| 摘要 |
PROBLEM TO BE SOLVED: To provide a cationic electrodeposition coating composition which can reconcile the anticorrosion of an edge portion and the external appearance of a coating film. SOLUTION: The cationic electrodeposition coating composition comprises 3-20 wt.%, based on the solid content of the coating resin, crosslinked resin particles to be obtained by the emulsion polymerization of anα,β-ethylenically unsaturated monomer mixture using an acrylic resin having an ammonium group as the emulsifying agent. Here, the aboveα,β-ethylenically unsaturated monomer mixture may contain 5-20 wt.% poly(meth)acrylate having two or moreα,β-ethylenically unsaturated double bonds in the molecule.
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