Process for coating metallic surfaces, coating composition, and coatings produced in such a way

Abstract

A process for coating a metallic surface of a metallic substrate comprising applying, an organic, anionically, cationically or radically curable anticorrosive composition, to the metallic surface, wherein said anticorrosive composition is a dispersion or solution containing at least two components that are at least partially anionically, cationically or radically curable, wherein at least one monofunctional monomer or monofunctional oligomer is present, a photoinitiator, and an first organic corrosion inhibitor.

1 - 40 . (canceled) 
     
     
         41 . A process for coating a metallic surface of a metallic substrate comprising applying, an organic, anionically, cationically or radically curable anticorrosive composition, to the metallic surface, wherein said anticorrosive composition consists of a dispersion or solution containing at least two components that are at least partially anionically, cationically or radically curable selected from the group consisting of a monomer, an oligomer and a polymer with a total content in the range from 50 to 95 wt. %,
 wherein at least one monofunctional monomer or monofunctional oligomer is present in an amount of from 1 to 58 wt. %;   from 0.5 to 22 wt. % of at least one photoinitiator for anionic, cationic or/and radical crosslinking if electron beam radiation is not used,   from 0.05 to 6 wt. % of a first organic corrosion inhibitor, and   optionally at least one further organic or/and inorganic corrosion inhibitor with a total content in the range from 0.1 to 12 wt. %,   optionally at least one hardener for a chemical postcure with a content in the range from 0.05 to 8 wt. %,   optionally up to 35 wt. % of an additive,   and optionally water or/and at least one organic solvent in a total content of 0.01 to 5 wt. %, relative in each case to the solids contents in wt. %,   wherein the anticorrosive composition is applied to the metallic surfaces in a wet film thickness in the range from 0.5 to 25 μm; and at least one of anionically, cationically, or radically curing the composition to form an anticorrosive coating on the metal surface, wherein the anticorrosive coating has a dry film thickness in the range from 0.4 to 20 μm and a chemical resistance of over 20 MEK cycles, determined in the MEK test in accordance with ECCA standard T11 with methyl ethyl ketone wherein the coating has a chemical resistance of at least 40 MEK cycles, and   wherein the metallic substrates are coated at a velocity of at least 220 m per minute.