POLYURETHANE COATING AGENT COMPOSITION, MULTISTAGE COATING METHOD USING SAID COATING AGENT COMPOSITIONS, AND USE OF THE COATING AGENT COMPOSITIONS AS CLEAR COATING OR PIGMENTED COATING MATERIAL AND USE OF THE COATING METHOD FOR AUTOMOTIVE REPAIR PAINTING AND/OR FOR COATING PLASTIC SUBSTRATES AND/OR COMMERCIAL VEHICLES

摘要

The present invention relates to coating agent compositions comprising at least one compound (A) containing polyhydroxyl groups, at least one compound (B) containing polyisocyanate groups, said compound having free and/or blocked isocyanate groups, and at least one catalyst (D) based on a zinc amide complex that can be produced by reacting 1.0 moles of at least one zinc (II) biscarboxylate with 2.0 moles of at least one amidine, wherein R₅ = hydrogen and R₁, R₂, R₃, and R₄ are each identical or different radicals, R₁ and R₃ being hydrogen or an alkyl radical or an aryl rest, and R₂ and R₄ being an alkyl radical or an aryl radical, characterized in that the coating agent composition additionally comprises at least one monomeric aromatic, optionally substituted carboxylic acid (S), the carboxyl group thereof being in conjugation with an n-electron system. The invention further relates to a multistage coating method using said coating agent compositions, and to the use of the coating agent compositions as clear coating material and the use of the coating method for automotive repair painting and/or for coating plastic substrates and/or commercial vehicles.