Method of fractionating oxidic nanoparticles by crossflow membrane filtration

US8764992B2 · kind B2 · utility

Assignee

• EVONIK DEGUSSA GMBH · DE

Inventors

• Roland Wursche · Schneverdingen, DE
• Goetz Baumgarten · Neubiberg, DE
• Wolfgang Lortz · Wächtersbach, DE
• Michael Kroell · Gelnhausen, DE

Key dates

• Filing date: Apr 1, 2010
• Grant date: Jul 1, 2014
• Expiry date: Feb 22, 2031

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/2982
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A method of fractionating a dispersion of oxidic nanoparticles wherein at least one step of the method is a membrane crossflow filtration step, the flow of the dispersion over the membrane being brought about by means of driven rotating parts; and dispersions of oxidic nanoparticles that are obtainable by the method.