| 摘要 |
FIELD: chemistry. ^ SUBSTANCE: invention relates to an aqueous anti-corrosion agent for coating metal substrates. The aqueous anti-corrosion agent contains a water-dispersed and/or water-soluble polymerisation product P with covalently bonded ligands A, which form chelating compounds with metal ions freed during corrosion of the substrate and/or surface of the substrate, as well as with cross-linked functional groups B, which can form covalent bonds between themselves, other additional functional groups B' of the polymerisation product P and/or with other functional groups B and/or B' on cross-linking agents V. The polymerisation product P has a polymer base in form of one or more structural elements, selected from a group of polyesters, polyacrylates, polyurethanes, polyolefins, polyatomic alcohols, polyvinyl esters, polyvinylamides and polyalkylene amine. Groups B and B' are (meth)acrylate and ethylacrylate groups, ether and ester vinyl groups, crotonate and cinnamate groups, allyl groups etc. Ligands A are selected from a group comprising urea, amines, amides, imines, imides, pyridines, organosulphur compounds, organophosphorus compounds, organoboron compounds, oximes, acetylacetonates, polyatomic alcohols, acids, phytic acids, acetylenes and/or carbenes. The invention also describes a single- and a two-step method of treating metal substrates using the aqueous anti-corrosion agent described above. ^ EFFECT: coating provides high anti-corrosion protection of metal substrates. ^ 11 cl, 1 tbl, 6 ex |
