EPOXY-FREE, HEAT CURABLE COATING SYSTEM

摘要

The invention relates to an epoxy-free, heat-curable coating system of binder resin comprising a hydroxylterminated polyester resin with a hydroxyl number of from 20 to 200 mg KOH/g and a glass transition temperature of at least 40.degree.C; a carboxyl-group-containing, reversibly blocked polyisocyanate; a p-hydroxyalkylamide having at least two phydroxyalkylamide groups per molecule; and optionally further additives. The invention also relates to a process for preparing the coating system and to the use thereof. The soobtained epoxy-free, heat-curable coating system can be made by melt-extrusion of all its components. This coating system is toxicologically unobjectionable and can be used to produce weather-resistant protective coatings with mat surfaces.