| 摘要 |
By the present invention, spherical, smooth-surfaced microparticles of a polycarbonate-based polymer (A) can be provided by forming an emulsion in a system in which a polycarbonate-based polymer (A), a polymer (B) different from the polycarbonate-based polymer (A), and an organic solvent (C) are dissolved and mixed and which causes phase separation into two phases of a solution phase having the polycarbonate-based polymer (A) as a main component and a solution phase having the polymer (B) as a main component, and subsequently bringing the emulsion into contact with a poor solvent for the polycarbonate-based polymer (A) at a temperature of 80°C or higher. Provided are polycarbonate-based polymer microparticles, and particularly, spherical polycarbonate-based polymer microparticles having a smooth particle surface, which are suitable in cosmetics, films having a function of diffusing light, and the like. |
