Title:
CONDUCTIVE PASTE FOR PRINTING, PREPARATION METHOD THEREFOR, AND METHOD FOR PREPARING SILVER NANOPARTICLE DISPERSION
Document Type and Number:
WIPO Patent Application WO/2017/073364
Kind Code:
A1
Abstract:
The purpose of the present invention is to enable a conductive paste, which is suitable for producing conductors exhibiting excellent conduction performance, and which is capable of being baked at a low temperature, to be prepared in various viscosities. This method for preparing a dispersion of silver nanoparticles, which each have a coating layer comprising a coating agent molecule on the surface, and which have an average particle size of 5-20 nm, includes: a step a) in which formic acid is made to act on powdered silver oxide (I) in a hydrocarbon solvent to convert the powdered silver oxide (I) into silver formate (I); and a step b) in which silver cations included in the silver formate (I) in the hydrocarbon solvent are reduced to silver atoms by way of a reduction reaction using an amine compound, in the presence of a C8-11 monocarboxylic acid, to form silver nanoparticles which have the surfaces thereof coated with the amine compound and the monocarboxylic acid, and which have an average particle size of 5-20 nm. C9-11 primary and secondary amines are used as the amine compound. A method for preparing a conductive paste for printing is also provided which uses said dispersion.
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Inventors:
UEDA MASAYUKI (JP)
Application Number:
PCT/JP2016/080516
Publication Date:
May 04, 2017
Filing Date:
October 14, 2016
Export Citation:
Assignee:
HARIMA CHEMICALS INC (JP)
International Classes:
B22F9/24
Foreign References:
| JP2012185944A | 2012-09-27 |
Attorney, Agent or Firm:
MIYAZAKI, Teruo et al. (JP)
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