| abstract |
The present invention provides a novel silver ink in which silver nanoparticles are dispersed at a relatively high concentration in an alicyclic / aromatic hydrocarbon liquid medium such as diethylbenzene and decalin. X-ray crystal particle diameter Dx obtained by adsorbing octyl gallate, dodecyl gallate, or castor oil on the surface is 1 to 40 nm, preferably 1 to 15 nm, and the silver concentration is 20 to 60% by mass. A silver ink dispersed in an aromatic hydrocarbon liquid medium and maintained in a dispersed state for at least 168 hours when the liquid is allowed to stand after stirring. Particularly preferred are combinations of diethylbenzene / octyl gallate, diethylbenzene / dodecyl gallate, diethylbenzene / castor oil, decalin / octyl gallate, decalin / dodecyl gallate. [Selection] Figure 8 |