Curable and use of thermally curable aqueous polyurethane dispersions and the dispersion in the Uv rays

(57) Abstract: having at least one C = C-double bond polymerizable by UV radiation, compounds bound by polyisocyanate, having a molecular weight of less than 500 g / mol, aliphatic diols introduced by isocyanate , carboxylic acid or sulfonic acid groups and / or salts thereof, free hydroxyl with a group, containing a compound having the compound and blocked isocyanate groups bound by isocyanate curable by UV rays and thermally curable aqueous polyurethane dispersions such. The aqueous polyurethane dispersion, the thermal stability of the support, is suitable for coating for example metal support, it may be used advantageously automotive coatings.