Patent ID: 7628840
Filing Date: 2009-12-08
Classification: B01F,B01J,B22F,B82Y,C09D,H01L,H05K,Y10T

Abstract:
1. A method for the preparation of metal nano-particles comprising the steps of dissolving, in a non-polar solvent, one of an organic metal compound of a fatty acid, a metal complex of an amine wherein the amine is an aliphatic amine having a linear or branched structure or a mixture of the organic metal compound and the metal complex, and adding a reducing agent to the resulting liquid in order to reduce the liquid to thus give metal nano-particles, additionally while adding the reducing agent introducing, into the liquid, hydrogen gas, carbon monoxide gas, a hydrogen-containing gas or a carbon monoxide-containing gas, after the adding the reducing agent, adding deionized water to the liquid, followed by stirring the resulting mixture and then allowing the mixture to stand so that impurities present in the liquid are transferred to a polar solvent and that the impurity concentration in the non-polar solvent is reduced.