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Title:
METAL NANOPARTICLES, DISPERSION CONTAINING SAME, AND PROCESS FOR PRODUCTION OF SAME
Document Type and Number:
WIPO Patent Application WO/2011/013542
Kind Code:
A1
Abstract:
For the purpose of producing a large quantity of metal nanoparticles capable of being dispersed stably in a solvent without requiring the addition of any aggregation-inhibiting substance such as a surfactant and at low cost, the metal nanoparticles is produced through the steps mentioned below. A powder of a metal compound is suspended in a solvent. Subsequently, the suspension is heated at a predetermined temperature while passing through an atmosphere of an inert gas, a hydrogen gas or other non-oxidative gas. Specifically, for example, a silver oxide miropowder is used as a raw material powder, and a special-grade γ-butyrolactone reagent is used as the solvent. The solvent in a volume of 5 mL is placed in a 10-mL glass vessel, the raw material powder in an amount of about 40 mg is introduced into the glass vessel, and the resulting mixture is heated at about 135˚C for 15 minutes on a hot plate under deaeration conditions in which the bubbling with a nitrogen gas is carried out at a rate of about 20 mL per minute while agitating the mixture by means of a magnetic stirrer.

Inventors:
KAWASAKI MITSUO (JP)
WADA MASASHI (JP)
SUGIMOTO NOBUYUKI (JP)
KAJITA OSAMU (JP)
Application Number:
PCT/JP2010/062200
Publication Date:
February 03, 2011
Filing Date:
July 21, 2010
Export Citation:
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Assignee:
UNIV KYOTO (JP)
FUKUDA METAL FOIL POWDER (JP)
KAWASAKI MITSUO (JP)
WADA MASASHI (JP)
SUGIMOTO NOBUYUKI (JP)
KAJITA OSAMU (JP)
International Classes:
B22F9/00; B22F9/20; B22F9/30; B82Y30/00; B82Y40/00; C09C1/62; C09C3/08; C09D11/00; C09D11/38; H01B1/22; H01B13/00; B22F1/054
Domestic Patent References:
WO2009060803A12009-05-14
WO2008114866A12008-09-25
Foreign References:
JP2007056321A2007-03-08
JP2004307881A2004-11-04
JP2005097677A2005-04-14
JP2008517153A2008-05-22
JP2006299354A2006-11-02
Attorney, Agent or Firm:
MORIWAKI, Masashi et al. (JP)
Masashi Moriwaki (JP)
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