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METHOD FOR PRODUCTION OF SILVER FINE POWDER COVERED WITH ORGANIC SUBSTANCE, AND SILVER FINE POWDER
METHOD FOR PRODUCTION OF SILVER FINE POWDER COVERED WITH ORGANIC SUBSTANCE, AND SILVER FINE POWDER
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机译：覆盖有有机质的银精粉的生产方法以及银精粉
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摘要
Provided is a method for producing a silver fine powder covered with an organic substance, which comprises a step of mixing (i) a dispersion of silver particles covered with a protective material X 1 that comprises an organic compound having an unsaturated bond and having a molecular weight of from 150 to 1000 in a liquid organic medium A, (ii) a protective material X 2 that comprises an organic compound of which the number of the carbon atoms constituting the carbon skeleton is smaller than that of the organic compound to constitute the protective material X 1 , and (iii) a liquid organic medium B of which the ability to dissolve the protective material X 1 therein is higher than that of the liquid organic medium A, thereby promoting the dissolution of the protective material X 1 in the liquid organic medium B and the adhesion of the protective material X 2 to the surface of the silver particles. Accordingly, the invention provides an industrial, large-scale mass-production system for a silver fine powder covered with a protective material having a low molecular weight, of which the sintering temperature can be greatly lowered.
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