| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide resin particles avoiding problems caused by dropping and aggregation of pigments although the particles are pigmented on the surfaces. <P>SOLUTION: A colored urethane resin particle composition comprises urethane resin particles (U) having rugged particle surfaces and having a shape factor SF2 of 120 to 240, and pigment dispersion resin particles (C) comprising a resin (P) and a pigment (E) dispersed therein, adhering to the surfaces of the urethane resin particles (U). The concentration of (E) in (C) is 20 to 90 wt.%, and a particle diameter ratio of the urethane resin particles (U) to the pigment dispersion resin particles (C) ranges from 100:0.5 to 100:50. The median particle diameter of the urethane resin particles (U) is preferably 20 to 500 μm, and the median particle diameter of the pigment dispersion resin particles (C) is not more than 1/5 as the median particle diameter of the urethane resin particles (U) and in the range from 1 to 100 μm. <P>COPYRIGHT: (C)2012,JPO&INPIT |
