Coated substrate

Patent metadata

Field	Value
Publication number	US-11008248-B2
Application number	US-201816609986-A
Country	US
Kind code	B2
Filing date	Apr 27, 2018
Priority date	May 4, 2017
Publication date	May 18, 2021
Grant date	May 18, 2021

Abstract

The present invention relates to a coated substrate comprising: a substrate; a soft coating provided on at least a part of at least one face of the substrate; a protective sol-gel coating provided on at least a part of said face above the soft coating, to a process for making such coated substrate and to glazing units comprising such coated substrate.

First claim

The invention claimed is:

1. A coated substrate comprising:
a substrate,
a first coating comprising one or more layers deposited by physical vapor deposition provided on at least a part of at least one face of the substrate, wherein the first coating is a solar control or insulating low E coating, and
a sol-gel coating provided on at least a part of said face above the first coating,
wherein the sol-gel coating comprises a mixture of titanium oxide, zirconium oxide, silicon oxide and optionally bismuth oxide and/or cerium oxide in theoretical weight ratios of:
titanium oxide TiO 2 /silicon oxide SiO 2 ranging from 0.10 to 3,
zirconium oxide ZrO 2 /silicon oxide SiO 2 ranging from 0.10 to 3,
bismuth oxide Bi 2 O 3 /silicon oxide SiO 2 ranging from 0 to 0.03, and
cerium oxide CeO 2 /silicon oxide SiO 2 ranging from 0 to 0.03.

2. The coated substrate according to claim 1 , wherein the sol-gel coating is provided on at least a part of the face of the substrate provided with the first coating and in direct contact with the first coating.

3. The coated substrate according to claim 1 , wherein the sol-gel coating is provided at least substantially on the entire first coating and in direct contact with the first coating.

4. The coated substrate according to claim 1 , wherein the sol-gel coating comprises a mixture of titanium oxide, zirconium oxide, silicon oxide, and bismuth oxide in theoretical weight ratios of:
titanium oxide TiO 2 /silicon oxide SiO 2 ranging from 0.10 to 3,
zirconium oxide ZrO 2 /silicon oxide SiO 2 ranging from 0.10 to 3, and
bismuth oxide Bi 2 O 3 /silicon oxide SiO 2 ranging from 0 to 0.03.

5. The coated substrate according to claim 1 , wherein the sol-gel coating comprises a mixture of titanium oxide, zirconium oxide, silicon oxide, and cerium oxide in theoretical weight ratios of:
titanium oxide TiO 2 /silicon oxide SiO 2 ranging from 0.10 to 3,
zirconium oxide ZrO 2 /silicon oxide SiO 2 ranging from 0.10 to 3, and
cerium oxide CeO 2 /silicon oxide SiO 2 ranging from 0 to 0.03.

6. The coated substrate according to claim 1 , wherein the sol-gel coating comprises a mixture of titanium oxide, zirconium oxide, silicon oxide, and optionally bismuth oxide and/or cerium oxide in theoretical weight ratios of:
titanium oxide TiO 2 /silicon oxide SiO 2 ranging from 0.25 to 2.5,
zirconium oxide ZrO 2 /silicon oxide SiO 2 ranging from 0.25 to 2.5,
bismuth oxide Bi 2 O 3 /silicon oxide SiO 2 ranging from 0 to 0.02, and
cerium oxide CeO 2 /silicon oxide SiO 2 ranging from 0 to 0.02.

7. The coated substrate according to claim 1 , wherein the sol-gel coating comprises a mixture of titanium oxide, zirconium oxide, silicon oxide, and optionally bismuth oxide and/or cerium oxide in theoretical weight ratios of:
titanium oxide TiO 2 /silicon oxide SiO 2 ranging from 0.5 to 2,
zirconium oxide ZrO 2 /silicon oxide SiO 2 ranging from 0.5 to 2,
bismuth oxide Bi 2 O 3 /silicon oxide SiO 2 ranging from 0 to 0.01, and
cerium oxide CeO 2 /silicon oxide SiO 2 ranging from 0 to 0.01.

8. The coated substrate according to claim 1 , wherein the sol-gel coating comprises a mixture of titanium oxide, zirconium oxide, silicon oxide, and optionally bismuth oxide and/or cerium oxide in theoretical weight ratios of:
titanium oxide TiO 2 /silicon oxide SiO 2 ranging from 1 to 1.5,
zirconium oxide ZrO 2 /silicon oxide SiO 2 ranging from 1 to 1.5,
bismuth oxide Bi 2 O 3 /silicon oxide SiO 2 ranging from 0 to 0.03, and
cerium oxide CeO 2 /silicon oxide SiO 2 ranging from 0 to 0.03.

9. The coated substrate according to claim 1 , wherein a thickness of the sol-gel coating is from 50 to 500 nm.

10. The coated substrate according to claim 1 , wherein the sol gel coating is formed by applying a sol gel solution on at least one face of the substrate.

11. The coated substrate according to claim 1 , wherein the substrate is a glass substrate.

12. The coated substrate according to claim 11 , wherein the glass substrate is heat treated.

13. The coated substrate according to claim 12 , wherein the glass substrate is tempered.

14. A glazing unit comprising at least one coated substrate according to claim 11 , wherein a face of the coated substrate provided with the first coating and the sol-gel coating is facing an outside of the unit.

15. The glazing unit according to claim 14 , wherein the glazing unit is a single glazing unit comprising one glass panel.

16. The glazing unit according to claim 14 , wherein the glazing unit is a multiple glazing unit comprising at least two glass panels separated by an interspace.

17. A process for making the coated substrate according to claim 1 , comprising:
a) forming the first coating on at least a part of at least one face of the substrate,
b) applying the first sol-gel solution on at least a part of said face above the first coating, and
c) curing the sol-gel solution to obtain a sol-gel coating comprising a mixture of titanium oxide, zirconium oxide, silicon oxide and optionally bismuth oxide and/or cerium oxide in theoretical weight ratios of:
titanium oxide TiO 2 /silicon oxide SiO 2 ranging from 0.10 to 3,
zirconium oxide ZrO 2 /silicon oxide SiO 2 ranging from 0.10 to 3,
bismuth oxide Bi 2 O 3 /silicon oxide SiO 2 ranging from 0 to 0.03, and
cerium oxide CeO 2 /silicon oxide SiO 2 ranging from 0 to 0.03.

18. The process according to claim 17 , wherein the substrate is a glass substrate.

19. The process according to claim 18 , further comprising, after the curing, d) heating the glass substrate.

20. The process according to claim 19 , wherein the heating of the glass substrate is a tempering step.

Assignees

• Agc Glass Europe
• Agc Inc
• Agc Glass Company North America
• Agc Vidros Do Brasil Ltda

Inventors

• Bosgaerd Eric
• Peyroux Eugenie

Classifications

• C03C2218/156

  by magnetron sputtering · CPC title

• E06B2009/2417

  Light path control; means to control reflection · CPC title

• E06B9/24

  Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; {Slat blinds}(operating, guiding or securing devices or arrangements for roll-type closures E06B9/56; free-hanging flexible screens A47H23/00) · CPC title

• C03C17/366 Primary

  Low-emissivity or solar control coatings · CPC title

• C03C2218/113

  by sol-gel processes · CPC title