Solar control coatings with discontinuous metal layer

• US 9,932,267 B2
• Filed: 03/28/2011
• Issued: 04/03/2018
• Est. Priority Date: 03/29/2010
• Status: Active Grant

• Current Assignee: Vitro Flat Glass LLC (Compagnie De Saint-Gobain)
• Original Assignee: Vitro, S.A.B. De C.V. (Compagnie De Saint-Gobain)
• Inventors: Polcyn, Adam D., Wagner, Andrew V., Buhay, Harry, Bhandari, Abhinav, Finley, James J., Ohodnicki, Jr., Paul R., O'Shaughnessy, Dennis J., Benigni, Jeffrey A., Medwick, Paul A., Thiel, James P.
• Primary Examiner(s): COLGAN, LAUREN ROBINSON
• Application Number:
  US13/072,866
• Publication Number:
  US 20110236715A1
• Time in Patent Office: 2,563 Days
• Field of Search: 428432, 428688, 428689, 428699, 428701, 428702, 428434
• CPC Class Codes: C03C 17/36 at least one coating being a metal
• CPC Class Codes: C03C 17/3618 Coatings of type glass/inorganic compound/other inorganic layers, at least one layer being metallic
• CPC Class Codes: C03C 17/3639 Multilayers containing at least two functional metal layers
• CPC Class Codes: C03C 17/366 Low-emissivity or solar control coatings
• CPC Class Codes: C03C 2217/42 consisting of particles only
• CPC Class Codes: Y10T 428/12542 More than one such component
• CPC Class Codes: Y10T 428/12549 Adjacent to each other
• CPC Class Codes: Y10T 428/24851 Intermediate layer is discontinuous or differential
• CPC Class Codes: Y10T 428/24917 including metal layer

Abstract

An architectural transparency includes a substrate, a first dielectric layer formed over at least a portion of the substrate, a continuous metallic layer formed over at least a portion of the first dielectric layer, a second dielectric layer formed over at least a portion of the first metallic layer, and a subcritical metallic layer formed over at least a portion of the second dielectric layer such that the subcritical metallic layer forms discontinuous metallic regions.

Claims

1. A coated article, comprising:

a substrate; and

a coating over at least a portion of the substrate, the coating comprising;

a first dielectric layer formed over at least a portion of the substrate and comprising a zinc oxide layer over a zinc stannate layer;

a first, continuous metallic silver layer comprising silver over the first dielectric layer;

a first primer layer over the first continuous metallic silver layer, the first primer comprising titanium;

a second dielectric layer over the first primer layer comprising a zinc stannate layer over a zinc oxide layer;

a second, discontinuous metallic silver layer over the second dielectric layer;

a second primer over the second discontinuous metallic silver layer and comprising a nickel-chromium alloy;

a third dielectric layer over the second primer layer and comprising a zinc oxide layer, a zinc stannate layer, and another zinc oxide layer;

a third continuous metallic silver layer over the third dielectric layer;

a third primer layer comprising titanium over the third continuous metallic silver layer;

a fourth dielectric layer comprising a zinc stannate layer over a zinc oxide layer over the third primer layer; and

a protective coating comprising titania over the fourth dielectric coating.

2. The article of claim 1, wherein the second, discontinuous silver layer has an effective thickness of less than 50 Å

.

3. The article according to claim 1, wherein the first dielectric layer further comprises a second zinc oxide layer over the zinc stannate layer.

4. The article according to claim 1, wherein the effective thickness of the second, discontinuous silver layer is in the range of 25 to 30 Å

.

5. The article of claim 1 wherein the second primer has a thickness in the range of 5 Å

to 50 Å

.

6. The article of claim 1 wherein the second, discontinuous silver layer has a thickness of less than 50 Å

.

7. The article of claim 1, wherein the second, discontinuous silver layer has a thickness in the range of 25 Å

to 50 Å

.

8. The article according to claim 1, wherein the second dielectric layer further comprises a second zinc oxide layer over the zinc stannate layer.