1,3-Isobenzofurandione, 4,5,6,7-tetrachloro-, polymer with 1,2-ethanediol, 2,5-furandione and 1,3-isobenzofurandione 66037-26-1 Phthalic anhydride, maleic anhydride, tetrachlorophthalic anhydride, ethylene glycol resin