Fine-particled alkaline-earth titanates and method for the production thereof using titan oxide particles

US7662358B2 · kind B2 · utility

Assignee

• Tronox Pigments GmbH · DE

Inventors

• Gerhard Auer · Krefeld, DE
• Werner Schuy · Tönisvorst, DE
• Anna Röttger · Krefeld, DE
• Dieter Völtzke · Bad Birnbach, DE
• Harald Schwarz · Bad Tölz, DE
• Hans-Peter Abicht · Bodenwerder, DE

Key dates

• Filing date: Sep 14, 2005
• Grant date: Feb 16, 2010
• Expiry date: Sep 14, 2025

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S502/525
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

The invention relates to fine-particled alkaline-earth titanates and to a method for the production thereof by reacting alkaline-earth metal compounds with titanium dioxide particles. The titanium dioxide particles have a BET-surface greater than 50 m2/g. The titanium dioxide particles can have a very low sulphate, chloride and carbon content. The reaction can take place at a temperature below 700° C. The alkaline-earth titanate can have a BET-surface of 5-100 m2/g. Advantageously, it does not contain any hydroxyl groups in the crystal lattice. The alkaline-earth titanate can be used in the production of microelectronic components.