| 摘要 |
PROBLEM TO BE SOLVED: To solve the defect of discoloration with the use of a cationic electrodeposition paint in the electrodeposition of plated products (for example, silver plating and copper plating) susceptible to the influence of discoloration and failure of external appearance and to use an amino resin having no problem of toxicity and discoloration as a crosslinking agent. SOLUTION: A benzoquanamine resin composition which is used comprises 3.7-4.0 mol bonded formaldehyde, not more than 0.1 mol imino group, not more than 0.2 mol hydroxymethyl group, 1.8-2.0 mol methoxymethyl group, 1.3-1.4 mol butoxymethyl group, and 0.2-0.4 mol carboxyl group per mol of benzoquanamine. COPYRIGHT: (C)2009,JPO&INPIT |
