Coating film-forming method

Details Coating film-forming method Coating film-forming method

C - Chemistry, Metallurgy

25

D

C25D 13/06 (2006.01) B05D 1/38 (2006.01) B05D 5/04 (2006.01) B05D 7/00 (2006.01) C09D 5/44 (2006.01) C25D 13/04 (2006.01) B05D 5/06 (2006.01)

Patent

CA 2355813

A coating film-forming method comprising a first step which comprises coating a cationic eletrodeposition coating composition (A) containing an electrically conducting agent, followed by washing with water and heat curing and drying to form a cured cationic electrodeposition coating film; a second step which comprises coating such an anionic electrodeposition coating composition (B) that a coating film formed therefrom has a chromatic color or a white color as an achromatic color onto the cured cationic electrodeposition coating film, followed by washing with water, and removing water by preheating or air blowing to form a non-cured anionic electrodeposition coating film; and a third step which comprises coating a topcoating composition (C) thereonto to form a non-cured topcoating film, and heat curing and drying a resulting laminated coating film simultaneously.

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