| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for producing aggregates by which pigment nanoparticles in an aqueous dispersion of the organic pigment nanoparticles can be easily filtrated without requiring a process such as flashing typically for once forming an aqueous paste, that is, a complicated process requiring an enormous time such as filtering in phase transition of the aqueous dispersion of the organic pigment nanoparticles to a nonaqueous dispersion of the organic pigment nanoparticles. <P>SOLUTION: In the method for producing hydrophobic aggregates of organic pigment nanoparticles, when an organic polymer compound with mass-average molecular weight of 1,000 or more is made coexist in a mixture liquid containing hydrophilic aggregates of the organic pigment nanoparticles in an aqueous medium, the hydrophilic aggregates are turned into hydrophobic aggregates, and the hydrophobic aggregates are separated. <P>COPYRIGHT: (C)2010,JPO&INPIT |
