| abstract |
The invention relates to an aqueous coating composition, containing at least one first polymer (A) as a binder, at least one cross-linking agent (B), and at least one copolymer (C) as a second binder, which at least one copolymer can be obtained by copolymerizing ethylenically unsaturated monomers in the presence of a polymerizable polyurethane resin having carbon double bonds, wherein the weight ratio of polymer (A) to polymer (C) is greater than 3.0. The invention further relates to a method for producing a topcoat layer on a metal substrate, comprising applying the coating composition according to the invention to and curing said coating composition on a metal substrate, and a metal substrate that has been coated according to the method according to the invention. |