Rhodopas AM 383 Vinyl acetate and maleic ester copolymer. Rhodia Polyvinyl acetate emulsions & derivatives (PVAcā¦) >> Maleated ADHESIVE Non ionic aqueous emulsion of a vinyl acetate and maleic ester copolymer. RHODOPAS AM 383 is characterized at the polymer level by : Very high molecular weight. Internal plasticization. Used for food package film adhesives. Non ionic aqueous emulsion of a vinyl acetate and maleic ester copolymer. Used in adhesives for food packaging.