| 摘要 |
Disclosed are a method for manufacturing spherical composite particles, by which desired functions are simply and efficiently imparted to the surface or inside of the spherical composite particles; and spherical composite particles obtained by the method. The method for manufacturing spherical composite particles includes the step of melting and kneading a meltable organic solid (A), a component (B) immiscible with the organic solid (A), and one or more fillers (C) having specific differences in solubility parameter SP from the organic solid (A) to give spherical composite particles composed of organic solid (A) and the filler(s) (C) and dispersed in the component (B), in which: a) a filler (C) having a difference in SP of less than 5 is used to give spherical composite particles including the filler (C); or, b) a filler (C) having a difference in SP of 5 or more is used to give spherical composite particles externally bearing the filler (C); or, c) a first filler (C) having a difference in SP of less than 5 and a second filler (C) having a difference in SP of 5 or more are used to give spherical composite particles including the first filler (C) and externally bearing the second filler (C).
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