Lithium silicate glasses or glass ceramics, method for production thereof and use thereof

US10442725B2 · kind B2 · utility

Assignees

• Fraunhofer-Gesellschaft zur förderung der angewandten Forschung e.V. · DE
• Vita Zahnfabrik H. Rauter GmbH & Co. KG · DE
• DeguDent GmbH · DE

Inventors

• Bernhard Durschang · Rottendorf, DE
• Jörn Probst · Bad Wurzach, DE
• Norbert Thiel · Annaberg-Buchholz, DE
• Michael Gödiker · Clingen, DE
• Markus Vollmann · Gelnhausen, DE
• Udo Schusser · Alzenau, DE

Key dates

• Filing date: Sep 4, 2015
• Grant date: Oct 15, 2019
• Expiry date: Sep 4, 2035

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C03C2204/00
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

The invention relates to glass ceramics based on the lithium metasilicate system (Li2O.SiO2(Li2SiO3)), which are mechanically processible in a simple manner in an intermediate stage of the crystallization and, after complete crystallization, represent a high-strength, highly translucent and chemically stable glass ceramic.