Static structures (e.g. – buildings) – Transparent panel having active treatment with gas or liquid – Hygroscopic material; e.g. – internal drier
Patent
1997-09-02
1999-02-23
Friedman, Carl D.
Static structures (e.g., buildings)
Transparent panel having active treatment with gas or liquid
Hygroscopic material; e.g., internal drier
5278613, 428 34, E04C 234
Patent
active
058732039
ABSTRACT:
A multiple-glazed window unit of the type which includes two or more sheets maintained in spaced relationship to each other by a spacing assembly to form an airspace wherein surfaces of the unit in contact with the airspace are subject to the accumulation thereon of moisture and/or organic contaminants present in the airspace is rendered self-desiccating of accumulated moisture and/or self-cleaning of accumulated organic surface contaminants by coating such surfaces with a photoelectrolytically-desiccating coating and/or a photocatalytically-activated self-cleaning coating. Upon exposing the coatings to actinic radiation, at least a portion of the accumulated moisture is removed by photoelectrolysis and/or at least a portion of the organic contaminants are removed by photocatalytic decomposition. A desiccant may or may not be associated with the airspace to assist in maintaining a moisture-free airspace. Exterior surfaces of the unit may also be rendered self-cleaning of accumulated organic surface contaminants by coating such exterior surfaces with a photocatalytically-activated self-cleaning coating.
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Hara, Michikazu et al. ; "CU.sub.2 O as a photocatalyst for overall water splitting under visible light irradiation"; Chem. Commun., 1998, pp. 357-358.
Aubrey Beth
Friedman Carl D.
Lepiane Donald C.
PPG Industries Inc.
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