1,3-Benzenedicarboxylic acid, polymer with 1,3-butanediol, hexanedioic acid, 1,6-hexanediol, 5-isocyanato-1-(isocyanatomethyl)-1,3,3-trimethylcyclohexane and 1,1'-methylenebis(4-isocyanatocyclohexane) 81506-51-6