Stock material or miscellaneous articles – Composite
Patent
1997-09-19
2000-01-11
Lusignan, Michael
Stock material or miscellaneous articles
Composite
10628716, 134 1, 427164, 427165, 4271263, 427299, 428446, 428688, 428689, 502240, B32B 904
Patent
active
060133724
ABSTRACT:
The surface of a substrate is coated with an abrasion-resistant photocatalytic coating comprised of a semiconductor photocatalyst. Upon irradiation by a light having a wavelength of an energy higher than the bandgap energy of the photocatalyst, water is chemisorbed onto the surface in the form of hydroxyl groups (OH.sup.--) whereby the surface of the photocatalytic coating is rendered highly hydrophilic. In certain embodiments, the surface of a mirror, lens, or windowpane is coated with the photocatalytic coating to exhibit a high degree of antifogging function. In another embodiment, an article or product coated with the photocatalytic coating is disposed outdoors and the highly hydrophilic surface thereof is self-cleaned as it is subjected to rainfall. In a still another embodiment, an article is coated with the photocatalytic coating and, when the article is soaked in, rinsed by or wetted with water, fatty dirt and contaminants are readily released without resort to a detergent.
REFERENCES:
patent: 3347816 (1967-10-01), Krauss et al.
patent: 3451833 (1969-06-01), Bonitz et al.
patent: 3976497 (1976-08-01), Clark
patent: 4954465 (1990-09-01), Kawashima et al.
patent: 4955208 (1990-09-01), Kawashima et al.
patent: 5547823 (1996-08-01), Murasawa et al.
patent: 5595813 (1997-01-01), Ogawa et al.
patent: 5616532 (1997-04-01), Heller et al.
patent: 5643436 (1997-07-01), Ogawa et al.
patent: 5755867 (1998-05-01), Chikani et al.
Nippon Kagaku Kaishi, 1986 (1), 8-11, "Photo Sinking of Titanium(IV) Oxide Powders".
Denki Kagaku, vol. 54, No. 2(1986), pp. 153-158 "Image Formation on a Treat Tio2 Anode to by Hydrophobic".
Hyomen (Surface), vol. 27, No. 9 (1989) "Hydrophobilization of the Surface of SolidCatalyst".
Pt-Tio.sub.2 thin films on glass substrates as efficient photocatalysts (Journal of Material Science 24 (1989) Jan., No. 1, London.
Hyomen (Surface), vol. 27, No. 9 (1989).
Denki Kagaku, vol. 54, No. 2 (1986).
The Chemical Society of Japan, 1986, (1), 8-11.
Chikuni Makoto
Fujishima Akira
Hashimoto Kazuhito
Hayakawa Makoto
Kitamura Atsushi
Lusignan Michael
Toto Ltd.
LandOfFree
Method for photocatalytically rendering a surface of a substrate does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for photocatalytically rendering a surface of a substrate, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for photocatalytically rendering a surface of a substrate will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1460575