| 摘要 |
PROBLEM TO BE SOLVED: To provide a microcapsule which contains a core material having colored particles dispersed in an oil phase and having a uniform particle size without using an emulsifying and dispersing agent . SOLUTION: The microcapsule encapsulating a disperse system is produced by preparing a liquid organic dispersion containing a resin whose acid group is neutralized, a colored particle and an organic solvent, dispersing the liquid organic dispersion in an aqueous medium to produce a capsule particle in the aqueous medium, the capsule particle comprising the disperse system in which the colored particle is dispersed in the organic solvent, and a wall encapsulating the disperse system, and separating the capsule particle from the aqueous medium and drying them. The liquid organic dispersion may comprise, as an organic solvent, a hydrophobic organic solvent and a polar solvent dissolving the resin constituting the wall and being miscible to the aqueous medium. The wall of the capsule particle may be crosslinked or cured with a crosslinking agent. The microcapsule is utilized for an image display device in which the colored particle is electrophoretically movable in the oil phase by a potential differences. COPYRIGHT: (C)2005,JPO&NCIPI |
