| abstract |
PROBLEM TO BE SOLVED: To provide a rust-preventive paint exhibiting excellent adhesiveness and rust-preventive property to galvanized steel such as galvanized steel and zinc alloy-plated steel, and having excellent hot water resistance and abrasion resistance. . A rust preventive paint comprising an aqueous dispersion of an ethylene / unsaturated carboxylic acid copolymer having an unsaturated carboxylic acid content of 10 to 30% by weight, based on a carboxyl group of the copolymer. A rust-preventive paint containing 10 to 60 mol% of a polyvalent metal ion and 50 to 120 mol% of an alkali metal ion and / or ammonium ion, and a metal material, particularly plated steel, which has been rust-proofed with the rust-preventive paint. |