| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a colored resin particle with little sedimentation in a non-polarity dispersion medium with the excellent dispersibility, with little dropout of a colored pigment from a porous resin particle, enabling electrophoresis by itself by voltage application without the need of using a dispersant such as a charge controlling agent for the non-polarity dispersion medium, its manufacturing method and its silicone oil dispersion. <P>SOLUTION: The cross-linked (meth)acrylate porous colored resin particle having a negative chargeability is made from a polymer derived from a polymerizable monomer composition including an alkyl (meth)acrylate monomer and a cross-linking agent, a compound having an electron attracting group for providing a negative chargeability and a compound having an electron donating group, and a colored pigment. It has a 2-90 m<SP POS="POST">2</SP>/g specific surface area and a 0.01-0.7 cm<SP POS="POST">3</SP>/g pore volume. <P>COPYRIGHT: (C)2013,JPO&INPIT |
