Inorganic-organic composite-treated zinc-plated steel sheet

Details Inorganic-organic composite-treated zinc-plated steel sheet Inorganic-organic composite-treated zinc-plated steel sheet

2006-03-14

2006-03-14

Lavilla, Michael E. (Department: 1775)

Stock material or miscellaneous articles

All metal or with adjacent metals

Composite; i.e., plural, adjacent, spatially distinct metal...

C428S457000, C428S704000, C428S219000, C428S472000, C428S472300

Reexamination Certificate

active

07011895

ABSTRACT:
The present invention is intended to provide an inorganic-organic composite-treated zinc-plated steel sheet whose treated coatings do not contain any hazardous chromate and which is excellent in corrosion resistance after alkaline degreasing and coating adhesion.An inorganic-organic composite-treated zinc-plated steel sheetwhich has a zinc phosphate coating, in a coating weight of 0.3 to 5 g/m2, on the zinc-plated steel sheet surface and, thereon, a post-treatment coating, in a coating weight of 0.01 to 1 g/m2, containing an organic resin (A), a zirconium compound (B), an inorganic corrosion inhibitor (C) and an organic corrosion inhibitor (D).

REFERENCES:
patent: 6720078 (2004-04-01), Isizuka 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
patent: WO 01/34873 (2001-05-01), None

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