| 摘要 |
<p>Coating composition in the form of a solution, comprises at least one polyurethane-urea, which is terminated by a copolymer unit of polyethylene oxide and poly-4-12C-alkylene oxide. Independent claims are also included for: (1) producing the polyurethane urea solution, comprising (i) reacting a polycarbonate polyol, a polyisocyanate and a monofunctional polyoxyalkylene ether and optionally a polyol in a melt or in the presence of a solvent in solution, until all the hydroxy groups are used, (ii) adding further solvent and optionally adding the dissolved diamine or the optionally dissolved amino alcohol, and (iii) optionally blocking the remaining residue of isocyanate groups by a monofunctional aliphatic amine after reaching the target viscosity; and (2) a coating on a substrate obtained by applying the coating composition to the substrate and drying.</p> |
