| 摘要 |
The present invention provides a non-chromium metal surface treating agent which has excellent adhesion with a coating and corrosion resistance, and also has excellent workability and stability. A metal surface treating agent comprising a water-soluble zirconium compound, a water-soluble or water-dispersant acrylic resin and a water-soluble or water-dispersant thermosetting crosslinking agent, wherein said water-soluble zirconium compound has a zirconium content of 500 to 15000 ppm on a mass basis, said acrylic resin has an acid value of solid matter of 150 to 740 mgKOH/g, a hydroxyl value of solid matter of 24 to 240 mgKOH/g, and a solid matter content of 500 to 30000 ppm on a mass basis, and said thermosetting crosslinking agent has a solid matter content of 125 to 7500 ppm on a mass basis.
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