Silver powder mixture, method for producing same, and conductive paste

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United States of America Patent

PATENT NO 11413685
APP PUB NO 20210060655A1
SERIAL NO

16644582

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Abstract

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A silver powder mixture that is suitable for forming a conductive film on a surface of a member having stretchability, a method for producing the same, and a conductive paste using the silver powder mixture is provided. A silver powder mixture containing filamentous silver powder including spherical and filamentous parts and flaky silver powder having an average particle diameter of 1 μm or more and 50 μm or less and an aspect ratio, which is defined by a ratio of an average long diameter and an average thickness, of 1.5 or more is obtained by adding one kind or two or more kinds of a salt of copper and aluminum and ethylenediaminetetraacetic acid to a silver nitrate aqueous solution, for 60 seconds or more, and then adding a reducing agent containing one kind or two or more kinds of L-ascorbic acid, erythorbic acid, and salts thereof.

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Patent Owner(s)

Patent OwnerAddress
DOWA ELECTRONICS MATERIALS CO LTD4-14-1 SOTOKANDA CHIYODA-KU TOKYO 1010021 ?1010021

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Moteki, Yoshio Tokyo, JP 5 14
Okano, Taku Tokyo, JP 9 65
Saito, Yu Tokyo, JP 25 172
Sasaki, Genta Tokyo, JP 1 2

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