Multi-layer coatings with an inorganic oxide network containing layer and methods for their application
First Claim
1. A method for improving the anti-fouling, self-cleaning, easy-to-clean, and/or anti-fogging properties of an article, wherein the article comprises a surface having a coating layer comprising an inorganic oxide network deposited thereon, the method comprising:
- (1) applying a liquid composition comprising a hydrophilic ungelled essentially completely hydrolyzed organosilicate directly to at least a portion of the coating layer comprising an inorganic oxide network; and
(2) curing the composition applied in step (1) to provide a coating layer that;
(i) has a dry film thickness of no more than 200 nanometers, and(ii) is substantially free of Si—
OR groups, where R represents C1 to C4 alkyl groups;
wherein the pH of the liquid composition is no more than 3.5 or from 7.0 to 8.5.
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Accused Products
Abstract
Multi-layer coatings are disclosed that include (1) a first layer comprising an inorganic oxide network, and (2) a second layer applied over at least a portion of the first layer, wherein the second layer is deposited from at least one liquid composition that is hydrophilic and includes an essentially completely hydrolyzed organosilicate. Also disclosed are substrates coated with such multi-layer coatings, methods of applying such multi-layer coatings to a substrate and methods for improving the anti-fouling, self-cleaning, easy-to-clean, and/or anti-fogging properties of an article.
112 Citations
7 Claims
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1. A method for improving the anti-fouling, self-cleaning, easy-to-clean, and/or anti-fogging properties of an article, wherein the article comprises a surface having a coating layer comprising an inorganic oxide network deposited thereon, the method comprising:
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(1) applying a liquid composition comprising a hydrophilic ungelled essentially completely hydrolyzed organosilicate directly to at least a portion of the coating layer comprising an inorganic oxide network; and (2) curing the composition applied in step (1) to provide a coating layer that; (i) has a dry film thickness of no more than 200 nanometers, and (ii) is substantially free of Si—
OR groups, where R represents C1 to C4 alkyl groups;
wherein the pH of the liquid composition is no more than 3.5 or from 7.0 to 8.5. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification