CA2493803A1 - Temperable high shading performance coatings - Google Patents

Temperable high shading performance coatings Download PDF

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Publication number
CA2493803A1
CA2493803A1 CA002493803A CA2493803A CA2493803A1 CA 2493803 A1 CA2493803 A1 CA 2493803A1 CA 002493803 A CA002493803 A CA 002493803A CA 2493803 A CA2493803 A CA 2493803A CA 2493803 A1 CA2493803 A1 CA 2493803A1
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Canada
Prior art keywords
high absorption
ang
absorption blocker
infrared
transparent dielectric
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Granted
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CA002493803A
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French (fr)
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CA2493803C (en
Inventor
Annette Krisko
Gary Pfaff
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Cardinal CG Co
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Individual
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Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
    • C03C17/34—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions
    • C03C17/36—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal
    • C03C17/3602—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal the metal being present as a layer
    • C03C17/3615—Coatings of the type glass/metal/other inorganic layers, at least one layer being non-metallic
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
    • C03C17/34—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions
    • C03C17/36—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
    • C03C17/34—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions
    • C03C17/36—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal
    • C03C17/3602—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal the metal being present as a layer
    • C03C17/3618—Coatings of type glass/inorganic compound/other inorganic layers, at least one layer being metallic
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
    • C03C17/34—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions
    • C03C17/36—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal
    • C03C17/3602—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal the metal being present as a layer
    • C03C17/3626—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal the metal being present as a layer one layer at least containing a nitride, oxynitride, boronitride or carbonitride
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
    • C03C17/34—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions
    • C03C17/36—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal
    • C03C17/3602—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal the metal being present as a layer
    • C03C17/3639—Multilayers containing at least two functional metal layers
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
    • C03C17/34—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions
    • C03C17/36—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal
    • C03C17/3602—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal the metal being present as a layer
    • C03C17/3642—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal the metal being present as a layer the multilayer coating containing a metal layer
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
    • C03C17/34—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions
    • C03C17/36—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal
    • C03C17/3602—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal the metal being present as a layer
    • C03C17/3652—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal the metal being present as a layer the coating stack containing at least one sacrificial layer to protect the metal from oxidation
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
    • C03C17/34—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions
    • C03C17/36—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal
    • C03C17/3602—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal the metal being present as a layer
    • C03C17/3657—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal the metal being present as a layer the multilayer coating having optical properties
    • C03C17/366—Low-emissivity or solar control coatings
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C2217/00—Coatings on glass
    • C03C2217/70—Properties of coatings
    • C03C2217/78—Coatings specially designed to be durable, e.g. scratch-resistant

Abstract

The invention provides temperable high shading performance low-emissivity coatings. The invention also provides insulating glass units, monolithic panes, and other substrates bearing such coatings. Further, the invention provides methods of producing coated substrates by depositing coatings of th is nature.

Claims (49)

1. A transparent substrate bearing a temperable high shading performance low-emissivity coating comprising, in sequence outwardly:
(a) a first infrared-reflective film;
(b) a first high absorption blocker layer deposited directly over the first infrared-reflective film, the first high absorption blocker layer comprising niobium;
(c) a middle coat comprising a transparent dielectric nitride film deposited directly over the first high absorption blocker layer;
(d) a second infrared-reflective film;
(e) a second high absorption blocker layer deposited directly over the second infrared-reflective film, the second high absorption blocker layer comprising niobium; and (f) an outer coat comprising a transparent dielectric nitride film deposited directly over the second high absorption blocker layer;
wherein the first and second high absorption blocker layers have a combined thickness of greater than 50 angstroms.
2. The transparent substrate of claim 1 wherein the first and second high absorption blocker layers have a combined thickness of less than about 80.ANG..
3. The transparent substrate of claim 2 wherein the first and second infrared-reflective films have a combined thickness of between about 150.ANG. and about 260.ANG..
4. The transparent substrate of claim 1 wherein the transparent dielectric nitride film directly over the first high absorption blocker layer comprises silicon nitride.
5. The transparent substrate of claim 4 wherein the silicon nitride has a thickness of less than about 300.ANG..
6. The transparent substrate of claim 1 wherein the middle coat begins with the transparent dielectric nitride film directly over the first high absorption blocker layer and ends with a transparent dielectric oxide film directly beneath the second infrared-reflective layer.
7. The transparent substrate of claim 6 wherein the middle coat comprises a plurality of alternating nitride and oxide films.
8. The transparent substrate of claim 7 wherein the transparent dielectric nitride film directly over the first high absorption blocker layer is followed by the following sequence of intermediate films, moving outwardly: a first intermediate transparent dielectric oxide film, a second intermediate transparent dielectric nitride film, and a second intermediate transparent dielectric oxide film.
9. The transparent substrate of claim 8 wherein the second infrared-reflective film is deposited directly over said second intermediate transparent dielectric oxide film.
10. The transparent substrate of claim 1 wherein the transparent dielectric nitride film directly over the second high absorption blocker layer comprises silicon nitride.
11. The transparent substrate of claim 10 wherein the silicon nitride has a thickness of less than about 100.ANG.
12. The transparent substrate of claim 1 wherein the transparent dielectric nitride film directly over the second high absorption blocker layer is followed by the following sequence of outer films, moving outwardly: a titanium nitride layer, and an outermost silicon nitride layer.
13. The transparent substrate of claim 12 wherein the titanium nitride layer has a thickness of less than about 30.ANG..
14. The transparent substrate of claim 1 wherein the coating comprises an inner coat between the substrate and the first infrared-reflective film, the inner coat comprising at least one transparent dielectric film having an index of refraction of between about 1.7 and about 2.4.
15. The transparent substrate of claim 14 wherein the coating further includes a transparent base layer between the substrate and the inner coat, the transparent base layer comprising silicon dioxide deposited directly upon the substrate.
16. The transparent substrate of claim 1 wherein the coating has an emissivity of less than about 0.08.
17. 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, one of said inner surfaces bearing a tempered high shading performance low-emissivity coating comprising first and second infrared-reflective films and first and second high absorption blocker layers positioned respectively directly over the first and second infrared-reflective films, the first and second high absorption blocker layers comprising niobium, said coating including a middle coat comprising a transparent dielectric nitride film deposited directly over the first high absorption blocker layer and including an outer coat comprising a transparent dielectric nitride film deposited directly over the second high absorption blocker layer, the insulating glass unit having a total visible transmittance of less than about 0.45.
18. The insulating glass unit of claim 17 wherein the total visible transmittance is between about 0.35 and about 0.43.
19. The insulating glass unit of claim 17 wherein the coating has an emissivity of less than about 0.08.
20. The insulating glass unit of claim 17 wherein the insulating glass unit has an exterior visible reflectance of less than about 15%.
21. The insulating glass unit of claim 20 wherein the exterior visible reflectance is less than about 13%.
22. The insulating glass unit of claim 17 wherein the insulating glass unit has an exterior reflected color characterized by an a h color coordinate of between about -0.75 and about -3.25 and a b h color coordinate of between about -2.25 and about -4.75.
23. The insulating glass unit of claim 17 wherein the first and second infrared-reflective films have a combined thickness of between about 150.ANG. and about 260.ANG., and wherein the first and second high absorption blocker layers have a combined thickness of greater than 50.ANG. but less than about 80.ANG..
24. The insulating glass unit of claim 23 wherein the coating comprises, in sequence outwardly:
(a) a silicon dioxide base layer;
(b) an inner coat comprising at least one transparent dielectric film;
(c) the first infrared-reflective film;
(d) the first high absorption blocker layer;
(e) the middle coat;
(f) the second infrared-reflective film;
(g) the second high absorption blocker layer; and (h) the outer coat.
25. The insulating glass unit of claim 24 wherein the inner coat has an optical thickness of between about 150.ANG. and about 450.ANG., the middle coat has an optical thickness of between about 1200.ANG. and about 1800.ANG., and the outer coat has an optical thickness of between about 445.ANG. and about 605.ANG..
26. 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, one of said inner surfaces bearing a tempered high shading performance low-emissivity coating comprising first and second infrared-reflective films and first and second high absorption blocker layers positioned respectively directly over the first and second infrared-reflective films, the first and second high absorption blocker layers comprising niobium, said coating including a middle coat comprising a transparent dielectric nitride film deposited directly over the first high absorption blocker layer and including an outer coat comprising a transparent dielectric nitride film deposited directly over the second high absorption blocker layer, the insulating glass unit having a solar heat gain coefficient of less than about 0.4.
27. The insulating glass unit of claim 26 wherein the solar heat gain coefficient is less than about 0.3.
28. The insulating glass unit of claim 26 wherein the coating has an emissivity of less than about 0.08.
29. The insulating glass unit of claim 26 wherein the insulating glass unit has an exterior visible reflectance of less than about 15%.
30. The insulating glass unit of claim 29 wherein the exterior visible reflectance is less than about 13%.
31. The insulating glass unit of claim 26 wherein the insulating glass unit has an exterior reflected color characterized by an a,, color coordinate of between about -0.75 and about -3.25 and a b h color coordinate of between about -2.25 and about -4.75.
32. The insulating glass unit of claim 26 wherein the first and second infrared-reflective films have a combined thickness of between about 150.ANG. and about 260.ANG., and wherein the first and second high absorption blocker layers have a combined thickness of greater than 50.ANG. but less than about 80.ANG..
33. The insulating glass unit of claim 32 wherein the coating comprises, in sequence outwardly:
(a) a silicon dioxide base layer;
(b) an inner coat comprising at least one transparent dielectric film;
(c) the first infrared-reflective film;
(d) the first high absorption blocker layer;
(e) the middle coat;
(f) the second infrared-reflective film;
(g) the second high absorption blocker layer; and (h) the outer coat.
34. The insulating glass unit of claim 33 wherein the inner coat has an optical thickness of between about 150.ANG. and about 450.ANG., the middle coat has an optical thickness of between about 1200.ANG. and about 1800.ANG., and the outer coat has an optical thickness of between about 445.ANG. and about 605.ANG..
35. A method of producing coated substrates, the method comprising providing a pane having generally-opposed major surfaces and depositing upon one of said major surfaces a temperable high shading performance low-emissivity coating comprising, in sequence outwardly:
(a) a first infrared-reflective film;
(b) a first high absorption blocker layer deposited directly over the first infrared-reflective film, the first high absorption blocker layer comprising niobium;
(c) a middle coat comprising a transparent dielectric nitride film deposited directly over the first high absorption blocker layer;
(d) a second infrared-reflective film;
(e) a second high absorption blocker layer deposited directly over the second infrared-reflective film, the second high absorption blocker layer comprising niobium; and (f) an outer coat comprising a transparent dielectric nitride film deposited directly over the second high absorption blocker layer;
wherein the first and second high absorption blocker layers are deposited at a combined thickness of greater than 50 angstroms.
36. The method of claim 35 wherein the first and second high absorption blocker layers are deposited at a combined thickness of less than about 80.ANG..
37. The method of claim 36 wherein the first and second infrared-reflective films are deposited at a combined thickness of between about 150.ANG. and about 260.ANG..
38. The method of claim 35 wherein the transparent dielectric nitride film directly over the first high absorption blocker layer is deposited as a film comprising silicon nitride.
39. The method of claim 38 wherein the silicon nitride is deposited at a thickness of less than about 300.ANG..
40. The method of claim 35 wherein the deposition of the middle coat begins with depositing the transparent dielectric nitride film directly over the first high absorption blocker layer and ends with depositing a transparent dielectric oxide film directly beneath the second infrared-reflective layer.
41. The method of claim 40 wherein the deposition of the middle coat comprises depositing a plurality of alternating nitride and oxide films.
42. The method of claim 41 wherein, following deposition of the transparent dielectric nitride film directly over the first high absorption blocker layer, the method comprises depositing the following sequence of intermediate films, moving outwardly: a first intermediate transparent dielectric oxide film, a second intermediate transparent dielectric nitride film, and a second intermediate transparent dielectric oxide film.
43. The method of claim 42 wherein the second infrared-reflective film is deposited directly over said second intermediate transparent dielectric oxide film.
44. The method of claim 35 wherein the transparent dielectric nitride film directly over the second high absorption blocker layer is deposited as a film comprising silicon nitride.
45. The method of claim 44 wherein the silicon nitride is deposited at a thickness of less than about 100.ANG..
46. The method of claim 35 wherein, following deposition of the transparent dielectric nitride film directly over the second high absorption blocker layer, the method comprises depositing the following sequence of outer films, moving outwardly: a titanium nitride layer, and an outermost silicon nitride layer.
47. The method of claim 46 wherein the titanium nitride layer is deposited at a thickness of less than about 30.ANG..
48. The method of claim 35 wherein the method comprises depositing an inner coat between the substrate and the first infrared-reflective film, the inner coat comprising at least one transparent dielectric film having an index of refraction of between about 1.7 and about 2.4.
49. The method of claim 48 wherein the method further comprises depositing a transparent base layer between the substrate and the inner coat, the transparent base layer comprising silicon dioxide deposited directly upon the substrate.
CA2493803A 2002-07-31 2003-07-31 Temperable high shading performance coatings Expired - Lifetime CA2493803C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US40029202P 2002-07-31 2002-07-31
US60/400,292 2002-07-31
PCT/US2003/024132 WO2004011382A2 (en) 2002-07-31 2003-07-31 Temperable high shading performance coatings

Publications (2)

Publication Number Publication Date
CA2493803A1 true CA2493803A1 (en) 2004-02-05
CA2493803C CA2493803C (en) 2011-09-27

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CA2493803A Expired - Lifetime CA2493803C (en) 2002-07-31 2003-07-31 Temperable high shading performance coatings

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US (2) US7138182B2 (en)
EP (1) EP1527028B1 (en)
JP (1) JP4298654B2 (en)
AU (1) AU2003268049A1 (en)
CA (1) CA2493803C (en)
WO (1) WO2004011382A2 (en)

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