Coated glass

US6048621A · kind A · utility

Assignee

• PILKINGTON PLC · GB

Inventors

• Jose Gallego · Aschaffenburg, DE
• John Robert Siddle · Stockton, GB

Key dates

• Filing date: Sep 10, 1997
• Grant date: Apr 11, 2000
• Expiry date: Sep 10, 2017

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C03C17/3417
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A high performance solar control glass comprises a glass substrate with a coating comprising a heat absorbing layer and a low emissivity layer of a metal oxide. Preferred heat absorbing layers absorb preferentially at wavelengths above 700 nm, and may be, for example, of non-stoichiometric or doped tungsten oxide, or of cobalt oxide, chromium oxide, iron oxide or vanadiam oxide. Preferred low emissivity layers are of semi-conductor metal oxide, for example doped tin oxide or doped indium oxide. Because of the nature of the layers, the coatings may be of neutral color and be suitable for deposition on-line on the glass ribbon, during the glass production process, by pyrolytic methods for example chemical vapor deposition.