Alkali-free aluminoborosilicate glass, its use and process for its preparation

US6465381B1 · kind B1 · utility

Assignee

• Schott Glas · DE

Inventors

• Gerhard Lautenschlager · Reinheim, DE
• Klaus Schneider · Zell am Harmersbach, DE
• Thomas Kloss · Jena, DE
• Andreas Sprenger · Mainz, DE

Key dates

• Filing date: Jul 24, 2000
• Grant date: Oct 15, 2002
• Expiry date: Sep 21, 2020

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C03C3/093
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

The invention relates to an alkali-free aluminoboro-silicate glass which has the following composition (in % by weight, based on oxide): SiO2 >60-65; B2O3 6.5-9.5; Al2O3 14-21; MgO 1-8; CaO 1-6; SrO 1-9; BaO 0.1-3.5; with MgO+CaO+SrO+BaO 8-16; ZrO2 0.1-1.5; SnO2 0.1-1; TiO2 0.1-1; CeO2 0.01-1. The glass is particularly suitable for use as a substrate glass in display technology.