ALUMINUM OR ALUMINUM ALLOY MATERIAL HAVING SURFACE TREATMENT COATING FILM, AND SURFACE TREATMENT METHOD THEREFOR

Title:

ALUMINUM OR ALUMINUM ALLOY MATERIAL HAVING SURFACE TREATMENT COATING FILM, AND SURFACE TREATMENT METHOD THEREFOR

Document Type and Number:

WIPO Patent Application WO/2011/099460

Kind Code:

A1

Abstract:

Disclosed is an aluminum or aluminum alloy material which is obtained by providing the surface of an aluminum or aluminum alloy base with a surface treatment coating film that is capable of maintaining hydrophilicity, high corrosion resistance, antibacterial properties and deodorizing properties for a long period of time. Also disclosed is a surface treatment method for the aluminum or aluminum alloy material. Specifically, an aluminum or aluminum alloy material which is capable of maintaining hydrophilicity, high corrosion resistance, antibacterial properties and deodorizing properties for a long period of time can be obtained by providing the surface of an aluminum or aluminum alloy base with a first protective layer and a second protective layer in this order, said first protective layer being a chemical conversion coating film that contains vanadium and at least one metal selected from among titanium, zirconium and hafnium, and said second protective layer being an organic coating film that is formed from a composition that contains (1) a chitosan derivative and a solubilizer, (2) a modified polyvinyl alcohol that is obtained by graft-polymerizing a hydrophilic polymer to a side chain of a polyvinyl alcohol, and (3) a water-soluble crosslinking agent.

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Inventors:

BANNAI HIROKATSU (JP)
OKAMOTO YOSHIYUKI (JP)
NAKAMURA KENJI (JP)
HIROSE TAKAYUKI (JP)
KASEBE OSAMU (JP)
NISHIYA SHIN (JP)
KOBAYASHI KENGO (JP)

Application Number:

PCT/JP2011/052572

Publication Date:

August 18, 2011

Filing Date:

February 08, 2011

Export Citation:

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Assignee:

NIHON PARKERIZING (JP)
DENSO CORP (JP)
BANNAI HIROKATSU (JP)
OKAMOTO YOSHIYUKI (JP)
NAKAMURA KENJI (JP)
HIROSE TAKAYUKI (JP)
KASEBE OSAMU (JP)
NISHIYA SHIN (JP)
KOBAYASHI KENGO (JP)

International Classes:

B32B15/082; C22C21/00; C23C22/40; C23C28/00

Foreign References:

JP2000345362A	2000-12-12
JP2009108111A	2009-05-21
JP2008150585A	2008-07-03
JPH07323500A	1995-12-12
JP2008150585A	2008-07-03

Other References: