Cationic water-dilutable binders comprising a water-soluble bismuth salt or chelate complex B comprising bismuth ions and an organic acid-functional moiety, and a chain-extended epoxy-amine adduct EA which comprises moieties derived from - epoxide compounds E2 having at least two epoxide groups per molecule, - low molar mass epoxide compounds E3 having two epoxide groups per molecule, and a molar mass of from 170 g/mol to 800 g/mol, - amidoamines A41 having at least one amide group and at least one amino group, made from amines A1 having at least two amino groups per molecule, and from three to twenty carbon atoms, selected from the group consisting of at least two primary amino groups per molecule, at least one primary and at least one secondary amino group per molecule, and at least two secondary amino groups per molecule, and a fatty acid A4 which has from six to thirty carbon atoms, - one or more of - further amines A1 having at least two amino groups per molecule, and from three to twenty carbon atoms, selected from the group consisting of at least two primary amino groups per molecule, at least one primary and at least one secondary amino group per molecule, and at least two secondary amino groups per molecule, - an amine A2 which has from three to twenty carbon atoms and at least one secondary amino group per molecule, - an amine A3 having from four to twenty carbon atoms and at least one tertiary, and at least one primary amino group per molecule, - fatty acids A4 having from six to thirty carbon atoms, and one carboxylic acid group, - phenolic compounds A5 having from six to twenty carbon atoms and at least two phenolic hydroxyl groups, and - optionally: epoxide compounds E1 having on average at least one, and less than two, epoxide groups per molecule. - epoxide compounds E2 having at least two epoxide groups per molecule, - low molar mass epoxide compounds E3 having two epoxide groups per molecule, and a molar mass of from 170 g/mol to 800 g/mol, - amidoamines A41 having at least one amide group and at least one amino group, made from amines A1 having at least two amino groups per molecule, and from three to twenty carbon atoms, selected from the group consisting of at least two primary amino groups per molecule, at least one primary and at least one secondary amino group per molecule, and at least two secondary amino groups per molecule, and a fatty acid A4 which has from six to thirty carbon atoms, - one or more of - further amines A1 having at least two amino groups per molecule, and from three to twenty carbon atoms, selected from the group consisting of at least two primary amino groups per molecule, at least one primary and at least one secondary amino group per molecule, and at least two secondary amino groups per molecule, - an amine A2 which has from three to twenty carbon atoms and at least one secondary amino group per molecule, - an amine A3 having from four to twenty carbon atoms and at least one tertiary, and at least one primary amino group per molecule, - fatty acids A4 having from six to thirty carbon atoms, and one carboxylic acid group, - phenolic compounds A5 having from six to twenty carbon atoms and at least two phenolic hydroxyl groups, and - optionally: epoxide compounds E1 having on average at least one, and less than two, epoxide groups per molecule. - further amines A1 having at least two amino groups per molecule, and from three to twenty carbon atoms, selected from the group consisting of at least two primary amino groups per molecule, at least one primary and at least one secondary amino group per molecule, and at least two secondary amino groups per molecule, - an amine A2 which has from three to twenty carbon atoms and at least one secondary amino group per molecule, - an amine A3 having from four to twenty carbon atoms and at least one tertiary, and at least one primary amino group per molecule, - fatty acids A4 having from six to thirty carbon atoms, and one carboxylic acid group, - phenolic compounds A5 having from six to twenty carbon atoms and at least two phenolic hydroxyl groups, and - optionally: epoxide compounds E1 having on average at least one, and less than two, epoxide groups per molecule.