Low-emissivity and anti-solar glazing

US9630876B2 · kind B2 · utility

Assignee

• AGC GLASS EUROPE · BE

Inventors

• Stijn Mahieu · Lovendegem, BE
• Anne-Christine BAUDOUIN · Louvain-la-Neuve, BE
• Marc Hauptmann · Kessel-Lo, BE
• Jean-Michel Depauw · Brussels, BE
• Michael Purwins · Offensen, DE
• Eric Mathieu · Sarreguemines, FR
• Hansjoerg Weis · Ennigerloh, DE

Key dates

• Filing date: May 28, 2014
• Grant date: Apr 25, 2017
• Expiry date: May 28, 2034

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C03C17/3681
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

The invention relates to low-emissivity and anti-solar glazing systems that change only very little in properties when they are subjected to a heat treatment. They comprise a stack of thin layers comprising an alternating arrangement of n infrared radiation reflecting functional layers and n+1 dielectric coatings, characterized in that: (i) the first dielectric coating comprises a layer made from an oxide in contact with the substrate, (ii) the portion of the coating stack between two functional layers comprises, in order: a barrier layer, a zinc oxide-based layer, a layer of zinc-tin mixed oxide, a nucleation layer, and (iii) the last dielectric coating comprises a layer made from an oxide other than silicon oxide with a thickness greater than 3 nm overlaid with a layer made from a silicon nitride or a silicon oxide with a thickness greater than 10 nm superposed thereon.