Low shading coefficient and low emissivity coatings and coated articles
First Claim
1. A solar control article, comprising:
- a substrate having a surface;
at least one antireflective layer deposited over the substrate surface; and
at least one infrared reflective film deposited over the at least one antireflective layer, such that the coated article has a luminous transmission of less than about 70 percent, a shading coefficient less than about 0.44 and a solar heat gain coefficient of less than about 0.38 and a ratio of luminous transmittance to solar heat gain coefficient of greater than about 1.85.
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Accused Products
Abstract
The present invention is directed to a low emissivity, low shading coefficient, multi-layer coating and coated article having a luminous transmission of less than about 70 percent, a shading coefficient less than about 0.44 and a solar heat gain coefficient of less than about 0.38 and a ratio of luminous transmittance to solar heat gain coefficient of greater than about 1.85. The coated article, e.g. an IG unit, has a substrate with at least one antireflective layer deposited over the substrate. At least one infrared reflective layer is deposited over the antireflective layer and at least one primer layer is deposited over the infrared reflective layer. Optionally a second antireflective layer is deposited over the first primer layer and optionally a second infrared reflective layer is deposited over the second antireflective layer. Optionally a second primer layer is deposited over the second infrared reflective layer and optionally a third antireflective layer is deposited over the second primer layer, such that the coated article can have the aforementioned optical properties. Also an optional protective overcoat, e.g. an oxide or oxynitride of titanium or silicon, and/or solvent soluble organic film former may be deposited over the uppermost antireflective layer.
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Citations
57 Claims
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1. A solar control article, comprising:
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a substrate having a surface;
at least one antireflective layer deposited over the substrate surface; and
at least one infrared reflective film deposited over the at least one antireflective layer, such that the coated article has a luminous transmission of less than about 70 percent, a shading coefficient less than about 0.44 and a solar heat gain coefficient of less than about 0.38 and a ratio of luminous transmittance to solar heat gain coefficient of greater than about 1.85. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 57)
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29. A solar control coated article, comprising:
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a substrate having a surface;
a first antireflective layer deposited over a substrate surface;
a first infrared reflective layer deposited over the first antireflective layer;
a first primer layer deposited over the first infrared reflective layer;
a second antireflective layer deposited over the first primer layer;
a second infrared reflective layer deposited over the second antireflective layer;
a second primer film deposited over the second infrared reflective layer; and
a third antireflective layer deposited over the second primer layer, such that the coated article gives a luminous transmission of less than 70%, a solar heat gain coefficient of less than about 0.38 and a ratio of luminous transmittance to solar heat gain coefficient of greater than about 1.85.
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51. A method of making a solar control article, comprising the steps of:
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providing a substrate having a surface;
depositing at least one antireflective layer over the substrate surface; and
depositing at least one infrared reflective layer over the at least one antireflective layer such that the coated article has a luminous transmittance of less than about 70% greater than about 55%, a shading coefficient less than about 0.44, a solar heat gain coefficient of less than about 0.38 and a ratio of luminous transmittance to solar heat gain coefficient of greater than about 1.85. - View Dependent Claims (52, 53, 54, 55, 56)
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Specification