| abstract |
(57) [Summary] [PROBLEMS] Even without using a rust inhibitor containing harmful heavy metals, An aqueous paint capable of forming a coating film having excellent corrosion resistance on an aluminum-plated steel sheet is obtained. SOLUTION: (A) 50 to 100 parts by weight of at least one aqueous resin selected from an aqueous alkyd resin and an aqueous epoxy ester resin, and (B) an aqueous acrylic resin 0 to 50. (D) 5 to 50 parts by weight of calcium ion-exchanged amorphous silica fine particles, based on 100 parts by weight of the total amount of the film-forming resin component consisting of 0 to 30 parts by weight of (C) the aqueous melamine resin and An aqueous coating composition comprising (E) 5 to 50 parts by weight of a phosphate-based rust preventive pigment modified with a magnesium compound and (F) 0.1 to 10 parts by weight of a triazole compound, and this composition. A coated article based on an aluminum-plated steel sheet on which a coating film is formed. |