| 摘要 |
An electrodeposition coating composition comprising a fluorine-containing copolymer having an anionic functional group, a curing agent and water, said copolymer comprising: (a) 20 to 80% by mole of the structural unit of the formula (1): -CFX-CF2-(1) (b) 5 to 60% by mole of the structural unit of the formula (2): <IMAGE> (2) (c) 0 to 40% by mole of the structural unit of the formula (3): <IMAGE> (3) (d) 0 to 40% by mole of the structural unit of the formula (4): <IMAGE> (4) the total amount of the structural units (a), (b), (c) and (d) being 100% by mole. The composition of the invention can be baked to substrates at a low temperature in comparison with compositions containing conventional fluorine-containing copolymers, and the films obtained by electrodepositing the composition are excellent in gloss, weatherability, adhesion to the substrates, alkali resistance and smoothness.
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