PROCESS FOR PRODUCING ITO PARTICLES, ITO POWDER, COATING MATERIAL FOR TRANSPARENT ELECTROCONDUCTIVE MATERIAL, AND TRANSPARENT ELECTROCONDUCTIVE FILM

摘要

Disclosed is a process for producing ITO particles that can produce ITO particles without use of a high-boiling solvent as a solvent in the production process by a simple treatment method without through a heating step in an atmosphere which disadvantageously causes sintering among the ITO particles to coarsen the ITO particles.  Also disclosed are an ITO powder suitable for a coating material for a transparent electroconductive material and a process for producing the ITO powder.  The process for producing the ITO powder comprises a first step of dissolving an indium-containing salt and a tin-containing salt in an organic solvent and adding an organic solvent containing a basic precipitant to the organic solvent to prepare a mixture of a precursor containing indium and tin with the organic solvent, and a second step of heating the mixture of the precursor containing indium and tin with the organic solvent at a temperature of 200 to 300°C within a pressurized vessel to produce ITO particles.