Electrodeposition coating composition excellent in throwing power, aqueous electrodeposition coating, electrodeposition coating method and electrodeposition coating product

摘要

PPROBLEM TO BE SOLVED: To provide an electrodeposition coating composition providing appearance uniformity satisfactory to very sever requirement on the appearance in a field of an electronic equipment housing, to provide a water-based electrodeposition coating material, to provide an electrodeposition coating method and to provide an electrodeposition coated product. PSOLUTION: The electrodeposition coating composition contains (A) 30-80 wt.% of a (meth)acrylic resin polymerized in a solvent containing a nonprotonic polar solvent, having anionic throwing power, and also having 1,000-40,000 of a weight average molecular weight, (B) 10-60 wt.% of an amino resin, and (C) 1-30 wt.% of oxybismuth tetrachloride. The electrodeposition coating is carried out by using the water-based electrodeposition coating material obtained by dispersing the electrodeposition coating composition in water by adding an amine-based neutralizing agent. PCOPYRIGHT: (C)2011,JPO&INPIT