Glazing panel having solar screening properties

• US 7,622,186 B2
• Filed: 03/13/2006
• Issued: 11/24/2009
• Est. Priority Date: 06/09/1995
• Status: Expired due to Fees

• Current Assignee: AGC Flat Glass (AGC, Inc.)
• Original Assignee: AGC Flat Glass (AGC, Inc.)
• Inventors: Schutz, Alain, Legrand, Philippe, Hannotiau, Michel, Terneu, Robert
• Primary Examiner(s): TURNER, ARCHENE A
• Application Number:
  US11/374,525
• Publication Number:
  US 20060154090A1
• Time in Patent Office: 1,352 Days
• Field of Search: 359/580, 359/589, 428/336, 428/697, 428/699, 428/701, 428/702, 428/432
• US Class Current: 428/336
• CPC Class Codes: C03C 17/2453 Coating containing SnO2
• CPC Class Codes: C03C 17/253 Coating containing SnO2
• CPC Class Codes: C03C 17/3417 all coatings being oxide coatings
• CPC Class Codes: C03C 17/3423 at least one of the coatings comprising a suboxide
• CPC Class Codes: C03C 2217/211 SnO2
• CPC Class Codes: C03C 2217/23 Mixtures
• CPC Class Codes: C03C 2217/244 with Sb
• CPC Class Codes: C03C 2218/112 by spraying
• CPC Class Codes: C03C 2218/15 from the vapour phase
• CPC Class Codes: C03C 2218/152 by cvd
• CPC Class Codes: Y10T 428/265 1 mil or less

Abstract

A glazing panel having beneficial anti-solar properties comprises a vitreous substrate carrying a tin/antimony oxide coating layer containing tin and antimony in a Sb/Sn molar ratio of from 0.01 to 0.14. In one application the coated substrate has a solar factor FS of less than 70% and the panel is formed by chemical vapor deposition from a reactant mixture comprising a source of tin and a source of antimony. In another application it is particularly suitable for use in vehicle glazing, in particular in vehicle roof windows, and the coated substrate has a spray-formed pyrolytic tin/antimony oxide coating having a thickness of at least 400 nm and, whereby the coated substrate has a luminous transmittance (TL) of less than 35% and a selectivity (TL/TE) of at least 1.3.

Claims

1. A glazing panel comprising a vitreous substrate carrying a tin/antimony oxide coating layer containing tin and antimony in a Sb/Sn molar ratio of from 0.01 to 0.5, the said coating layer having been formed by chemical vapor deposition, whereby the so-coated substrate has a solar factor (FS) of less than 70% and a luminous transmittance (TL) of less than 70%.

2. A glazing panel according to claim 1, wherein the Sb/Sn molar ratio ranges from 0.03 to 0.5.

3. A glazing panel according to claim 1, wherein the Sb/Sn molar ratio ranges from 0.05 to 0.5.

4. A glazing panel according to claim 1, wherein the Sb/Sn molar ratio ranges from 0.03 to 0.21.

5. A glazing panel according to claim 1, wherein the Sb/Sn molar ratio ranges from 0.03 to 0.15.

6. A glazing panel according to claim 1, wherein the Sb/Sn molar ratio ranges from 0.03 to 0.07.

7. A glazing panel according to claim 1, wherein at least one intermediate coating layer is positioned between the substrate and the tin/antimony oxide coating layer, the at least one intermediate coating layer being selected from the group consisting of a haze-reducing coating layer and an anti-reflection layer.

8. A glazing panel according to claim 1, wherein at least one intermediate coating layer is positioned between the substrate and the tin/antimony oxide coating layer, the at least one intermediate coating layer being comprised of one of SiO₂ and SiO_x.

9. A glazing panel according to claim 1, wherein the solar factor is less than 60%.

10. A glazing panel according to claim 1, having a luminous transmittance of between 40 and 65%.

11. A glazing panel according to claim 1, wherein the said tin/antimony oxide coating has a thickness of from 100 to 500 nm.

12. A glazing panel according to claim 1, wherein the tin/antimony oxide coating has a thickness of from 250 to 450 nm.

13. A glazing panel according to claim 1, wherein the tin/antimony oxide coating layer is an exposed coating layer.

14. A glazing panel according to claim 1, wherein the vitreous substrate is selected from the group consisting of a clear sheet of glass and a colored sheet of glass.

15. A glazing panel comprising a vitreous substrate carrying a tin/antimony oxide coating layer containing tin and antimony in a Sb/Sn molar ratio of from 0.03 to 0.5, the said coating layer having been formed by chemical vapor deposition, whereby the so-coated substrate has a solar factor (FS) of less than 70%.

16. A glazing panel according to claim 15, wherein the Sb/Sn molar ratio ranges from 0.05 to 0.5.

17. A glazing panel according to claim 15, wherein the Sb/Sn molar ratio ranges from 0.03 to 0.21.

18. A glazing panel according to claim 15, wherein the Sb/Sn molar ratio ranges from 0.03 to 0.15.

19. A glazing panel according to claim 15, wherein the Sb/Sn molar ratio ranges from 0.03 to 0.07.

20. A glazing panel according to claim 15, wherein at least one intermediate coating layer is positioned between the substrate and the tin/antimony oxide coating layer, the at least one intermediate coating layer being selected from the group consisting of a haze-reducing coating layer and an anti-reflection layer.

21. A glazing panel according to claim 15, wherein at least one intermediate coating layer is positioned between the substrate and the tin/antimony oxide coating layer, the at least one intermediate coating layer being comprised of one of SiO₂ and SiO_x.

22. A glazing panel according to claim 15, wherein the solar factor is less than 60%.

23. A glazing panel according to claim 15, having a luminous transmittance (TL) of less than 70%.

24. A glazing panel according to claim 15, having a luminous transmittance of between 40 and 65%.

25. A glazing panel according to claim 15, wherein the said tin/antimony oxide coating has a thickness of from 100 to 500 nm.

26. A glazing panel according to claim 15, wherein the tin/antimony oxide coating has a thickness of from 250 to 450 nm.

27. A glazing panel according to claim 15, wherein the tin/antimony oxide coating layer is an exposed coating layer.

28. A glazing panel according to claim 15, wherein the vitreous substrate is selected from the group consisting of a clear sheet of glass and a colored sheet of glass.

29. A glazing panel comprising a vitreous substrate carrying, in order, an intermediate haze-reducing coating layer and a tin/antimony oxide coating layer containing tin and antimony in a Sb/Sn molar ratio of from 0.03 to 0.15, the said tin/antimony oxide coating layer having been formed by chemical vapor deposition and having a thickness of from 100 to 470 nm, whereby the so-coated substrate has a solar factor (FS) of less than 70% and a luminous transmittance (TL) of less than 70%.

30. A glazing panel according to claim 29, wherein the Sb/Sn molar ratio ranges from 0.03 to 0.07.

31. A glazing panel according to claim 29, wherein the intermediate haze-reducing coating layer comprises of one of SiO₂ and SiO_x.

32. A glazing panel according to claim 29, wherein the solar factor is less than 60%.

33. A glazing panel according to claim 29, having a luminous transmittance of between 40 and 65%.

34. A glazing panel according to claim 29, wherein the tin/antimony oxide coating has a thickness of from 250 to 450 nm.

35. A glazing panel according to claim 29, wherein the tin/antimony oxide coating layer is an exposed coating layer.

36. A glazing panel according to claim 29, wherein the vitreous substrate is selected from the group consisting of a clear sheet of glass and a colored sheet of glass.