High shading performance coatings
First Claim
Patent Images
1. A method of producing coated substrates, the method comprising providing a pane having generally-opposed first and second major surfaces and depositing upon one of said major surfaces a low-emissivity coating comprising, in sequence outwardly:
- (a) an inner coat;
(b) a first infrared-reflective film deposited directly over the inner coat at a thickness of between about 76 Å and
about 122 Å
;
(c) a first high absorption blocker layer deposited directly over the first infrared-reflective film, the first high absorption blocker layer being deposited as a metallic film selected from the group consisting of niobium, titanium, and niobium-titanium, wherein the first high absorption blocker layer is deposited at a thickness of between about 38 Å and
about 69 Å
;
(d) a middle coat deposited directly over the first high absorption blocker layer;
(e) a second infrared-reflective film deposited directly over the middle coat at a thickness of between about 119 Å and
about 184 Å
; and
(f) a second high absorption blocker layer deposited directly over the second infrared-reflective film, the second high absorption blocker layer being deposited as a metallic film selected from the group consisting of niobium, titanium, niobium-titanium, wherein the second high absorption blocker layer is deposited at a thickness of between about 29 Å and
about 63 Å
, wherein the first and second high absorption blocker layers have a combined thickness of at least 70 Å
, wherein the inner coat comprises at least one transparent dielectric film, and wherein the middle coat comprises at least one transparent dielectric film, the coated pane having a maximum visible transmittance of less than about 50%.
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Abstract
The invention provides high shading performance, low-emissivity coatings. The invention provides a monolithic pane bearing a high shading performance, low-emissivity coating. The invention also provides an insulating glass unit bearing a high shading performance, low-emissivity coating. Finally, the invention provides methods of producing coated substrates by depositing high shading performance, low-emissivity coatings.
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Citations
54 Claims
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1. A method of producing coated substrates, the method comprising providing a pane having generally-opposed first and second major surfaces and depositing upon one of said major surfaces a low-emissivity coating comprising, in sequence outwardly:
-
(a) an inner coat;
(b) a first infrared-reflective film deposited directly over the inner coat at a thickness of between about 76 Å and
about 122 Å
;
(c) a first high absorption blocker layer deposited directly over the first infrared-reflective film, the first high absorption blocker layer being deposited as a metallic film selected from the group consisting of niobium, titanium, and niobium-titanium, wherein the first high absorption blocker layer is deposited at a thickness of between about 38 Å and
about 69 Å
;
(d) a middle coat deposited directly over the first high absorption blocker layer;
(e) a second infrared-reflective film deposited directly over the middle coat at a thickness of between about 119 Å and
about 184 Å
; and
(f) a second high absorption blocker layer deposited directly over the second infrared-reflective film, the second high absorption blocker layer being deposited as a metallic film selected from the group consisting of niobium, titanium, niobium-titanium, wherein the second high absorption blocker layer is deposited at a thickness of between about 29 Å and
about 63 Å
, wherein the first and second high absorption blocker layers have a combined thickness of at least 70 Å
, wherein the inner coat comprises at least one transparent dielectric film, and wherein the middle coat comprises at least one transparent dielectric film, the coated pane having a maximum visible transmittance of less than about 50%. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 31, 32, 33)
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15. A method of producing coated substrates, the method comprising providing a pane having generally-opposed first and second major surfaces and depositing upon one of said major surfaces a low-emissivity coating comprising, in sequence outwardly:
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(a) an inner coat;
(b) a first infrared-reflective film deposited directly over the inner coat;
(c) a first high absorption blocker layer deposited directly over the first infrared-reflective film, the first high absorption blocker layer being deposited as a metallic film;
(c) a second infrared-reflective film; and
(d) a second high absorption blocker layer deposited directly over the second infrared-reflective film, the second high absorption blocker layer being deposited as a metallic film;
wherein the first and second high absorption blocker layers have a combined thickness of at least 70 Å
, wherein the inner coat comprises at least one transparent dielectric film, wherein each film of the inner coat is a transparent dielectric film having a refractive index of between about 1.7 and about 2.4, and wherein the coated pane has a maximum visible transmittance of less than about 50%. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43)
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23. A method of producing coated substrates, the method comprising providing a pane having generally-opposed first and second major surfaces and depositing upon one of said major surfaces a low-emissivity coating comprising, in sequence outwardly:
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(a) an inner coat comprising at least one transparent dielectric film;
(b) a first infrared-reflective film deposited directly over the inner coat;
(c) a first high absorption blocker layer deposited directly over the first infrared-reflective film, the first high absorption blocker layer being deposited as a metallic film;
(c) a second infrared-reflective film; and
(d) a second high absorption blocker layer deposited directly over the second infrared-reflective film, the second high absorption blocker layer being deposited as a metallic film;
wherein the first and second high absorption blocker layers are deposited at a combined thickness of at least 70 Å
, the first and second high absorption blocker layers being deposited at thicknesses that are different by at least 5 angstroms, and wherein the coated pane has a maximum visible transmittance of less than about 50%. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 44)
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- 45. An insulating glass unit comprising first and second panes held in a spaced-apart configuration, the panes having confronting inner surfaces oriented toward a between-pane space and opposed outer surfaces oriented away from the between-pane space, wherein one of said inner surfaces bears a high performance, low-emissivity coating comprising first and second infrared-reflective films and first and second high absorption blocker layers positioned respectively directly over said first and second infrared-reflective films, the coating including an inner coat between the first infrared-reflective film and said one of said inner surfaces, the coating including a middle coat between the first high absorption blocker layer and the second infrared-reflective film, the coating including an outer coat over the second high absorption blocker layer, the insulating glass unit having a visible transmission of between about 0.38 and about 0.42, and yet the insulating glass unit has an exterior reflected color characterized by ah and bh color coordinates that are both negative, the insulating glass unit having a solar heat gain coefficient of less than about 0.27 and yet having an exterior visible reflectance of less than about 18%, wherein the coating provides an emissivity of less than 0.08.
Specification