Filtering antisolar and heat insulating glass

• US 3,885,855 A
• Filed: 08/10/1972
• Issued: 05/27/1975
• Est. Priority Date: 08/16/1971
• Status: Expired due to Term

• Current Assignee: Daniel M. Gross
• Original Assignee: Daniel M. Gross
• Inventors: Gross, Daniel M.
• Primary Examiner(s): Wibert, Ronald L.
• Assistant Examiner(s): Koren, Matthew W.
• Application Number:
  US05/279,472
• Time in Patent Office: 1,020 Days
• Field of Search: 350/1,164,165,166 252/300 117/33.3
• US Class Current: 359/360
• CPC Class Codes: C03C 17/22 with other inorganic material C03C17/34, C03C17/44 take precedence
• CPC Class Codes: C03C 17/225 Nitrides
• CPC Class Codes: C03C 17/23 Oxides C03C17/02 takes precedence
• CPC Class Codes: C03C 17/3423 at least one of the coatings comprising a suboxide
• CPC Class Codes: C03C 17/3435 comprising a nitride, oxynitride, boronitride or carbonitride
• CPC Class Codes: C03C 17/3441 comprising carbon, a carbide or oxycarbide
• CPC Class Codes: C03C 17/3488 comprising a boride or phosphide
• CPC Class Codes: C03C 2217/21 Oxides
• CPC Class Codes: C03C 2217/281 Nitrides
• CPC Class Codes: C03C 2217/282 Carbides, silicides
• CPC Class Codes: C03C 2217/283 Borides, phosphides
• CPC Class Codes: C03C 2217/29 Mixtures
• CPC Class Codes: C03C 2218/152 by cvd
• CPC Class Codes: C03C 2218/154 by sputtering
• CPC Class Codes: C03C 2218/365 Coating different sides of a glass substrate
• CPC Class Codes: C03C 3/091 containing aluminium

Abstract

A filtering antisolar and heat insulating glass formed of a support material capable of transmitting at least a part of the visible light and a coating of filtering material on at least one side of the support material, said filtering material comprising a compound of an element of the groups IVa, Va and VIa of the Periodic Table of elements and one of the metalloids boron, carbon, nitrogen and oxygen, said compound being in a state in which its peripheral electrons are displaced as in the metal state and having at least partly covalent bonds, said coating of filtering material being continuous or coalescent.

Claims

1. FILTERING ANTISOLAR AND HEAT INSULATING GLASS, COMPRISING A SUPPORT INCLUDING AT LEAST ONE PANEL OF LIGHT-TRANSMITTING MATERIAL CAPABLE OF TRANSMITTING AT LEAST A PART OF THE SPECTRUM OF VISIBLE LIGHT, AND AT LEAST ONE COALESCENT LAYER OF FILTERING MATERIAL APPLIED TO AND ADHERING ON AT LEAST ONE FACE OF THE PANEL, SAID FILTERING MATERIAL COMPRISING AT LEAST ONE COMPOUND SELECTED FROM THE BORIDES, CARBIDES, NITRIDES, CARBONITRIDES AND SUBOXIDES OF AT LEAST ONE OF THE FOLLOWING METALS:

TITANIUM, ZIRCONIUM, HAFNIUM, VANADIUM, NIOBIUM, TANTALUM, CHROMIUM, MOLYBDENUM AND TUNGSTEN, AND WHEREIN THE ELECTRIC RESISTANCE OF A SQUARE-SHAPED PART OF SAID LAYER OF FILTERIN MATERIAL, HAVING A THICKNESS OF BETWEEN 200 AND 1000 A, HAS AN ELECTRICAL RESISTANCE AT MOST EQUAL TO 200 OHMNS AT AMBIENT TEMPERATURES AND 400 OHMS AT -195*C.

2. Glass according to claim 1, wherein said compound is a nitride selected from the group consisting of TiN, ZrN, HfN, VN, NbN, TaN, CrN and Cr3N4.

3. Glass according to claim 1, wherein said compound is a carbide selected from the group consisting of ZrC, HfC, TaC and WC.

4. Glass according to claim 1, wherein said compound is a boride selected from the group consisting of Zr3B4, HfB, VB2, NbB2, TaB2 and TiB2.

5. Glass according to claim 1, wherein said compound is a suboxide selected from the group consisting of TiO, VO and NbO.

6. Glass according to claim 1, wherein at least a part of said compound is in the crystal form.

7. Glass according to claim 1, wherein said panel is composed of mineral glass.

8. Glass according to claim 1, wherein said panel comprises a glass absorbing at least a part of radiation having a wavelength between 0.7 and 2 micron.

9. Glass according to claim 1, wherein the layer of filtering material comprises a dispersion of said compound in a coalescent layer comprising at least one semiconductor having a high conduction electron density.

10. Glass according to claim 9, wherein said semiconductor is selected from the oxides SnO2, CdO, ZnO, SnO, In2O3 and Ga2O3 and the mixed oxides formed from at least two of said oxides.

11. Glass according to claim 1, further comprising means for heating by the Joule effect.

12. Glass according to claim 1, wherein said layer of filtering material comprises a continuous layer.

13. Filtering antisolar and heat insulating glass, comprising;

a support including at least one panel of light-transmissive glass which is absorptive of at least a part of radiation having a wave length between 0.7 and 2 microns, said glass being a borosilicate glass containing at least one oxide selected from the group consisting of FeO, NiO and CoO; and

at least one coalescent layer of filtering material applied to and adhering on at least one face of the panel said filtering material comprising at least one compound selected from the carbides, borides and carbonitrides of a metal selected from the group consisting of titanium, zirconium, hafnium, vanadium, niobium, tantalum, chromium, molybdenum and tungsten and wherein the electric resistance of a square-shaped part of said layer having a thickness of between 200 and 1000 A has an electrical resistance at most equal to 200 Ohms at ambient temperatures.

14. Filtering antisolar and heat insulating glass, comprising;

a support including at least one panel of light-transmissive material transmissive of at least a part of the spectrum of visible light;

at least one coalescent layer of filtering material applied to at least one face of the panel, said filtering material comprising at least one compound selected from the carbides, borides and carbonitrides of a metal selected from the group consisting of titanium, zirconium, hafnium, vanadium, niobium, tantalum, chromium, molybdenum and tungsten and wherein the electric resistance of a square-shaped part of saiD layer having a thickness of between 200 and 1000 A has an electrical resistance at most equal to 200 Ohms at ambient temperature; and

a layer of additional filtering material absorptive of at least a part of radiation having a wave length between 0.7 and 2 micron.

15. Glass acccording to claim 14, wherein said additional filtering material comprises at least one oxide selected from the group consisting of FeO, NiO and CoO.

16. Glass according to claim 14, wherein said additional filtering material comprises a semiconductor having a high conduction electron density.

17. Glass according to claim 16, wherein said semiconductor is selected from the oxides SnO2, CdO, ZnO, SnO, In2O3 and Ga2O3 and the mixed oxides formed from at least two of said oxides.

18. Glass according to claim 14, wherein the layer of additional filtering material covers the panel face not coated with the layer of filtering material having said electrical resistance of a square-shaped part at most equal to 200 Ohms at ambient temperature.

19. Glass according to claim 14, wherein the layer of additional filtering material is interposed between the face of the panel and the layer of filtering material having said electrical resistance of a square-shaped part at most equal to 200 Ohms at ambient temperature.

20. Filtering antisolar and heat insulating glass, comprising;

a support including at least one panel of light-transmitting material transmissive of at least a part of the spectrum of visible light; and

at least one coalescent layer of filtering material applied to and adhering on at least one face of the panel, said filtering material comprising at least one carbonitride selected from the group consisting of TiN0.7C 0.3 and NbN0.4C0.6 and wherein the electrical resistance of a square-shaped part of said layer having a thickness of between 200 and 1000 A has an electrical resistance at most equal to 200 Ohms at ambient temperature.

21. Filtering antisolar and heat insulating glass, comprising;

a support including at least one panel of light-transmitting material transmissive of at least a part of the spectrum of visible light; and

at least one coalescent layer of filtering material applied to and adhering on at least one face of the panel, said filtering material comprising at least one compound selected from the carbides, borides, and carbonitrides of a metal selected from the group consisting of titanium, zirconium, hafnium, vanadium, niobium, tantalum, chromium, molybdenum and tungsten and wherein the electric resistance of a square-shaped part of said layer of filtering material, having a thickness of between 200 and 1000 A, has an electrical resistance at most equal to 200 Ohms at ambient temperatures and 400 Ohms at - 195* C.

22. Glass according to claim 21 wherein said compound is a carbide selected from the group consisting of ZrC, HfC, TaC and WC.

23. Glass according to claim 21 wherein said compound is a boride selected from the group consisting of Zr3B4, HfB, VB2, NbB2, TaB2 and TiB2.

24. Glass according to claim 21 wherein at least a part of said compound is in a crystal form.

25. Glass according to claim 21 wherein said panel is composed of mineral glass.

26. Glass according to claim 21 wherein said panel comprises a glass absorptive of at least a part of radiation having a wave length between 0.7 and 2 microns.

27. Glass according to claim 26 wherein said absorptive glass is a borosilicate glass containing at least one oxide selected from the group consisting of FeO, NiO and CoO.

28. Glass according to claim 21 having a layer of additional filtering material applied to the panel and absorptive of at least a part of radiation having a wavelength between 0.7 and 2 microns.

29. Glass according to claim 28 wherein said additional filtering material comprises at least one oxide selected from the group consisting of FeO, NiO and CoO.

30. Glass according to claim 28 wherein said additional filtering material comprises a semiconductor having a high conduction electron density.

31. Glass according to claim 30 wherein said semiconductor is selected from the oxides SnO2, CdO, ZnO, SnO, In2O3 and Ga2o3 and the mixed oxides formed from at least two of said oxides.

32. Glass according to claim 28 wherein the layer of additional filtering material covers a face of said panel not coated with said layer of filtering material comprising said compound said square-shaped part of which has said electric resistance at most equal 200 Ohms at ambient temperatures.

33. Glass according to claim 28 wherein the layer of additional filtering material is interposed between a face of said panel and said layer of filtering material comprising said compound said square-shaped part of which has said electric resistance of at most 200 Ohms at ambient temperatures.

34. Glass according to claim 21 wherein said layer of filtering material comprises a dispersion of said compound in a coalescent layer comprising at least one semiconductor having a high conduction electron density.

35. Glass according to claim 34 wherein said semiconductor is selected from the oxides SnO2, CdO, ZnO, SnO, In2O3 and Ga2O3 and the mixed oxides formed from at least two of said oxides.

36. Glass according to claim 21 further comprising means for heating said panel by the Joule effect.

37. Glass according to claim 21 wherein said layer of filtering material comprises a continuous layer.