1,3-Isobenzofurandione, polymer with 2,5-furandione and 2,2'-oxybis(ethanol) 2,2'-Dihydroxydiethyl ether, butenedioic anhydride, phthalandione polymer 26123-45-5 37229-20-2 Diethylene glycol, maleic anhydride, phthalic anhydride polymer Maleic anhydride, phthalic anhydride, diethylene glycol terpolymer PN-1 Resin Phthalic anhydride, maleic anhydride, diethylene glycol polymer Phthalic anhydride, polymer with maleic anhydride and diethylene glycol Polymer of diethylene glycol, phthalic anhydride, maleic anhydride