Photocatalyst coating liquid, photocatalyst film and photocatalyst member
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United States of America Patent
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Issued Date -
Jul 27, 2006
app pub date -
Apr 15, 2004
filing date -
Apr 30, 2003
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Abandoned
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Abstract
The present invention relates to a photocatalyst coating liquid capable of forming on an organic substrate a photocatalyst film that is excellent in photocatalytic functions such as super-hydrophilic nature and the performance of maintaining super-hydrophilic nature in a dark place and that has excellent durability, the photocatalyst coating liquid being excellent in stability, and a photocatalyst film formed therefrom, and there are provided a photocatalyst coating liquid comprising (A) titanium oxide fine particles formed of anatase type crystal, (B) colloidal silica and (C) a binder formed of a hydrolysis-condensate of a titanium alkoxide, and having, based on the total solid content, a component (A) content of 5 to 50 mass %, a component (B) content, as a solid content, of 25 to 75 mass % and a component (C) content, as a TiO.sub.2 slid content, of 10 to 55 mass %, and a photocatalyst film formed from the above coating liquid.
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