| abstract |
An aqueous polyurethane-urea dispersion, comprising a polyurethane-urea dispersed therein having sulfonate and / or carboxylate groups and side carboxyl groups, wherein an amount of said sulfonate and / or carboxylate groups is 1.5 to 15 mmol / 100 g; said side carboxyl groups are introduced by an aminocarboxylic acid having an amino functionality of 2-4; an amount of such side carboxyl groups is 1.5 to 9.5 mmol / 100 g, based on the solid polyurethane-urea components. |