PRECOATED METAL PLATE HAVING EXCELLENT RESISTANCE TO CONTAMINATION, MANUFACTURING METHOD THEREFOR, AND SURFACE-TREATMENT LIQUID

WIPO Patent Application WO/2010/131775

A1

Provided is a precoated metal plate that can maintain photocatalytic contamination resistance and self-cleaning functionality over a long period of time. A surface-treatment liquid and a method for suitably manufacturing the precoated metal plate are also provided. The precoated metal plate has two or more photocatalytically active film layers formed on top of a precoated metal plate base material, which comprises a base metal plate with an organic resin coating layer on the surface thereof. The two or more film layers contain an inorganic–organic complex resin, a photocatalytically active substance, and inorganic flat particles. Said inorganic–organic complex resin comprises a condensate of an alkoxysilane selected from a set comprising the following and combinations thereof: an alkoxysilane having an organic group selected from a set comprising a C1–12 alkyl group, an aryl group, a carboxyl group, a hydroxyl group, and combinations thereof; an alkoxysilane having an epoxy group; an alkoxysilane having an amino group; and tetraalkoxysilane. The outermost film layer contains the largest amount of the photocatalytically active substance, and the amount of said substance in each layer is less the further inward that layer is.

KANAI TAKAO (JP)
NOMURA HIROMASA (JP)

PCT/JP2010/058485

November 18, 2010

May 13, 2010

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NIPPON STEEL CORP (JP)
KANAI TAKAO (JP)
NOMURA HIROMASA (JP)

B32B15/08; C09D5/16; C09D7/61; C09D183/10; C23C26/00

JP2005290369A	2005-10-20
JP2006522199A	2006-09-28
JP2008516023A	2008-05-15

AOKI, Atsushi et al. (JP)
Aoki 篤 (JP)

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