Siloxanes and Silicones, di-Me, 3-(2-hydroxyethoxy)propyl group-terminated, polymers with 1,4-butanediol, 1,6-diisocyanatohexane, di-Me carbonate, 1,3-dioxolan-2-one, 1,6-hexanediol, hydrazine, 3-hydroxy-2-(hydroxymethyl)-2-methylpropanoic acid and 5-isocyanato-1-(isocyanatomethyl)-1,3,3-trimethylcyclohexane, compds. with triethylamine