| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve problems of restriction of a production scale, dispersion of quality every lot, mixing-in of foreign material because of open type, contamination, etc. of operation environment by occurrence of powder dust cited as subjects in conventional batch type kneaders, etc. <P>SOLUTION: The method for producing a pigment comprises kneading a mixture of an organic pigment with a water-soluble inorganic salt in an amount of ≥7 pts.wt. and ≤30 pts.wt. based on 1 pt.wt. organic pigment and a water-soluble organic liquid in an amount of ≥0.3 pt.wt. and ≤7 pts.wt. based on 1 pt.wt. organic pigment by a continuous kneading machine having crushing spaces formed at the gaps between circular stationary disks and rotary disks coaxial to the stationary disks and integrally rotating around the axis of a driving shaft. <P>COPYRIGHT: (C)2007,JPO&INPIT |
