| abstract |
An aqueous coating composition capable of forming a coating film excellent in storage stability of a coating material and having excellent corrosion resistance, water resistance, and the like, and a coating method using the composition are provided. SOLUTION: (A) 1 to 20 parts by mass (solid content) of a nitrogen-containing compound and (C) chromium and lead-free prevention with respect to 100 parts by mass (solid content) of an aqueous film-forming resin An aqueous coating composition containing 1 to 80 parts by mass of a rust pigment is applied to the surface of a metal substrate or an old painted surface on the metal substrate. The anticorrosive pigment (C) includes at least one metal selected from Mg, K, Ca, Ba, Zn and Al, phosphate, phosphite, polyphosphate, molybdate, phosphomolybdic acid. At least one selected from a salt, a metaborate and a cyanamide salt can be used. [Selection figure] None |