Basf Se Corporation

Judith Pietschmann

Erich Beck

Klaus Menzel

The present invention relates to a method for coating light alloy rims, to coating materials for use in this method, and to the coated light alloy rims obtained in this way. A primer layer, a base coat layer, and a clear coat layer are applied to a machined light alloy rim blank. The primer layer includes a radiation-curable coating material having an acid number of 10 to 120 mg KOH/g. The clear coat layer has a double-bond density of free-radically polymerizable reactive groups per unit mass of coating material of at least 1 mol/kg. The coating materials can be cured by radiation.

Method for coating light alloy rims

Described is a method for coating light alloy rims, coating materials for use in this method, and the coated light alloy rims obtained in this way. More specifically, described is a method for coating light alloy rims with at least three layers comprising a primer layer (A), a base coat layer (B), and a clear coat layer (C), each of which are a layer of different coating materials. The method comprises providing a substrate; applying the primer layer (A) directly to the substrate; applying the base coat (B) layer; applying the clear coat layer (C); and curing the layers of different coating materials by high-energy radiation.

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Solothurn, Switzerland

Judith Pietschmann