| 摘要 |
<p>A water-based metal surface treatment agent that is for the surface treatment of metals including aluminum products such a as pre-coated aluminum sheets and gives excellent coating film adhesion, flexibility and acid resistance is provided. The water-based metal surface treatment agent comprising components following (1) to (3): (1) A copolymer, containing in a side chain a diketene or ketoester capable of switching between keto and enol tautomeric forms, and containing at least one hydrophilic side chain containing a cationic group, an anionic group or a nonionic group; (2) An epoxy resin modified with a phosphoric acid type compound; and (3) A water-soluble curing agent.ro</p> |
