Use of polyamine- and/or polyalkanolamine-based carboxylic acid derivatives in aqueous polyurethane dispersions

An aqueous polyurethane dispersion, comprising polyamine- and/or polyalkanolamine-based carboxylic acid derivatives obtainable by a process consisting of reacting one or more polyamines selected from the group consisting of diethylenetriamine, triethylenetetraamines, tetraethylenepentamines, pentaethyleneheptaamine, dipropylenetriamine, tripropylenetetraamine, spermine, spermidine, and N-alkylated or N-methylated derivatives of these compounds, and/or one or more polyalkanolamines selected from the group consisting of polydipropanolamine, polydiisopropanolamine, polytriethanolamine, polytripropanolamine, polytriisopropanolamine, and polyetheramine, with at least one acyl group donor comprising rapeseed oil acid, soya fatty acid, sunflower fatty acid, peanut fatty acid, palmitic acid, stearic acid, or tall oil fatty acid, wherein the solids content of the dispersion is in the range of 20-70% by weight based on the overall dispersion, and wherein the concentration of the polyamine- and/or polyalkanolamine-based carboxylic acid derivatives is in the range of 0.2-20% by weight based on the total weight of the aqueous polyurethane dispersion.