Production of metal nanoparticles

US7824466B2 · kind B2 · utility

Assignee

• Cabot Corporation · US

Inventors

• Karel Vanheusden · Albuquerque, US
• Klaus Kunze · Albuquerque, US
• Hyungrak Kim · Saratoga, 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
• Nathan E. Stott · Cambridge, US

Key dates

• Filing date: May 30, 2007
• Grant date: Nov 2, 2010
• Expiry date: Dec 6, 2028

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S977/896
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Processes for the production of metal nanoparticles. In one aspect, the invention is to a process comprising the steps of mixing a heated first solution comprising a base and/or a reducing agent (e.g., a non-polyol reducing agent), a polyol, and a polymer of vinyl pyrrolidone with a second solution comprising a metal precursor that is capable of being reduced to a metal by the polyol. In another aspect, the invention is to a process that includes the steps of heating a powder of a polymer of vinyl pyrrolidone; forming a first solution comprising the powder and a polyol; and mixing the first solution with a second solution comprising a metal precursor capable of being reduced to a metal by the polyol.