Patent ID: 8048954

Claim:
An aqueous polyurethane-urea dispersion consisting of the following structural components: A) 10 weight % to 40 weight % of one or more aliphatic polyisocyanate compounds; B) 40 weight % to 70 weight % of at least one polyhydroxy compound with a molar mass M n in the range of from 400 g/mol to 8000 g/mol; C) 19 weight % to 50 weight % of a monofunctional polyethylene-glycol-containing component which is reactive with respect to isocyanate groups, the polyethylene-glycol content of which component amounts to at least 50 weight % and has a molar mass M n in the range of from 1200 g/mol to 3000 g/mol; D) 0.5 weight % to 10 weight % of at least one compound selected from the group consisting of ethylenediamine, 1,2-diaminopropane, 1,3-diaminopropane, 1,4-diaminobutane, 1,6-diaminohexane, isophoronediamine, isomer mixture of 2,2,4- and 2,4,4-trimethylhexamethylenediamine, 2-methylpentamethylenediamine, diethylenetriamine, 1,3- xylylenediamine, 1,4-xylylenediamine, α,α,α′,α′-tetramethyl-1,3- xylylenediamine, 1,4-xylylenediamine, 4,4-diaminodicyclohexylmethane, dimethylethylenediamine, hydrazine, adipic acid dihydrazide, 3-amino-1-methylaminopropane, 3-amino-1-ethylaminopropane, 3-amino-1-cyclohexylaminopropane, 3-amino-l-methylaminobutane, N-aminoethylethanolamine, ethanolamine, 3-aminopropanol, neopentanolamine, and diethanolamine; E) 0.5 weight % to 10 weight % of a polyhydroxy compound with a molar mass M n in the range of from 62 g/mol to 320 g/mol and with a functionality of 1 or greater; and F) 0 weight % to 10 weight % of one or more auxiliary substances or additives selected from the group consisting of anti-oxidants, UV stabilisers, flow-control agents, biocides, anti-static agents, adhesion promoters, or mixtures thereof; wherein the sum of said structural components A), B), C), D), E), and F) equals 100 weight %.