发明授权
- 专利标题: Phosphate coatings for metal surfaces
- 专利标题(中): 金属表面的磷酸盐涂层
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申请号: US159474申请日: 1988-02-16
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公开(公告)号: US4838957A公开(公告)日: 1989-06-13
- 发明人: Satoshi Miyamoto , Masamichi Nagatani
- 申请人: Satoshi Miyamoto , Masamichi Nagatani
- 申请人地址: PA Ambler
- 专利权人: Amchem Products, Inc.
- 当前专利权人: Amchem Products, Inc.
- 当前专利权人地址: PA Ambler
- 优先权: JPX57-147226 19820824
- 主分类号: C25D13/20
- IPC分类号: C25D13/20 ; C23C22/00 ; C23C22/13 ; C23C22/16 ; C23C22/18 ; C23C22/36 ; C23C22/73
摘要:
Processes and solutions for phosphating metal surfaces. The solutions are acidic aqueous phosphate solutions containing (a) from 0.1 to 1.5 g/l of zinc ion; (b) from 5 to 50 g/l of phosphate ion; (c) from 0.2 to 4 g/l of manganese ion; (d) at least 0.05 g/l of fluoride ion; (e) less than 0.5 g/l of chloride ion; and (f) a phosphating accelerator. The metal surface phosphated with the solution including galvanized steel, is free of white spots and is suitable for electrocoating.
公开/授权文献
- US5363745A Beverage vessel with magnetic lid 公开/授权日:1994-11-15