| 摘要 |
A cationic electrodeposition coating composition containing no heavy metal-based anticorrosive agents such as lead compounds, and which is capable of forming a coating film with a high corrosion resistance. The composition contains 0.5 to 20% by weight of a compound having an N-substitued benzoxazine ring represented by formula (1), relative to a resin solid matter, and an unsaturated hydrocarbon group-containing sulfide-modified epoxy resin as a base resin: wherein R is a hydrocarbon group having 1 to 8 carbon atoms.
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