SILVER MICROPOWDER EXCELLENT IN AFFINITY FOR POLAR MEDIUM, AND SILVER INK

摘要

PROBLEM TO BE SOLVED: To provide silver nanoparticles excellent in affinity (that is, dispersibility) for an organic medium having both of hydrophilicity and lipophilicity at a high level.;SOLUTION: A silver micropowder excellent in affinity at least for texanol and terpineol is provided. The silver micropowder comprises silver particles, which are prepared by desorbing amines that the silver particles have on the surfaces of themselves and then adsorbing one or more of salicylic acid, castor oil, cholic acid, and ricinoleic acid onto the surfaces, and which have a X-ray crystal particle diameter Dx of 1-40 nm and have a CV value of ≤40% that is expressed by the following (a). (a) is defined as follows: when, concerning the particle diameters of the silver particles measured by TEM observation, the standard deviation of the particle diameters is represented by σ_D and the average particle diameter is represented by D_TEM, the value of (σ_D/D_TEM×100) is represented by CV value (%).;COPYRIGHT: (C)2013,JPO&INPIT