1,2,4-Benzenetricarboxylic acid, cyclic 1,2-anhydride, polyester with adipic acid, 2-(hydroxymethyl)-2-methyl-1,3-propanediol and 2,2,4-trimethyl-1,3-pentanediol 33807-61-3 Trimethylpentanediol, adipic acid, trimellitic anhydride, trimethylolethane polymer