METHOD FOR PRODUCING METAL NANOPARTICLES AND METAL NANOPARTICLES PRODUCED THEREBY

摘要

A method for producing metal nanoparticles for inkjet is provided to produce metal nanoparticles capable of lowering firing temperature of inks with high yield by using an organic material having low decomposition temperature. A method for producing metal nanoparticles for inkjet includes the steps of: (a) preparing metal nanoparticles capped with fatty acid; (b) substituting a part of the fatty acid with a first amine by heating a mixture of the fatty acid-capped metal nanoparticles and the C1-7 linear or branched first amine in an organic solvent; and (c) adding a C8-20 linear or branched second amine to the mixture, and heating the admixture to substitute the first amine with the second amine. Further, the fatty acid is saturated or unsaturated fatty acid having carbon number 3 to 22.