| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for preparing conveniently and stably micro- capsules with a narrow particle size distribution and a uniform particle diameter and its apparatus. SOLUTION: In this method, a dispersing machine wherein a rotor 9 and stators 10 and 11 form step difference parts extending outward in the radial direction and being concentric and stair-like so as to face each other and mutually facing sides of the step difference parts have radially open recessed teeth parts 13 (13a-13c) and 14 (14a-14c) and on the upstream side of each of at least one or more shearing gaps Cr (Cr1-Cr3) constituted of gaps between teeth of the rotor and teeth of the stator, mixing rooms Mx (Mx1-Mx3) wherein nozzles N (Nz1-Nz3) communicating with raw material feeding holes Rf (Rf1-Rf4) are opened are arranged, is used to disperse a hydrophobic liq. into a hydrophilic liq. and successively, after the dispersed liq. dispersed by using the dispersing machine is furthermore emulsified by using an emulsifying machine, wall films for capsules enveloping the hydrophobic liq. are formed. |
