| US 7,510,763 B2 | ||
| Substrate with a self-cleaning coating | ||
| Lethicia Gueneau, Vincennes (France); Mauricette Rondet, Vitry sur Seine (France); Sophie Besson, Paris (France); Jean-Pierre Boilot, Meudon-la-Foret (France); Thierry Gacoin, Bures sur Yvette (France); and Clarisse Durand, Paris (France) | ||
| Assigned to Saint-Gobain Glass France, Courbevoie (France) | ||
| Appl. No. 10/510,714 PCT Filed Apr. 16, 2003, PCT No. PCT/FR03/01218 § 371(c)(1), (2), (4) Date Apr. 29, 2005, PCT Pub. No. WO03/087002, PCT Pub. Date Oct. 23, 2003. |
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| Claims priority of application No. 02 04775 (FR), filed on Apr. 17, 2002. | ||
| Prior Publication US 2006/0014050 A1, Jan. 19, 2006 | ||
| This patent is subject to a terminal disclaimer. | ||
| Int. Cl. B32B 3/26 (2006.01); B32B 3/14 (2006.01); C04B 38/00 (2006.01) | ||
| U.S. Cl. 428—307.7 [428/142; 428/144; 428/409; 428/410; 428/701; 427/165; 427/255.11; 427/255.14; 427/255.19; 216/41; 106/2] | 29 Claims |
| 1. A substrate, comprising:
a substrate support; and
a coating provided on at least part of a surface of the substrate support;
wherein:
the substrate support comprises an essentially transparent substrate, a ceramic substrate, a glass-ceramic substrate, an architectural
material substrate, or a fibrous substrate;
the coating has a mesoporous structure and exhibits photocatalytic properties;
the coating comprises a coating composition and at least partially crystallized titanium oxide incorporated into the coating
composition in the form of perfectly discernible particles;
the coating composition differs in composition from the at least partially crystallized titanium oxide; and
the substrate is prepared by:
preparing a liquid composition comprising at least one precursor of the coating composition, and at least one organic structuring
agent;
precipitating the at least one precursor around the at least one organic structuring agent;
adding the at least partially crystallized titanium oxide to the liquid composition;
applying the liquid composition to the at least part of the surface of the substrate support; and
removing the organic structuring agent, thereby forming the coating on the substrate.
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