polyurethane coating material composition, multistage coating methods using these coating material compositions, and also the use of coating material composition as transparent coating material and pigmented coating material, and the application of the coating method for refinishing the car and / or for the coating of plastic substrates and / or utility vehicles

摘要

polyurethane coating material composition, multistage coating methods using these coating material compositions, and also the use of coating material composition as transparent coating material and pigmented coating material, and the application of the coating method for refinishing the automobile and / or for coating plastic substrates and / or utility vehicles the present invention relates to coating material compositions comprising at least one compound containing a polyhydroxyl group (a), at least one compound containing a polyisocyanate group (b), with free and / or blocked isocyanate groups, and at least one catalyst (d) based on nor a zinc amidine complex which is preparable by reaction of 1.0 mol of at least one zinc biscarboxylate (ii) with 2.0 moles of at least one amidine wherein r ~ 5 ~ = hydrogen and r ~ 1, r ~ 2 ~, r ~ 3 ~, and r ~ 4 each are one r The same or different additives, R 1 and R 3 being hydrogen or an alkyl radical or an aryl radical, R 2 and R 4 being an alkyl radical or an aryl radical, characterized in that the composition of the The coating further comprises at least one optionally substituted aromatic monomeric carboxylic acid (s) whose carboxyl group is in conjunction with a tt electron system. The present invention further relates to multi-stage coating methods using these coating material compositions, and also the use of the coating material compositions as the transparent coating material, and the application of the automobile refinishing coating method. and / or for the coating of plastic substrates and / or utility vehicles.