| abstract |
The subject of the present invention is to provide a water-based metal surface treatment agent, etc., wherein the water-based metal surface treatment agent has a surface treatment film that can be formed between a metal material and a coating film, and can form a coating film, Provides excellent processing adhesion, chemical resistance, and corrosion resistance to metal materials. The above-mentioned problem is solved by the water-based metal surface treating agent of this invention. The aforementioned metal surface treatment agent is characterized in that it contains: more than 10 g / L of specific urethane resin (A); and a fluorine-containing compound (B), which further contains a compound selected from the group consisting of boron, silicon, titanium, and zirconium. At least one element in the group. |