| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for stably producing a pigment dispersion with the pigment being in the form of microparticles even if the amount of a dispersant to be used is decreased in the synthetic step in a reprecipitation process, and to provide the pigment dispersion obtained by the method. <P>SOLUTION: The method for producing the pigment dispersion with the pigment dispersed in a dispersion medium includes the following process: a solution (A) prepared by dissolving the pigment in a Bronsted acid and a solution (B) compatible with the solution and poorer in the capacity of dissolving the pigment than the Bronsted acid are mixed together in the presence of a dispersant for the pigment to deposit and give the pigment, wherein the solutions (A) and (B) are mixed together in the presence of the dispersant and a cyclic ester compound. <P>COPYRIGHT: (C)2010,JPO&INPIT |
