Hexanedioic acid, 1,6-dihydrazide, polymers with 5-amino-1,3,3-trimethylcyclohexanemethanamine, 2,2-bis(hydroxymethyl)butanoic acid, 1,4-butanediol, 1,6-diisocyanatohexane, 1,3-dioxolan-2-one, 1,6-hexanediol, hydroxy-terminated hydrogenated polybutadiene and 1,1'-methylenebis[4-isocyanatocyclohexane], compds. with triethylamine