Paint system for a corrosion-resistant and impact-resistant finish

摘要

The paint system comprises a primer and a topcoat. The primer contains a binder based on epoxy resin/polyisocyanate, epoxy resin/polyamine or a moisture-curing polyisocyanate, zinc dust and solvent; the topcoat contains a binder based on acrylate polyol + polyester polyol/polyisocyanate. The paint system has superior multistone chipping resistance and corrosion resistance to that of a paint with phosphation and cathodic electrodeposition priming and is therefore suitable for use in the underfloor area of motor vehicles.