US 12,240,205 B2
Composite pane comprising a sun shading coating
Stefanie Pengel, Aachen (DE); Klaus Fischer, Alsdorf (DE); and Alexandra Toumar, Paris (FR)
Assigned to SAINT-GOBAIN GLASS FRANCE, Courbevoie (FR)
Appl. No. 18/044,175
Filed by SAINT-GOBAIN GLASS FRANCE, Courbevoie (FR)
PCT Filed Nov. 23, 2021, PCT No. PCT/EP2021/082646
§ 371(c)(1), (2) Date Mar. 6, 2023,
PCT Pub. No. WO2022/112231, PCT Pub. Date Jun. 2, 2022.
Claims priority of application No. 20210317 (EP), filed on Nov. 27, 2020.
Prior Publication US 2023/0321955 A1, Oct. 12, 2023
Int. Cl. B32B 17/10 (2006.01)
CPC B32B 17/10229 (2013.01) [B32B 17/10036 (2013.01); B32B 17/10201 (2013.01); B32B 2255/205 (2013.01); B32B 2255/28 (2013.01); B32B 2307/202 (2013.01); B32B 2307/204 (2013.01); B32B 2307/306 (2013.01); B32B 2307/418 (2013.01); B32B 2307/7376 (2023.05); B32B 2311/08 (2013.01); B32B 2605/00 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A composite pane, comprising an outer pane having an exterior-side surface and an interior-side surface, an inner pane having an exterior-side surface and an interior-side surface, and a thermoplastic intermediate layer, which joins the interior-side surface of the outer pane to the exterior-side surface of the inner pane, wherein the composite pane has at least one sun shading coating between the outer pane and the inner pane, wherein the sun shading coating comprises, starting from the outer pane toward the inner pane, a layer sequence
first dielectric module,
first silver layer,
second dielectric module,
second silver layer,
third dielectric module,
third silver layer,
fourth dielectric module,
wherein the first, second and third silver layers have, relative to one another, a geometrical layer thickness of 0.4<Ag1/Ag3<1.7; and Ag3 or Ag2 is the thickest silver layer, where Ag1 is the geometrical layer thickness of the first silver layer, Ag2 is the geometrical layer thickness of the second silver layer, and Ag3 is the geometrical layer thickness of the third silver layer; and wherein the first, second, third and fourth dielectric modules have, relative to one another, an optical layer thickness of M2/M1>1.9, M2/M3>0.8, and M2/M4 >1.6, where M1 is the optical layer thickness of the first dielectric module, M2 is the optical layer thickness of the second dielectric module, M3 is the optical layer thickness of the third dielectric module and M4 is the optical layer thickness of the fourth dielectric module and wherein all dielectric layers of the first, second, third and fourth dielectric modules have a refractive index greater than 1.8,
wherein each of the second and third dielectric modules comprises at least one first dielectric layer based on silicon nitride or mixed silicon-metal nitride and at least one second dielectric layer based on metal oxide.