Separation of metal nanoparticles

US7575621B2 · kind B2 · utility

Assignee

• Cabot Corporation · US

Inventors

• Karel Vanheusden · Albuquerque, US
• Hyungrak Kiim · Albuquerque, US
• Aaron D. Stump · Albuquerque, US
• Allen B. Schult · Albuquerque, US
• Mark J. Hampden-Smith · Albuquerque, US
• Chuck Edwards · Rio Rancho, US
• Anthony R. James · Rio Rancho, US
• James Caruso · Albuquerque, US
• Toivo T. Kodas · Albuquerque, US
• Scott Haubrich · Albuquerque, US
• Mark H. Kowalski · Westford, US

Key dates

• Filing date: Jan 13, 2006
• Grant date: Aug 18, 2009
• Expiry date: Jan 20, 2027

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S977/896
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A process for the production of metal nanoparticles. Nanoparticles are formed by combining a metal compound with a solution that comprises a polyol and a substance that is capable of being adsorbed on the nanoparticles. The nanoparticles are precipitated by adding a nanoparticle-precipitating liquid in a sufficient amount to precipitate at least a substantial portion of the nanoparticles and of a protic solvent in a sufficient amount to improve the separation of the nanoparticles from the liquid phase.