Patent ID: 7470451

Claim:
A binder component comprising (a) at least one substance selected from the group consisting of epoxy compounds, amino compounds having at least two amino groups, hydroxy compounds having at least two OH groups, mercapto compounds having at least two SH groups, isocyanates having at least two NCO groups and (b) at least one compound having chelating properties wherein the at least one compound having chelating properties comprises from about 1 to about 25% by weight of said binder component and comprises a compound of the general formula I, II or III in which A is Y or X-Y, and Y is NH 2 , NHR 8 or SH, and X is a linear or branched alkyl radical having 1 to 22 carbon atoms, and R 1 , R 2 , R 3 , R 4 , R 5 , and in formulae II and III, R 6 and R 7 , independently of one another, are H, SO 3 H, OSO 3 H, OP(O)(OH) 2 ,P(O)(OH) 2 , P(O)HOH, COOH, OH, NH 2 , NHR 8 , C(O)R 8 , CN or NO 2 , in which R 8 is hydrogen or a linear or branched, saturated or unsaturated aliphatic hydrocarbon radical having 1 to 10 carbon atoms, or two adjacent radicals from R 1 to R 7 together form an aromatic or heteroaromatic ring, at least two of the radicals R 1 to R 7 not being H or part of an aromatic or heteroaromatic ring system, and the remaining radicals being arranged such that the compound of the general formula I, II or III binds to a divalent or polyvalent metal ligand in chelate form.