Hexanedioic acid, polymer with 1,4-butanediol, 1,6-diisocyanatohexane, 2,2-dimethyl-1,3-propanediol, 1,2-ethanediamine, 1,6-hexanediol, 3-hydroxy-2-(hydroxymethyl)-2-methylpropanoic acid, 2,2'-iminobis[ethanol] and 1,1'-methylenebis[4-isocyanatocyclohexane], polyethylene-polypropylene glycol mono-Bu ether-blocked, compd. with triethylamine