Title:
SILVER FINE PARTICLES, PRODUCTION PROCESS THEREFOR, AND CONDUCTIVE PASTE, CONDUCTIVE MEMBRANE AND ELECTRONIC DEVICE, CONTAINING SAID SILVER FINE PARTICLES
Document Type and Number:
WIPO Patent Application WO/2013/099818
Kind Code:
A1
Abstract:
The present invention pertains to: silver fine particles with excellent low-temperature sinterability; a production process therefor; and a conductive paste, a conductive membrane and an electronic device, containing the silver fine particles. In a process for producing silver fine particles which comprises preparing an alcoholic solution (A) of a silver nitrate-amine complex prepared using silver nitrate and at least one water-soluble C2-4 aliphatic amine, preparing, separately from the solution (A), an aqueous solution (B) in which either ascorbic acid or erythorbic acid and a halide are dissolved, adding a mixture of the solution (A) with the solution (B) into a vessel in which water has been put, stirring the resulting mixture, and then subjecting the thus obtained silver fine particles to washing and drying, at least 1.6×10-3 mol of a halide per mol of silver nitrate is added to the solution (B), whereby an aggregate silver fine particle slurry can be obtained to facilitate the subsequent washing. Thus, silver fine particles which have a carbon content of 0.25wt% or less and thus exhibit excellent low-temperature sinterability can be obtained.
Inventors:
IWASAKI KEISUKE (JP)
KAKIHARA YASUO (JP)
HANDA TETSUJI (JP)
OHSUGI MINEKO (JP)
YAMAMOTO YOSUKE (JP)
ISHITANI SEIJI (JP)
MORII HIROKO (JP)
HAYASHI KAZUYUKI (JP)
KAKIHARA YASUO (JP)
HANDA TETSUJI (JP)
OHSUGI MINEKO (JP)
YAMAMOTO YOSUKE (JP)
ISHITANI SEIJI (JP)
MORII HIROKO (JP)
HAYASHI KAZUYUKI (JP)
Application Number:
PCT/JP2012/083336
Publication Date:
July 04, 2013
Filing Date:
December 21, 2012
Export Citation:
Assignee:
TODA KOGYO CORP (JP)
International Classes:
B22F9/24; B22F1/054; B22F1/102; B22F9/00; B82Y30/00; B82Y40/00; H01B1/00; H01B1/22; H01B5/14
Domestic Patent References:
| WO2004096470A1 | 2004-11-11 |
Foreign References:
| JP2011080094A | 2011-04-21 | |||
| JP2008274423A | 2008-11-13 | |||
| JP2009030084A | 2009-02-12 | |||
| JP2009215573A | 2009-09-24 |
Attorney, Agent or Firm:
OKADA, KAZUHIKO (JP)
Kazuhiko Okada (JP)
Kazuhiko Okada (JP)
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Claims: