Solarization stable borosilicate glass and uses thereof

US7217673B2 · kind B2 · utility

Assignee

• Schott AG · DE

Inventors

• Karin Naumann · Ober-Olm, DE
• Simone Monika Ritter · Mainz, DE
• Franz Ott · Mitterteich, DE
• Herbert Stappen · Harxheim, DE

Key dates

• Filing date: Feb 20, 2002
• Grant date: May 15, 2007
• Expiry date: Feb 24, 2023

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C03C3/091
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

The borosilicate glass of the invention is highly resistant to solarization, because it is free of CeO2. Also it contains 0.01 to 0.05 wt. % of Fe2O3 and 0.05 to 0.8 wt. % of TiO2. This borosilicate glass is especially advantageous for production of flash tubes, gas discharge lamps, and fluorescent tubes for brake lights and display backlights.