Patent ID: 7470452

Claim:
A process for multi-layer coating of vehicles and vehicle parts which comprises the steps of applying at least two coating layers and curing of the applied coating layers with high energy radiation and moisture; wherein at least one coating layer is formed from a coating composition comprising a resin solids content of at least one polyurethane binder with free-radically polymerizable olefinic double bonds in the form of (meth)acryloyl groups and with hydrolysable alkoxysilane groups and hydroxyl groups, wherein the resin solids content of the coating composition has an equivalent weight of C═C double bonds of 200-2000 and a silicon content of 1-10 wt-%, wherein the silicon is bound in alkoxysilane groups and wherein the step of curing the at least one coating layer comprises irradiation with high energy radiation thereby polymerizing the C═C double bonds via free radical polymerization and exposure to moisture thereby forming siloxane bridges from the alkoxysilane groups.