Title:
COATED PLATED STEEL SHEET
Document Type and Number:
WIPO Patent Application WO/2021/235363
Kind Code:
A1
Abstract:
The present disclosure provides a coated plated steel sheet which includes a plating layer containing prescribed quantities of aluminum, silicon, zinc and magnesium, which exhibits excellent performance in terms of corrosion resistance, blackening resistance, weather resistance, and the like, and which has an excellent appearance. In the present disclosure, the plating layer of the coated plated steel sheet contains prescribed proportions of aluminum, silicon, zinc and magnesium. A protective layer is formed on the plating layer by coating an aqueous surface treatment agent on the surface of the plating layer and then drying the same The aqueous surface treatment agent contains an aqueous anionic urethane resin (A) having a polyester polyol residue, zirconia (B), a molybdenum oxoate (C), a hindered amine (D) and water. These components are blended at prescribed proportions in the aqueous surface treatment agent.
Inventors:
WAKASUGI MASAYA
YONETANI SATORU
KOSUGE TETSUSHI
SHIRAGAKI NOBUKI
SUGITANI TOMOKAZU
MURAYAMA YOSHINORI
KITAMURA KAZUYA
NARUSE SHOICHI
YONETANI SATORU
KOSUGE TETSUSHI
SHIRAGAKI NOBUKI
SUGITANI TOMOKAZU
MURAYAMA YOSHINORI
KITAMURA KAZUYA
NARUSE SHOICHI
Application Number:
PCT/JP2021/018473
Publication Date:
November 25, 2021
Filing Date:
May 14, 2021
Export Citation:
Assignee:
NIPPON STEEL COATED SHEET CORP (JP)
NIHON PARKERIZING (JP)
NIHON PARKERIZING (JP)
International Classes:
C23C28/00; B32B15/08; B32B15/095; B32B15/18
Domestic Patent References:
| WO2011102434A1 | 2011-08-25 | |||
| WO2017010571A1 | 2017-01-19 | |||
| WO2021065485A1 | 2021-04-08 |
Foreign References:
| JP2017197795A | 2017-11-02 | |||
| JP2013209749A | 2013-10-10 | |||
| JP2010150626A | 2010-07-08 |
Attorney, Agent or Firm:
HOKUTO PATENT ATTORNEYS OFFICE (JP)
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