Hexanedioic acid, polymer with N1-(2-aminoethyl)-1,2-ethanediamine, 1,4-butanediol, 2,2-dimethyl-1,3-propanediol, 1,2-ethanediamine, 2-ethyl-2-(hydroxymethyl)-1,3-propanediol, 1,6-hexanediol, hydrazine, 3-hydroxy-2-(hydroxymethyl)-2-methylpropanoic acid and 1,1'-methylenebis[4-isocyanatocyclohexane], compd. with N,N-diethylethanamine