| abstract |
The present invention relates to a method of coating a metal surface with an aqueous composition, wherein the composition comprises a) to f) in addition to water, the metal surface is in contact with the aqueous composition, and the polymer film is coated with 0.01 to over the metal surface. It is formed with a film thickness in the range of 10 μm:n n n a) as main components, polymers, copolymers, block copolymers based on synthetic resins selected from the group consisting of polycarbonates, polyurethanes, ionomers, poly (meth) acrylates, polyesters, polyethers and / or polystyrenes One or more synthetic resins, comprising one or more water soluble and / or water dispersible synthetic resins in the form of polymers and / or graft copolymers in an amount of 70 to 100% by weight of the synthetic resin (s) in the organic film former. An organic film former comprising: an organic film former having a content of at least 10% by weight of polycarbonate and polyurethane, respectivelyn n n b) one or more long chain alcohols as film-forming aids for organic film formers,n n n c) at least one crosslinker,n n n d) one or more lubricants, andn n n e) at least one inorganic compound in the form of A) at least one substance based on silane, silanol and / or siloxane, and / or B) an average particle diameter in the range of 0.005 to 0.3 [mu] m as measured by a scanning electron microscope, Andn n n f) optionally at least one organic corrosion inhibitor, at least one organic solvent and / or at least one additive.n n n The invention also relates to a corresponding aqueous composition. |