1,4-Benzenedicarboxylic acid, polymer with 1,3-dihydro-1,3-dioxo-5-isobenzofurancarboxylic acid and 2,2-dimethyl-1,3-propanediol 37871-48-0 Neopentyl glycol, terephthalic acid, trimellitic anhydride polymer Terephthalic acid, neopentyl glycol, trimellitic anhydride polymer