Composite pane having solar protection coating and thermal-radiation-reflecting coating

US12023895B2 · kind B2 · utility

Assignee

• SAINT-GOBAIN GLASS FRANCE · FR

Inventors

• Stefanie PENGEL · Aachen, DE
• Yael BRONSTEIN · Paris, FR
• Norbert Huhn · Herzogenrath, DE
• Xavier Caillet · Champ d'Agonges, FR

Key dates

• Filing date: Mar 3, 2021
• Grant date: Jul 2, 2024
• Expiry date: May 14, 2041

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/2495
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A composite pane includes an outer pane, an inner pane, and a thermoplastic intermediate layer. The composite pane has, between the outer and inner panes, a solar protection coating that substantially reflects or absorbs rays outside the visible spectrum of solar radiation. The solar protection coating includes starting from the outer pane, a layer sequence of first dielectric module (M1), first silver layer (Ag1), second dielectric module (M2), second silver layer (Ag2), third dielectric module (M3), third dielectric module (M3), third silver layer (Ag3), fourth dielectric module (M4), wherein the silver layers (Ag1, Ag2, Ag3) have a layer thickness relative to one another of Ag1/Ag2>1 and Ag1/Ag3>1, and the dielectric modules (M1, M2, M3, M4) have a relative layer thickness of M2/M1>1, M2/M3>1, and M2/M4>1.