Colorless glasses/borosilicate glasses with special UV-edge

US7163904B2 · kind B2 · utility

Assignee

• Schott AG · DE

Inventors

• Steffen Grün · Wallhausen, DE
• Johann Faderl · Nieder-Hilbersheim, DE
• Simone Monika Ritter · Mainz, DE

Key dates

• Filing date: Sep 30, 2003
• Grant date: Jan 16, 2007
• Expiry date: Jul 6, 2024

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C03C3/089
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A borosilicate glass, having a spectral edge wavelength in a UV range of 280 to 325 nm, which can be set in a simple and defined manner, with the composition in percent by weight on an oxide basis of 60–75% SiO2, 10–15% B2O3, 5–15% Na2O, 5–10% K2O, 0–5% Li2O, 0.1–1 CaO, 0.5–3% BaO, >0–1.7% TiO2, 0–0.5% Sb2O3, and normal refining agents.