Method for preparing suspensions and powders based in indium tin oxide and the use thereof

US6533966B1 · kind B1 · utility

Assignee

• INSTITUT FUR NEUE MATERIALIEN gem. GmbH. · DE

Inventors

• Ralph Nonninger · Saarburg, DE
• Christian Goebbert · Eschau, DE
• Helmut Schmidt · Riegelsberg, DE
• Robert Drumm · Riegelsberg, DE
• Stefan Sepeur · Wadgassen, DE

Key dates

• Filing date: Feb 26, 2001
• Grant date: Mar 18, 2003
• Expiry date: Feb 26, 2021

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/256
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

Suspensions and powders based on indium tin oxide are prepared by a method in which indium tin oxide precursors are precipitated from solutions in one or more solvents in the presence of one or more surface-modifying components, the solvent(s) are removed from the precipitate, which is then calcined, one or more surface-modifying components and one or more solvents are added, the mixture is comminuted or dispersed to form a suspension, and the liquid components are separated from the suspension to give a powder. The powder may be converted into a moulding by a shaping process. The materials prepared by this method are especially suitable as coating materials for use in microelectronics and optoelectronics.