31045-37-1 1,4-Benzenedicarboxylic acid, dimethyl ester, polymer with 1,2-ethanediol and 1,3,5-tris(2-hydroxyethyl)-1,3,5-triazine-2,4,6(1H,3H,5H)-trione
31075-20-4 Hexanedioic acid, polymer with 1,6-hexanediol and 1,1-methylenebis4-isocyanatobenzene