Glasses having improved ion exchangeability and thermal expansion

US12162802B2 · kind B2 · utility

Assignee

• Schott AG · DE

Inventors

• Ulrich Fotheringham · Wiesbaden, DE
• Michael Schwall · Mainz, DE
• Ulrich Peuchert · Bodenheim, DE
• Miriam Kunze · Saulheim, DE
• Martun Hovhannisyan · Mainz, DE
• Holger Wegener · Alfeld, DE

Key dates

• Filing date: Feb 8, 2018
• Grant date: Dec 10, 2024
• Expiry date: Feb 8, 2038

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C03C2203/50
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

The present invention relates to glasses having a composition made up of base glasses. The glasses have a good chemical toughenability in combination with an advantageous coefficient of thermal expansion. Owing to their composition and the production process, the homogeneity of the properties of the glasses at their surface is high compared to the bulk glass. Furthermore, the fragility of the glasses is low, so that they can be processed to produce very thin glass articles.