| abstract |
An aqueous coating agent, containing one or more film-forming water-dilutable or water-soluble epoxy resins with an epoxide equivalent weight of 100 to 10000, one or more water-dilutable or water-soluble polyamines with at least two primary and/or secondary amino groups in the molecule and an equivalent weight of 50 to 500, and optional pigments, fillers and/or other conventional lacquer adjuvants, the ratio of reactive H atoms in the polyamines to the epoxy groups in the epoxy resins being 0.7:1 to 1.5:1 and 5 to 80 wt. % of one or more water-dilutable or water-soluble polyurethane resins with a number average molecular weight (Mn) of 500 to 500000 relative to the sum of the weights of the solids in the epoxy resin and polyamine. |