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US 2011/0212271 A1Published application
Hydrophilic compositions, methods for their production, and substrates coated with such compositions
AssigneePPG Industries Ohio, Inc.
InventorsMasayuki Nakajima, Chia-Chen Lin, Shan Cheng, James P. Colton
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Abstract
Liquid compositions are disclosed that include a photocatalytic material and a hydrophilic binder that includes an essentially completely hydrolyzed organosilicate. Also disclosed are methods of making such compositions, methods of coating a substrate with a hydrophilic composition, and substrates coated with such compositions. The compositions may, for example, be embodied as stable one-pack compositions.
Claims6
A method of coating a substrate comprising:
- (a) applying to the substrate a liquid composition comprising (1) a photocatalytic material present in an amount ranging from 0.1 to 0.75 percent by weight based on the total weight of the composition, (2) a hydrophilic essentially completely hydrolyzed organosilicate comprising silanol groups present in the liquid composition in an amount ranging from 0.1 to 2 percent by weight calculated as SiO2, based on the total weight of the composition, and (3) water present in an amount sufficient to prevent a condensation reaction of the silanol groups, and
- (b) curing the composition applied in step (a).
Dependencies are inferred from the claim text.