actinic radiation

BASF Coatings AG has obtained an aqueous coating material curable physically, thermally and with actinic radiation comprised of at least one stabilized polyurethane, as binder at least one effect pigment or a mixture of a color pigment and an effect pigment, and at least one transparent or colorless powder present in an amount of 0.

3], wherein the solventborne coating material is curable by one of physically, thermally or thermally and with actinic radiation, and components are present in a combination such that an optical effect coating prepared from the solventborne coating material does not exhibit clouding.

The method entails applying at least one powder coating dispersion to the substrate to form a film, and then curing the film by at least one of thermally and with actinic radiation, wherein the powder coating dispersion comprises a binder, a crosslinking agent, oxalic acid and a polyvalent inorganic acid.