Method for forming brilliant coating film and coated article...

B - Operations – Transporting – 05 – D

Patent

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B05D 5/06 (2006.01) B05D 7/00 (2006.01)

Patent

CA 2524775

There is provided a method for forming a brilliant coating film with an excellent brilliant appearance by using aqueous first and second base coating compositions without preheating the applied first base coating composition. In the method, the aqueous first base coating composition is applied to a substrate to form a first base coating, the aqueous second base coating composition is applied to the first base coating to form a second base coating, a clear coating composition is applied to the second base coating to form a clear coating, and then the uncured coatings formed are simultaneously heated and cured, under controlling the solid contents of the first and second base coating compositions and the ratio therebetween, or the brilliant pigment mass concentrations of the base coating compositions and the ratio therebetween, or the mass ratio, the evaporation rate, and the solubility parameter of a solvent contained in the first base coating composition.

L'invention concerne un procédé permettant de former un film de revêtement brillant, qui présente un excellent aspect brillant, à l'aide d'une première et d'une seconde compositions de revêtement de base, sans préchauffer la première composition de revêtement de base appliquée. Dans ce procédé, la première composition de revêtement de base aqueuse est appliquée sur un substrat afin de former un premier revêtement de base, la seconde composition de revêtement de base est appliquée sur le second revêtement de base afin de former un second revêtement de base, une composition de revêtement transparent est appliquée sur le second revêtement base afin de former un revêtement transparent, puis les revêtements non durcis formés sont simultanément chauffés et durcis, en régulant, soit le contenu solide de la première et de la seconde compositions de revêtement de base et le rapport entre ces deux compositions, soit les concentrations massiques des pigments brillants des compositions de revêtement de base et le rapport entre ces deux compositions, soit le rapport de masse, le taux d'évaporation et le paramètre de solubilité d'un solvant contenu dans la première composition de revêtement de base.

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