PROCESS FOR THE PREPARATION OF COATINGS WITH SPECIFIC SURFACE PROPERTIES

摘要

A process for the preparation of powder coatings with a controlled surface appearance comprising the steps of applying a powder coating composition onto the substrate surface comprising 1 to 95 wt % of at least one hydrophobic agent, irradiating the applied powder coating composition with high energy radiation having a UV dose in a range of 100 to 5000 mJ/cm² under near-ambient temperature, fusing, melting and flowing out the particles of the powder coating composition by increased temperature to a molten coating, and curing the molten coating; the process according to the invention makes it possible to provide coatings with a controlled surface appearance as well as to provide coatings having a high mechanical and outdoor stability without a change in formulation of the powder coating composition.