Process for producing coatings on metal surfaces

摘要: Anti-corrosive coatings on surfaces of metals other than aluminium, especially galvanised steel, are produced by drying and heating a water-based coating agent which contains chromium(VI) water-soluble or water-dispersible layer-forming organic polymer, the used additionally containing compound boiling point above 100 DEG C, having at least one -CH2OH group and/or =CHOH - if only these groups is present in molecule ether (-O-). Organic compounds from comprising ethylene glycol, diethylene triethylene glycol monomethyl ether, propylene dipropylene butanediol, hexanediol glycerol preferred concentration 0.1 to 20 g/l.