Coated steel sheet and exterior building material

A coated steel sheet comprises: a steel sheet; a primer coating film which is arranged on the steel sheet and comprises an anti-corrosive pigment and an aggregate composed of primary particles; and a top coating film which is arranged on the primer coating film. The anti-corrosive pigment comprises...

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Bibliographische Detailangaben
Hauptverfasser: Fujimoto Yasunori, Kawahara Naho, Hayashida Takahide, Owa Katsumi, Takaoka Shinji, Ueda Koichiro
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:A coated steel sheet comprises: a steel sheet; a primer coating film which is arranged on the steel sheet and comprises an anti-corrosive pigment and an aggregate composed of primary particles; and a top coating film which is arranged on the primer coating film. The anti-corrosive pigment comprises at least one compound selected from the group consisting of a bivalent tin salt, a trivalent vanadium salt, a tetravalent vanadium salt, a tetravalent molybdenum salt, an oxycarboxylic acid salt, an ascorbic acid, a phosphorous acid salt and a hypophosphorous acid salt.