Title:
CHEMICAL CONVERSION COATED PLATED STEEL SHEET AND METHOD FOR PRODUCING SAME
Document Type and Number:
WIPO Patent Application WO/2011/158516
Kind Code:
A1
Abstract:
Disclosed is a chemical conversion coated Al-plated steel sheet which has excellent weather resistance, water resistance and coating film adhesion. Specifically, a chemical conversion coating liquid is applied over and dried on the surface of an Al alloy-plated steel sheet, thereby forming a chemical conversion coating film that has a film thickness of 0.5-10 μm. The chemical conversion coating liquid contains: a fluorine-containing olefin resin, which contains 7-20% by mass of F atoms and 0.05-5% by mass of hydrophilic functional groups that are selected from among a carboxyl group, a sulfonic acid group and salts of carboxyl group and sulfonic acid group and has a number average molecular weight within the range of 1,000-2,000,000; and an oxygen acid salt, fluoride, hydroxide, organic acid salt, carbonate or peroxygenated salt of a group 4A metal. The amount of the oxygen acid salt, fluoride, hydroxide, organic acid salt, carbonate or peroxygenated salt of a group 4A metal relative to the fluorine-containing olefin resin in the chemical conversion coating liquid is within the range of 0.1-5% by mass in terms of the metal.
Inventors:
MATSUNO, Masanori (())
松野 雅典 (())
UEDA, Koichiro (())
上田 耕一郎 (())
松野 雅典 (())
UEDA, Koichiro (())
上田 耕一郎 (())
Application Number:
JP2011/003483
Publication Date:
December 22, 2011
Filing Date:
June 17, 2011
Export Citation:
Assignee:
NISSHIN STEEL CO., LTD. (3-4-1, Marunouchi Chiyoda-k, Tokyo 66, 〒1008366, JP)
日新製鋼株式会社 (〒66 東京都千代田区丸の内三丁目４番１号 Tokyo, 〒1008366, JP)
MATSUNO, Masanori (())
松野 雅典 (())
UEDA, Koichiro (())
日新製鋼株式会社 (〒66 東京都千代田区丸の内三丁目４番１号 Tokyo, 〒1008366, JP)
MATSUNO, Masanori (())
松野 雅典 (())
UEDA, Koichiro (())
International Classes:
C23C28/00; B32B15/082; C23C22/36
Attorney, Agent or Firm:
WASHIDA, Kimihito (8th Floor, Shinjuku First West Bldg. 1-23-7, Nishi-Shinjuku, Shinjuku-k, Tokyo 23, 〒1600023, JP)
Download PDF:
Claims: