Aqueous resin dispersion and aqueous coating composition containing said resin dispersion

An aqueous resin dispersion (AD) comprising a resin component (R) comprising at least one di- and/or polyfunctional monomeric primary and/or secondary amine (M) and polyfunctional polymeric organic amines having primary and/or secondary amino groups,

• wherein the resin component (R) has an NH equivalent of 150 to 400 g/mol and a proportion by weight of the at least one di- and/or polyfunctional monomeric organic amine (M) of 5% to 15% by weight in the aqueous resin dispersion (AD), wherein the at least one di- and/or polyfunctional monomeric organic amine (M) is unreacted in the aqueous resin dispersion (AD);
• wherein the polyfunctional polymeric organic amines having primary and secondary amino groups also comprise, in interreacted form,
• (i) at least one di- and/or multifunctional organic epoxy compound, wherein the epoxy compounds have an average epoxy equivalent weight of less than 400 g/mol,
• (ii) at least one monomeric amine (M), and
• (iii) at least one compound X—R wherein X is a functional group reactive toward epoxy groups and R is an organic radical containing polyoxyalkylene units and not containing any further X groups,
• and wherein the at least one monomeric amine (M) consists to an extent of at least 65 mol % of amines consisting of amino groups and hydrocarbon units.