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US 8,133,599 B2Granted
Undercoating layers providing improved photoactive topcoat functionality
AssigneePPG Industries Ohio, Inc.
InventorsSongwei Lu, Caroline S. Harris, James McCamy, Ilya Koltover, Mehran Arbab, Cheri M. Boykin
Life of this patent
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Abstract
A coated article includes a substrate and a first coating formed over at least a portion of the substrate. The first coating includes a mixture of oxides including oxides of at least two of P, Si, Ti, Al and Zr. A photoactive functional coating is formed over at least a portion of the first coating. In one embodiment, the functional coating includes titania.
Claims9
A coated article, comprising:
- a substrate;
- a first coating formed over at least a portion of the substrate, the first coating comprising a mixture of at least two oxides selected from the group consisting of oxides of P, Si, Ti, Al and Zr;
- and
- a photoactive coating formed over at least a portion of the first coating,
- wherein the first coating is a multi-layer coating comprising:
- a first layer comprising phosphorous oxide, silica and titania, with silica present in the range of 70-80 volume %;
- a second layer comprising phosphorous oxide, silica and titania, with silica present in the range of 48-62 volume %;
- and
- a third layer comprising phosphorous oxide, silica and titania, with silica present in the range of 70-80 volume %.
6 more elements
A coated article, comprising:
- a substrate;
- a first coating formed over at least a portion of the substrate, the first coating comprising a mixture of oxides comprising oxides of at least two of P, Si, Ti, Al and Zr;
- and
- a photoactive coating formed over at least a portion of the first coating,
- wherein the first coating is a multi-layer coating comprising:
- a first layer comprising 5-10 volume % phosphorous oxide, 70-80 volume % silica and 10-25 volume % titania with a thickness in the range of 11 nm to 29 nm;
- a second layer comprising 2 volume % phosphorous oxide, 48-62 volume % silica and 36-50 volume % titania with a thickness in the range of 21 nm to 33 nm;
- and
- a third layer comprising 5-11 volume % phosphorous oxide, 70-80 volume % silica and 9-25 volume % titania with a thickness in the range of 15 nm to 23 nm.
6 more elements
A photoactive article, comprising:
- a glass substrate;
- a first coating formed over at least a portion of the substrate, the first coating comprising a mixture of silica, titania and alumina;
- and
- a photoactive functional coating comprising titania formed over at least a portion of the first coating,
- wherein the first coating is a multi-layer coating comprising:
- a first layer comprising phosphorous oxide, silica and titania, with titania present in the range of 10-25 volume %;
- a second layer comprising phosphorous oxide, silica and titania, with titania present in the range of 36-50 volume %;
- and
- a third layer comprising phosphorous oxide, silica and titania, with titania present in the range of 9-25 volume %.
6 more elements
Dependencies are inferred from the claim text.