The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 18, 2006
Filed:
Jun. 24, 2004
Kiyokazu Ishizuka, Himeji, JP;
Hidetoshi Shindo, Chiyoda-ku, JP;
Atsushi Morishita, Kimitsu, JP;
Koichi Saito, Shinagawa-ku, JP;
Motohiro Sasaki, Kawasaki, JP;
Atsuhiko Tounaka, Kawasaki, JP;
Kiyokazu Ishizuka, Himeji, JP;
Hidetoshi Shindo, Chiyoda-ku, JP;
Atsushi Morishita, Kimitsu, JP;
Koichi Saito, Shinagawa-ku, JP;
Motohiro Sasaki, Kawasaki, JP;
Atsuhiko Tounaka, Kawasaki, JP;
Nippon Steel Corporation, Tokyo, JP;
Nippon Paint Co., Ltd., Osaka, JP;
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/m, on the zinc-plated steel sheet surface and forming thereon a post-treatment coating, in a coating weight of 0.01 to 1 g/m, 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).