Method of manufacturing a glazing panel

• US 20010031366A1
• Filed: 04/10/2001
• Published: 10/18/2001
• Est. Priority Date: 06/09/1995
• Status: Active Grant

• Current Assignee: Alain Schutz, Michel Hannotiau, Philippe Legrand, Robert Terneu
• Original Assignee: Alain Schutz, Michel Hannotiau, Philippe Legrand, Robert Terneu
• Inventors: Schutz, Alain, Legrand, Philippe, Hannotiau, Michel, Terneu, Robert
• Granted Patent: US 7,037,555 B2
• Time in Patent Office: Days
• US Class Current: 428/432
• 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; and

at least one coating layer which is provided on the vitreous substrate which is one of pyrolytically formed by chemical vapor deposition or a spray-formed pyrolytically, said coating layer consisting essentially of tin and antimony in a Sb/Sn molar ratio of up to 0.14, and, whereby the glazing panel has one of;

(a) a solar factor (FS) of less than 70% or

a luminous transmittance (TL) of less than 35% and a selectivity (TL/TE) of at least 1.3.

2. A glazing panel comprising:

a vitreous substrate; and

at least one coating layer which is provided on the vitreous substrate which is pyrolytically formed by chemical vapor deposition, said coating layer consisting essentially of tin and antimony in a Sb/Sn molar ratio of from 0.01 to 0.14, and,

whereby the glazing panel has a solar factor (FS) of less than 70%.

3. The glazing panel according to

claim 2

, wherein the-Sb/Sn molar ratio is at least 0.03.

4. The glazing panel according to

claim 3

, wherein the Sb/Sn molar ratio is at least 0.05.

5. The glazing panel according to

claim 2

, wherein the Sb/Sn molar ratio ranges between 0.01 and 0.12.

6. The glazing panel according to

claim 5

, wherein the Sb/Sn molar ratio images between 0.03 and 0.07.

7. The glazing panel according to

claim 2

, further comprising an intermediate haze-reducing coating layer positioned between the vitreous substrate and the tin/antimony oxide coating layer.

8. The glazing panel according to

claim 7

, wherein the intermediate haze-reducing coating layer comprises silicon oxide.

9. The glazing panel according to

claim 2

, wherein the solar factor is less than 60%.

10. The glazing panel according to

claim 9

, wherein the solar factor is less than 50%.

11. The glazing panel according to

claim 2

, wherein the glazing panel has a luminous transmittance (TL) ranging from 40 to 65%.

12. The glazing panel according to

claim 2

, wherein the tin/antimony oxide coating has a thickness of ranging from 100 to 500 nm.

13. The glazing panel according to

claim 12

, wherein the tin/antimony oxide coating layer has a thickness ranging from 250 to 450 nm.

14. The glazing panel according to

claim 2

, wherein the tin/antimony oxide layer coating layer is an exposed coating layer.

15. The glazing panel according to

claim 2

, comprising only one said tin/antimony oxide coating layer.

16. A glazing panel comprising:

a vitreous substrate; and

a coating layer which is provided on the vitreous substrate, said coating layer comprising a single layer of tin oxide doped with antimony which is pyrolytically formed by chemical vapor deposition, the single layer of tin doped with antimony consisting essentially of tin and antimony in a Sb/Sn molar ratio of from 0.01 to 0.14 and,

whereby the glazing panel has a solar factor (FS) of less than 70%.

17. The glazing panel according to

claim 16

, further comprising an intermediate haze-reducing layer positioned between the vitreous substrate and the single layer of tin oxide doped with antimony.

18. A glazing panel comprising:

a vitreous substrate; and

a spray-formed pyrolytic tin/antimony oxide coating layer which is provided on the vitreous substrate, which has a thickness of at least 400 nm and which consists essentially of tin and antimony in a Sb/Sn molar ratio of from 0.05 to 0.14 wherein the glazing panel has a luminous transmittance (TL) of less than 35% and a selectivity (TL/TE) of at least 1.3.

19. The glazing panel according to

claim 18

, wherein the vitreous substrate is made of colored glass.

20. The glazing panel according to

claim 18

, wherein the tin/antimony oxide coating has a thickness ranging from 400 nm to 800nm.

21. The glazing panel according to

claim 18

, wherein the tin/antimony oxide coating has a thickness ranging from 450 nm to 700nm.

22. The glazing panel according to

claim 18

, wherein the glazing panel has a selectivity of at least 1.5.

23. The glazing panel according to

claim 18

, wherein the glazing panel has an energy transmission factor (TB) of less than 15%.

24. The glazing panel according to

claim 18

, wherein the glazing panel has an energy transmission (TE) of less than 10%.

25. A glazing panel according to

claim 18

, wherein the Sb/Sn molar ratio ranges from 0.08 to 0.14.

26. The glazing panel according to

claim 18

, wherein the spray-formed pyrolytic tin/antimony oxide coating layer is a single layer.

27. The glazing panel according to

claim 18

, wherein the spray-formed pyrolytic tin/antimony oxide coating layer is an exposed coating layer.

28. The glazing panel according to

claim 18

, wherein the glazing panel has a reflectivity of visible light (RL) which is lower than 12%.

30. The solar protection glazing panel according to claim 26, further comprising an intermediate haze-reducing layer positioned between the vitreous substrate and the single layer of tin oxide doped with antimony.

29. A solar protection glazing panel comprising:

a vitreous substrate; and

a coating layer provided on the vitreous substrate which comprises a single layer of tin oxide doped with antimony,

wherein said single layer of tin oxide doped with antimony is pyrolytically formed by spraying a liquid precursor solution, has a thickness of at least 400 nm and consists essentially of tin and antimony in a Sb/Sn molar ratio of from 0.05 to 0.14 and wherein the glazing panel has a luminous transmittance (TL) of less than 35% and a selectivity (TL/TE) of at least 1.3.