Patent ID: 9404019
Filing Date: 2016-08-02
CPC Classification: C08G,C08L,C09D,C14C,Y10T

Claim Text:
1. A process for coating a flexible sheet-like substrate comprising coating the substrate with an aqueous polyurethane-polyurea dispersion prepared by A) a NCO-containing polyurethane prepolymer, wherein the prepolymer is prepared by reacting B) the still free NCO groups of the prepolymer having been reacted with isocyanate-reactive monoamines, polyamines, hydrazine and/or hydrazides sufficient for an arithmetic ratio of the isocyanate-reactive NH groups to the NCO groups in the range from 0.7 to 1.2; wherein the substrate is leather or artificial leather: and wherein in the coating step the dispersion is not applied as a foam, and wherein the C