51293-73-3 52004-56-5 Hexanedioic acid, 5-amino-1,3,3-trimethylcyclohexanemethanamine, 1,4-butanediol, 1,1'-methylenebis(4-isocyanatocyclohexane) polymer Hexanedioic acid, polymer with 5-amino-1,3,3-trimethylcyclohexanemethanamine, 1,4-butanediol and 1,1'-methylbis(4-isocyanatocyclohexane) Hexanedioic acid, polymer with 5-amino-1,3,3-trimethylcyclohexanemethanamine, 1,4-butanediol and 1,1'-methylenebis(4-isocyanatocyclohexane)