US 11,885,174 B2
Solar control coatings with quadruple metallic layers
Patrick Fisher, Pittsburgh, PA (US); Paul A. Medwick, Wexford, PA (US); Adam D. Polcyn, Pittsburgh, PA (US); and Andrew Wagner, Pittsburgh, PA (US)
Assigned to Vitro Flat Glass LLC, Cheswick, PA (US)
Filed by Vitro Flat Glass LLC, Cheswick, PA (US)
Filed on Aug. 2, 2021, as Appl. No. 17/391,334.
Application 17/391,334 is a continuation of application No. 16/265,878, filed on Feb. 1, 2019, granted, now 11,078,718.
Claims priority of provisional application 62/626,332, filed on Feb. 5, 2018.
Prior Publication US 2021/0355746 A1, Nov. 18, 2021
Int. Cl. B32B 15/04 (2006.01); B32B 17/06 (2006.01); E06B 3/67 (2006.01); C03C 17/36 (2006.01); G02B 5/00 (2006.01); G02B 5/20 (2006.01)
CPC E06B 3/6715 (2013.01) [C03C 17/36 (2013.01); C03C 17/366 (2013.01); C03C 17/3639 (2013.01); C03C 17/3642 (2013.01); C03C 17/3644 (2013.01); C03C 17/3649 (2013.01); C03C 17/3652 (2013.01); C03C 17/3681 (2013.01); C03C 17/3689 (2013.01); G02B 5/003 (2013.01); G02B 5/208 (2013.01); C03C 2217/212 (2013.01); C03C 2217/216 (2013.01); C03C 2217/256 (2013.01); C03C 2217/258 (2013.01); C03C 2218/156 (2013.01); C03C 2218/322 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A coated article comprising:
a substrate;
a first dielectric layer comprising zinc and having a thickness in the range of 353 Å to 446 Å over at least a portion of the substrate;
a first metallic layer comprising silver and having a thickness in the range of 75 Å to 200 Å over at least a portion of the first dielectric layer;
a first primer layer having a thickness in the range of 25 Å to 36 Å over at least a portion of the first metallic layer;
a second dielectric layer comprising zinc and having a thickness in the range of 350 Å to 775 Å over at least a portion of the first primer layer;
a second metallic layer over at least a portion of the second dielectric layer;
a second primer layer having a thickness in the range of 20 Å to 36 Å over at least a portion of the second metallic layer;
a third dielectric layer comprising zinc and having a thickness in the range of 260 Å to 425 Å over at least a portion of the second primer layer;
a third metallic layer comprising silver and having a thickness in the range of 70 Å to 250 Å over at least a portion of the third dielectric layer;
a third primer layer having a thickness in the range of 25 Å to 36 Å over at least a portion of the third metallic layer;
a fourth dielectric layer comprising zinc and having a thickness in the range of 350 Å to 785 Å over at least a portion of the third primer layer;
a fourth metallic layer comprising silver and having a thickness in the range of 80 Å to 240 Å over at least a portion of the fourth dielectric layer;
a fourth primer layer having a thickness in the range of 25 Å to 36 Å over at least a portion of the fourth metallic layer;
a fifth dielectric layer comprising zinc and having a thickness in the range of 125 Å to 340 Å over at least a portion of the fourth primer layer; and
an overcoat comprising titanium and having a thickness in the range of 25 Å to 75 Å over at least a portion of the fifth dielectric layer,
wherein the second metallic layer is a discontinuous layer comprising silver and having a thickness in the range of 12 Å to 22 Å,
wherein the first metallic layer, the third metallic layer, and the fourth metallic layer are continuous metallic layers,
wherein the total thickness of all of the continuous metallic layers is in the range of 225 Å to 650 Å,
wherein the article comprises a solar heat gain coefficient (“SHGC”) of less than 0.20, and
wherein the article comprises a visible light transmittance (“LTA”) of between 34% and 45%.