C - Chemistry – Metallurgy – 25 – D
Patent
C - Chemistry, Metallurgy
25
D
C25D 13/06 (2006.01) B05D 7/00 (2006.01) C08G 18/08 (2006.01) C08G 18/12 (2006.01) C09D 151/00 (2006.01)
Patent
CA 2162210
This invention provides a process to form a coated film characterized in that, after a cationically electrodepo-sition paint is applied on a metal-made article to be coated and is heat-cured, the surface of the resulting electrodepo-sition coated film is coated with an aqueous primer, which is mainly composed of such a thermoplastic polyurethane resin as is produced by subjecting a carboxyl group-containing urethane prepolymer to chain extension in the presence of an aqueous medium, and, successively, with an aqueous base paint, and, next, with a clear paint, and that the resulting three-layer coated films are heated and are thereby cured simultaneously. By this process, there can be formed a multi-layer coated film excellent in chipping-resistance, corrosion-resistance, weatherabili- ty and physical performances.
Kasari Akira
Kato Tsugio
Kunikiyo Takumi
Tokiwa Kyoji
Yamamoto Yoshikazu
Kansai Paint Co. Ltd.
Smart & Biggar
Suzuki Motor Corporation
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