| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a new metal surface treatment agent capable of not only providing excellent corrosion resistance on a metal material surface but also uniformly forming a coating without having thickness unevenness on the metal material surface and forming a metal material excellent in appearance without spoiling even a metallic luster color.SOLUTION: The metal surface treatment agent includes an organic phosphonic acid polymer and organic phosphonic acid.</p> |
