Method for depositing titanium oxide layers using soluble powders

US6387446B1 · kind B1 · utility

Assignee

• Max-Planck-Gesellschaft zur Föderung der Wissenschaften e.V. · US

Inventors

• Peer Löbmann · Würzburg, DE
• Rainer Jahn · Veitshöchheim, DE
• Stephan Merklein · Crailsheim, DE

Key dates

• Filing date: Sep 22, 2000
• Grant date: May 14, 2002
• Expiry date: Sep 22, 2020

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C04B2111/00827
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A sol-gel process for the production of titanium oxide layers which comprises the following stages:(i) preparation of a soluble, titanium-containing powder by:(a) reaction of a titanium alcoholate of the general formula Ti(OR)4, in which the radicals R are identical or different and represent straight-chain, branched or cyclic alkyl or alkenyl radicals having 1 to 10 carbon atoms, which optionally have one or more carbonyl and/or ester and/or carboxyl functions, with one or more polar compounds with completing, chelating properties,(b) heating of the solution,(c) adding of water to the solution, optionally in the presence of a catalyst,(d) concentrating of the solution until a powder is obtained,(ii) dissolving of the powder to form a sol,(iii) coating of a substrate with the sol and(iv) heating of the coated substrate, described.