Stock material or miscellaneous articles – All metal or with adjacent metals – Composite; i.e. – plural – adjacent – spatially distinct metal...
Reexamination Certificate
2006-04-18
2006-04-18
Lavilla, Michael E. (Department: 1775)
Stock material or miscellaneous articles
All metal or with adjacent metals
Composite; i.e., plural, adjacent, spatially distinct metal...
C428S681000, C428S457000, C428S219000, C428S461000, C428S472300
Reexamination Certificate
active
07029762
ABSTRACT:
The present invention provides an inorganic-organic composite-treated zinc-plated steel sheet whose treated coatings do not contain any chromium and which is excellent in corrosion resistance after degreasing, coating adhesion and electrodeposition coating performance.The inorganic-organic composite-treated zinc-plated steel sheet, which is obtained by forming a zinc phosphate coating, in a coating weight of 0.3 to 5 g/m2, on the zinc-plated steel sheet surface and forming thereon a post-treatment coating, in a coating weight of 0.01 to 1 g/m2, by using a post-treatment composition containing at least one compound (A) selected from the group consisting of thiocarbonyl group-containing compounds, sulfide group-containing compounds and guanidyl group-containing compounds, an organic resin (B), a crosslinking agent (C) and an inorganic corrosion inhibitor (D).
REFERENCES:
patent: 6509099 (2003-01-01), Urata et al.
patent: 6562474 (2003-05-01), Yoshimi et al.
patent: 2003/0072962 (2003-04-01), Matsuzaki et al.
patent: 2001-105528 (2001-04-01), None
patent: 2001-131763 (2001-05-01), None
Ishizuka Kiyokazu
Morishita Atsushi
Saito Koichi
Sasaki Motohiro
Shindo Hidetoshi
Lavilla Michael E.
Nippon Paint Co. Ltd.
Nippon Steel Corporation
Westerman Hattori Daniels & Adrian LLP
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