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:
Dec. 25, 2018
Filed:
Nov. 28, 2014
Nippon Paint Surf Chemicals Co., Ltd., Shinagawa-ku, JP;
Nisshin Steel Co., Ltd., Chiyoda-ku, JP;
Yusuke Miura, Yokohama, JP;
Shintaro Nakamura, Yokohama, JP;
Tadashi Nakano, Kaizuka, JP;
Masaya Yamamoto, Ichikawa, JP;
Hirofumi Taketsu, Suginami-ku, JP;
NIPPON PAINT SURF CHEMICALS CO., LTD., Shinagawa-ku, JP;
NISSHIN STEEL CO., LTD., Chiyoda-ku, JP;
Abstract
Provided is a method for obtaining a chemical conversion coating-treated zinc-aluminum-magnesium alloy-plated steel sheet having extremely excellent in corrosion resistance and adhesiveness to a resin coating film. The method is for treating the surface of a zinc-aluminum-magnesium alloy-plated steel sheet with a metal surface treatment agent, in which the metal surface treatment agent contains a compound (A) having a zirconyl ([Zr═O]) structure, a vanadium compound (B), a titanium fluorocomplex compound (C), an organic phosphorus compound (Da) containing a phosphoric acid group and/or a phosphonic acid group, an inorganic phosphorus compound (Db), a specific aqueous acrylic resin (E), and an oxazoline group-containing polymer (F) as a curing agent, each in a predetermined amount, and the pH of the metal surface treatment agent is 3 to 6.