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Title:
METAL COLLOIDAL SOLUTION AND METHOD FOR PRODUCING SAME
Document Type and Number:
WIPO Patent Application WO/2013/118860
Kind Code:
A1
Abstract:
The present invention is a metal colloidal solution that contains colloidal particles, each of which is composed of a metal particle formed of one or more metals and a protective agent bonded to the metal particle, and a solvent that serves as the dispersion medium for the colloidal particles. The metal colloidal solution is characterized in that the chloride ion concentration per 1% by mass of the metal concentration is 25 ppm or less and the nitrate ion concentration per 1% by mass of the metal concentration is 7,500 ppm or less. The present invention is capable of improving the adsorption capacity of the colloidal particles by adjusting the amount of protective agent for the colloidal particles. It is preferable that the protective agent is bonded to each metal particle in an amount of 0.2-2.5 times the mass of the metal particle.

Inventors:
OHSHIMA YUUSUKE (JP)
KUBO HITOSHI (JP)
ISHIKAWA TOMOKO (JP)
NAKAMURA NORIAKI (JP)
TANIUCHI JUNICHI (JP)
TSUCHIYA YOSHITERU (JP)
TAKAHASHI HIROAKI (JP)
TAKANEZAWA HIDENORI (JP)
INOUE KENICHI (JP)
KATO SYUNSUKE (JP)
SHIRAISHI HIROKAZU (JP)
Application Number:
PCT/JP2013/053029
Publication Date:
August 15, 2013
Filing Date:
February 08, 2013
Export Citation:
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Assignee:
TANAKA PRECIOUS METAL IND (JP)
International Classes:
B22F9/24; B01D61/14; B01J13/00; B22F1/102; B82Y30/00; B82Y40/00
Domestic Patent References:
WO2006082996A12006-08-10
Foreign References:
JP2008214691A2008-09-18
JP2009228067A2009-10-08
JP2011208274A2011-10-20
JPH04121692A1992-04-22
JP2009197324A2009-09-03
JP2000087248A2000-03-28
JP2006055748A2006-03-02
Other References:
See also references of EP 2813303A4
Attorney, Agent or Firm:
TANAKA AND OKAZAKI (JP)
Patent business corporation Tanaka and Okazaki and associates (JP)
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Claims: