Multi-layer coatings and related methods
AssigneePPG Industries Ohio, Inc.
InventorsEdward R. Millero, Masayuki Nakajima, Chia-Cheng Lin, Shan Cheng, James P. Colton
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Abstract
Multi-layer coatings are disclosed that include (a) a first layer deposited from at least one composition that includes a polymeric composition, and (b) a second layer applied over at least a portion of the first layer in which the second layer is deposited from at least one liquid composition that includes (i) a photocatalytic material, and (ii) a binder that is hydrophilic and comprises 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 of making a painted surface easy-to-clean.
Claims8
A method for improving the anti-fouling and/or self-cleaning properties of a painted article, wherein the article comprises a surface having a coating layer deposited from a polymeric composition deposited thereon, the method comprising
- (a) applying a liquid composition comprising (i) a photocatalytic material, and (ii) a binder comprising a hydrophilic ungelled essentially completely hydrolyzed organosilicate directly to at least a portion of the coating layer deposited from the polymeric composition;
- and
- (b) curing the composition applied in step (a) to provide a coating having a dry film thickness of no more than 200 nanometers.
Dependencies are inferred from the claim text.