The invention relates to a self-crosslinking, high-molecular polyurethane dispersion based on oxidatively drying diols and/or triols, and consisting of the reaction constituents (A) of an unsaturated fatty acid constituent for oxidative drying, (B) a polyol constituent, (C) a polyisocyanate constituent, (D) a solvent constituent, (E) a neutralisation constituent, (F) a siccative constituent, (G) a chain lengthening constituent, and water. The advantages of said polyurethane dispersion are the technically simple production thereof, whereby the properties of the polyurethane dispersion and the polyurethane films can be tailor-made by means of the polyol constituents, in addition to the excellent drying capacity thereof, and the other good application technology properties thereof such as hardness and chemical resistance during the use of the binding agent for high-grade lacquers and coatings.