1,3-Isobenzofurandione, polymer with 2,2-dimethyl-1,3-propanediol, 2,5-furandione, 1,2-propanediol and 1,2,3-propanetriol 68227-21-4 Phthalic anhydride, maleic anhydride, glycerin, neopentyl glycol, propylene glycol polymer