| abstract |
The invention relates to an aqueous dispersion (P) of at least two different polymer resins (P1) and (P2). (P1) is a copolymer which can be obtained by copolymerizing ethylenically unsaturated monomers in the presence of at least one polyurethane resin that has polymerizable carbon double bonds, (P2) is a polyester which has functional hydroxyl groups and has an acid number of < 25 mg KOH per g of polyester, and (P) can be obtained by a method having at least four steps (1), (2), (3), and (4). The invention also relates to an aqueous coating composition containing the aqueous dispersion (P), to a method for at least partly coating at least one substrate metal surface, which is coated with at least one primer coat, with a topcoat using the aqueous coating composition, and to an at least partly coated substrate which can be obtained using such a method. |