Claims
- 1. A coating composition comprising titanium oxide particles having photo-catalytic activity, a solvent-soluble and non-hydrolyzable zirconium compound, and a solvent.
- 2. The composition according to claim 1, wherein the metal oxide particles having photo-catalytic activity have an average particle diameter in the range of about 0.005 to 0.3 μm.
- 3. The composition according to claim 1, wherein the solvent is at least one solvent selected from the group consisting of water and hydrophilic organic solvents.
- 4. The composition according to claim 1, wherein the solvent-soluble and non-hydrolyzable zirconium compound is at least one compound selected from the group consisting of zirconium oxychloride, zirconium hydroxychloride, zirconium nitrate and ammonium zirconium carbonate.
- 5. The composition according to claim 1, wherein the amount of the zirconium compound is in the range of about 3 to about 200 parts by weight, as ZrO2, per 100 parts by weight of the metal oxide particles having photo-catalytic activity.
- 6. A film made from a coating composition comprising titanium oxide particles having photo-catalytic activity, a solvent-soluble and non-hydrolyzable zirconium compound, and a solvent; said film having a thickness in the range of about 0.05 μm to about 2 μm.
- 7. The film according to claim 6, wherein the metal oxide particles having photo-catalytic activity have an average particle diameter in the range of about 0.005 to 0.3 μm.
- 8. The film according to claim 6, wherein the solvent is at least one solvent selected from the group consisting of water and hydrophilic organic solvents.
- 9. The film according to claim 6, wherein the solvent-soluble and non-hydrolyzable zirconium compound is at least one compound selected from the group consisting of zirconium oxychloride, zirconium hydroxychloride, zirconium nitrate and ammonium zirconium carbonate.
- 10. The film according to claim 6, wherein the amount of the zirconium compound is in the range of about 3 to about 200 parts by weight, as ZrO2, per 100 parts by weight.
- 11. A composite of a film with a base material, which is made by coating the base material with a coating composition comprising titanium oxide particles having photo-catalytic activity, a solvent-soluble and non-hydrolyzable zirconium compound, and a solvent to form a film, and curing the film on the base material; said film having a thickness in the range of about 0.05 μm to about 2 μm.
- 12. The composition according to claim 11, wherein the metal oxide particles having photo-catalytic activity have an average particle diameter in the range of about 0.005 to 0.3 μm.
- 13. The composite according to claim 11, wherein the solvent-soluble and non-hydrolyzable zirconium compound is at least one compound selected from the group consisting of zirconium oxychloride, zirconium hydroxychloride, zirconium nitrate and ammonium zirconium carbonate.
- 14. The composite according to claim 11, wherein the amount of the zirconium compound is in the range of about 3 to about 200 parts by weight, as ZrO2, per 100 parts by weight of the metal oxide particles having photo-catalytic activity.
- 15. The composite according to claim 11, wherein the base material is selected from ceramics, metals, glass, plastics, paper, wood, concrete, electric lamps and lighting fixtures.
Priority Claims (2)
Number |
Date |
Country |
Kind |
9-331614 |
Dec 1997 |
JP |
|
10-135550 |
May 1998 |
JP |
|
CROSS REFERENCE TO RELATED APPLICATIONS
This application is a continuation-in-part application of international application PCT/JP98/05374 filed Nov. 30, 1998. This application is an application filed under 35 U.S.C. §111(a) claiming benefit pursuant to 35 U.S.C. §119(e)(1) of the filing date of Provisional Application 60/094,492 filed Jul. 29, 1998 pursuant to 35 U.S.C. §111(b).
US Referenced Citations (2)
Number |
Name |
Date |
Kind |
5690922 |
Mouri et al. |
Nov 1997 |
A |
5897958 |
Yamada et al. |
Apr 1999 |
A |
Non-Patent Literature Citations (1)
Entry |
Fu et al. Enhanced Photocatalytic Performance of Titania-Based Binary Metal Oxides: TiO2/SiO2 and TiO2/ZrO2. Environ. Sci. Technol. 1996, 30, 947-953. |
Provisional Applications (1)
|
Number |
Date |
Country |
|
60/094492 |
Jul 1998 |
US |
Continuation in Parts (1)
|
Number |
Date |
Country |
Parent |
PCT/JP98/05374 |
Nov 1998 |
US |
Child |
09/585621 |
|
US |