发明申请
- 专利标题： SURFACE-COATED ALUMINUM AND ZINC PLATED STEEL SHEET AND METHOD OF PREPARING SAME
- 专利标题（中）： 表面涂覆的铝和镀锌钢板及其制备方法
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申请号： US14381203申请日： 2013-02-28
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公开(公告)号： US20150044498A1公开(公告)日： 2015-02-12
- 发明人: Nobuki Shiragaki , Tomokazu Sugitani , Hiroyuki Oyokawa , Satoru Yonetani , Hiroshi Kanai , Nobuyuki Shimoda , Ichiro Oura , Hitoshi Kikuchi
- 申请人： NIPPON STEEL & SUMIKIN COATED SHEET CORPORATION , NIPPON STEEL & SUMITOMO METAL CORPORATION , NIHON PARKERIZING CO., LTD.
- 优先权： JP2012-042026 20120228
- 国际申请： PCT/JP2013/001203 WO 20130228
- 主分类号： C09D5/08
- IPC分类号： C09D5/08 ; C09D133/10 ; C09D133/12 ; B05D1/36 ; C09D175/06
摘要：
A surface-coated aluminum and zinc plated steel sheet in accordance with the present invention includes: a plated steel sheet; a composite coating film formed by applying an aqueous surface treatment agent on the plated steel sheet and drying the aqueous surface treatment agent. The aqueous surface treatment agent contains a water dispersible resin (A), a cobalt compound (B), and water, and has a pH within a range of 7.5 to 10. The composite coating film contains the water dispersible resin (A) and the cobalt compound (B). A percentage by mass of the water dispersible resin (A) in the composite coating film is 90% or more. A mass of the composite coating film per one surface of the plated steel sheet falls within a range of 0.5 to 3.5 g/m2.
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