,2-ethanediol;
• 1,3-propanediol;
• 1,2-propanediol;
• 1,2,3-propanetriol;
• 1,4-butanediol;
• 1,5-pentanediol;
• 1,6-hexanediol;
• 2,3-butanediol;
• 1,3-butanediol;
• 2-methyl-1,3-propanediol;
• diethylene glycol;
• triethylene glycol;
• and mixtures thereof;
• 2 to 50 wt % of a dispersant polymer, wherein the dispersant polymer is an amphoteric dispersant polymer;
• wherein the amphoteric dispersant polymer consists of a copolymer of an anionic vinyl monomer and a cationic vinyl monomer;
• wherein the anionic monomer is selected from at least one of acrylic acid and methacrylic acid;
• wherein the cationic vinyl monomer is selected from at least one of 2-(dimethylamino)ethyl methacrylate, 2-(diethylamino)ethyl methacrylate and 2-(dipropylamino)ethyl methacrylate;
• 1 to 7.5 wt % of a poly(isobutylene-co-maleic anhydride) copolymer, wherein the poly(isobutylene-co-maleic anhydride) copolymer is at least partially neutralized;
• and
• 0 to 10 wt % of an optional additive.