Organosol polyester paints and process for their preparation

摘要

Organosol polyester lacquers for thick lacquer coatings comprise: (A) 10-30 mass % dissolved, linear and/or slightly branched amorphous polyester(s); (B) 0.5-15 mass % capped polyisocyanate resin(s); and/or (C) 0.5-15 mass % triazine resin(s); (D) 10-40 mass % fine powder with a particle size less than 150 mu m of a high molecular weight crystalline copolyester in suspension, having a molar mass of 10000-50000 g/mole and slow swellability in solvents; (E) 0-20 mass % pigment and inorganic filler; (F) 0-1 mass % catalyst(s); (G) 0-5 mass % additive(s); and (H) 25-45 mass % organic solvent with a b.pt. greater than 160 degrees C. Also claimed are (i) the use of the lacquers as coating materials and (ii) the preparation of thick lacquer coatings by applying these lacquers as a thick cover or primer coatings on standard primer coatings.