Solar control coating for laminated glazing

Patent metadata

Field	Value
Publication number	US-10618252-B2
Application number	US-201815951079-A
Country	US
Kind code	B2
Filing date	Apr 11, 2018
Priority date	Apr 12, 2017
Publication date	Apr 14, 2020
Grant date	Apr 14, 2020

Abstract

A laminated glazing having a first ply connected to a second ply by a polymeric interlayer; and a solar control coating located on at least one of the major surfaces thereof, the solar control coating including: a first phase adjustment layer; a first metallic layer located over the first phase adjustment layer; a first primer layer located over the first metallic layer; a second phase adjustment layer located over the first primer layer; a second metallic layer located over the second phase adjustment layer; a second primer layer located over the second metallic layer; a third phase adjustment layer located over the second primer layer; a third metallic layer located over the third phase adjustment layer; a third primer layer located over the third metallic layer; a fourth phase adjustment layer located over the third primer layer; and a protective layer located over the fourth phase adjustment layer.

First claim

What is claimed is:

1. A laminated glazing comprising a first ply connected to a second ply by a polymeric interlayer, wherein the first ply has a first major surface and a second major surface, and the second ply has a third major surface and a fourth major surface; and a solar control coating located on at least one of the major surfaces, the solar control coating comprising:
a first phase adjustment layer; a first metallic layer located over the first phase adjustment layer; a first primer layer located over the first metallic layer; a second phase adjustment layer located over the first primer layer; a second metallic layer located over the second phase adjustment layer; a second primer layer located over the second metallic layer; a third phase adjustment layer located over the second primer layer; a third metallic layer located over the third phase adjustment layer; a third primer layer located over the third metallic layer; a fourth phase adjustment layer located over the third primer layer; and a protective layer located over the fourth phase adjustment layer,
wherein the first phase adjustment layer has an optical thickness in the range of 53 nm to 74 nm;
wherein the second phase adjustment layer has an optical thickness in the range of 118 nm to 136 nm;
wherein the third phase adjustment layer has an optical thickness in the range of 147 nm to 156 nm; and/or
wherein the fourth phase adjustment layer has an optical thickness in the range of 60 nm to 73 nm.

2. The laminated glazing of claim 1
wherein the phase adjustment layers comprise dielectric or semiconductor materials.

3. The laminated glazing of claim 1 wherein the phase adjustment layers comprise non-metallic materials.

4. The laminated glazing of claim 1 :
wherein the first phase adjustment layer has a geometric thickness in the range of 26 nm to 37 nm;
wherein the second phase adjustment layer has a geometric thickness in the range of 59 nm to 68 nm;
wherein the third phase adjustment layer has a geometric thickness in the range of 73.5 nm to 78 nm; and/or
wherein the fourth phase adjustment layer has a geometric thickness in the range of 30 nm to 37 nm.

5. The laminated glazing of claim 1 :
wherein the first primer layer has an optical thickness in the range of 6 nm to 14 nm;
wherein the second primer layer has an optical thickness in the range of 6 nm to 13 nm; and/or
wherein the third primer layer has an optical thickness in the range of 2.5 nm to 10 nm.

6. The laminated glazing of claim 1 :
wherein the first primer layer has a geometric thickness in the range of 2.5 nm to 5.5 nm;
wherein the second primer layer has a geometric thickness in the range of 2.5 nm to 5 nm; and/or
wherein the third primer layer has a geometric thickness in the range of 1 nm to 4 nm.

7. The laminated glazing of claim 1 :
wherein the first metallic layer has a geometric thickness in the range of 8 nm to 15 nm;
wherein the second metallic layer has a geometric thickness in the range of 8.5 nm to 15 nm; and
wherein the third metallic layer has a geometric thickness in the range of 8.5 nm to 16 nm.

8. The laminated glazing of claim 1 :
wherein the protective layer has an optical thickness in the range of 60 nm to 200 nm.

9. The laminated glazing of claim 1 :
wherein at least one of the phase adjustment layers comprises a metal oxide, a doped metal oxide, a non-doped metal oxide, a mixture of metal oxides, or a metal alloy oxide;
wherein at least one of the metallic layers comprises a continuous film of metallic silver; and/or
wherein at least one of the primer layers comprises titania.

10. The laminated glazing of claim 1 :
wherein the first phase adjustment layer comprises a multi-film structure having a first film and a second film located over the first film;
wherein the first film has a geometric thickness in the range of 18 nm to 25 nm;
wherein the second film has a geometric thickness in the range of 8 nm to 13 nm;
wherein the first film comprises an oxide of an alloy of zinc and tin;
wherein the second film comprises zinc oxide or tin doped zinc oxide.

11. The laminated glazing of claim 1 :
wherein the second phase adjustment layer comprises a first film, a second film, and a third film;
wherein the first film or third film have a geometric thickness in the range of 8 nm to 10 nm;
wherein the second film has a geometric thickness in the range of 42 nm to 49 nm;
wherein the first film and the third film comprise zinc oxide or tin doped zinc oxide; and/or
wherein the second film comprises zinc stannate.

12. The laminated glazing of claim 1 :
wherein the third phase adjustment layer comprises a first film, a second film, and a third film;
wherein the first film and/or the third film have a geometric thickness in the range of 10 nm to 14 nm;
wherein the second film has a geometric thickness in the range of 52 nm to 54 nm;
wherein the first film and/or the third film comprises zinc oxide or tin doped zinc oxide; and/or
wherein the second film comprises zinc stannate.

13. The laminated glazing of claim 1 :
wherein the protective layer has a geometric thickness in the range of 30 nm to 100 nm; and/or
wherein the protective layer comprises a mixture of silica and alumina.

14. The laminated glazing of claim 1 :
wherein the first phase adjustment layer comprises a first film comprising zinc stannate and a second film comprising zinc oxide; the first metallic layer comprises a continuous layer of metallic silver; the first primer layer comprises titania deposited as titanium metal; the second phase adjustment layer comprises a first film comprising zinc oxide, a second film comprising zinc stannate, and a third film comprising zinc oxide; the second metallic layer comprises a continuous layer of metallic silver; the second primer layer comprises titania deposited as titanium metal; the third phase adjustment layer comprises a first film comprising zinc oxide, a second film comprising zinc stannate, and a third film comprising zinc oxide; the third metallic layer comprises a continuous layer of metallic silver; the third primer layer comprises titania deposited as titanium metal; the fourth phase adjustment layer comprises a first layer comprising zinc oxide and a second layer comprising zinc stannate; and the protective layer comprises a mixture of silica and alumina.

15. The laminated glazing of claim 1 , wherein the solar control coating is located on the second major surface, wherein the first ply has a higher visible light transmittance than the second ply.

16. The laminated glazing of claim 1 :
wherein the first metallic layer has a geometric thickness in the range of 8 nm to 13 nm;
wherein the second metallic layer has a geometric thickness in the range of 10 nm to 13.5 nm; and
wherein the third metallic layer has a geometric thickness in the range of 10 nm to 15 nm.

17. The laminated glazing of claim 1 :
wherein the first metallic layer has a geometric thickness in the range of 9 nm to 11 nm;
wherein the second metallic layer has a geometric thickness in the range of 10 nm to 13 nm; and
wherein the third metallic layer has a geometric thickness in the range of 12 nm to 14 nm.

18. The laminated glazing of claim 1 :
wherein the fourth phase adjustment layer comprises a first film and a second film;
wherein the first film has a geometric thickness in the range of 10 nm to 13 nm;
wherein the second film has a geometric thickness in the range of 19 nm to 24 nm;
wherein the first film comprises zinc oxide or tin doped zinc oxid

Assignees

• Vitro Flat Glass Llc

Inventors

• Wagner Andrew V
• Buchanan Michael J

Classifications

• G02F2202/10

  semiconductor · CPC title

• C04B2237/704

  of one or more of the ceramic layers or articles · CPC title

• G02F2203/01

  transmissive · CPC title

• B32B2307/418

  Refractive · CPC title

• B32B2313/02

  Boron · CPC title