Coating composition for use in aqueous multi-coating systems in

(57) Abstract: The present invention relates to a coating composition for use in multilayer coating systems in this case, a) coating formulation, as an adhesive, 10 to 60 of the acid value, and 4000 25000 preferably have a number average molecular weight of 8,000 to 25,000, and contain water-dilutable polyurethane resins, and, aa) a polyester polyol and / or polyether polyol having a number average molecular weight of 400 to 5000 or such, mixtures of polyester polyols and / or polyether polyols, bb) a mixture consisting of polyisocyanates or polyisocyanate, cc) at least one group reactive toward isocyanate groups, and at least one group that allows anion formation compounds having in the molecule, or it from such compounds Mixture, and optionally, dd) having a molecular weight of 40 to 400, an organic compound containing hydroxyl groups and / or amino groups, or a mixture consisting of such compounds, react with each other, and the resulting reaction product There may be manufactured by being at least partially neutralized, and b) contains a pigment and / or filler, in this case, the ratio between the adhesive and the pigment is 0.5: 1 to 1.5: 1.