1,3-Benzenedicarboxylic acid, polymer with 1,3-dihydro-1,3-dioxo-5-isobenzofurancarboxylic acid, 2,2-dimethyl-1,3-propanediol and 2-ethyl-2-(hydroxymethyl)-1,3-propanediol 60450-82-0 Trimethylolpropane, neopentyl glycol, isophthalic acid, trimelliticanhydride polymer