1,3-Butanediol, phthalic anhydride, adipic acid, trimethylolethane polymer 29295-79-2 Hexanedioic acid, polymer with 1,3-butanediol, 2-(hydroxymethyl)-2-methyl-1,3-propanediol and 1,3-isobenzofurandione Trimethylolethane, phthalic anhydride, 1,3-butanediol, hexanedioxicacid polymer