摘要 |
PROBLEM TO BE SOLVED: To provide a water-based coating composition capable of keeping a corrosion prevention effect over a long period by improving the sacrifice corrosion prevention effect with zinc and preventing the intrusion of corrosive factors such as water. SOLUTION: The water-based coating composition dilutable with water contains zinc powder and aluminum powder and is composed mainly of a water-soluble or hydrolyzable silane coupling agent containing an amino group, wherein the content of the silane coupling agent having an amino group is≥1 wt.% based on the zinc. COPYRIGHT: (C)2008,JPO&INPIT
|