Scripset 640 Styrene-maleic anhydride copolymer Hercules Vinyl >> Polystyrene & Styrene Copolymers Inks Coatings >> Solventborne Coatings >> Waterborne Printing Inks & Varnishes Scripset ® Resins (Styrene Maleic Anhydride Copolymers) as a starch modifier in coatings to give increased water resistance, as an alkali removal component in water and organic-based coatings, as an antiblock component and a solvent in coatings, and as a binder component in inks and photoresist coatings. Scripset® 640 is a copolymer of styrene and maleic anhydride esterified with butyl methyl ester Styrene/maleic anhydride copolymer, esterified with butyl methyl ester. Used as a starch modifier in coatings to give increased water resistance, as an alkali removal component in water and organic-based coatings, as an antiblock component and a solvent in coatings, and as a binder component in inks and photoresist coatings.