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 PLASTICS SUBSTRATES AND/OR OF COMMERCIAL VEHICLES

摘要

The present invention relates to coating material compositions comprising at least one polyhydroxyl group-containing compound (A), at least one polyisocyanate group-containing compound (B) having free and/or blocked isocyanate groups, and at least one catalyst (D) based on a zinc-amidine complex which is preparable by reaction of 1.0 moles of at least one zinc(II) biscarboxylate with 2.0 moles of at least one amidine; ;where 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 radical, and R₂ and R₄ being an alkyl radical or an aryl radical,characterized in that the coating material composition further comprises at least one monomeric aromatic, optionally substituted carboxylic acid (S) whose carboxyl group is in conjugation with a π-electron system.