| abstract |
A method for producing a sized multilayer emulsion that is simple and has a desired particle size and a narrow particle size distribution, a multilayer emulsion suitable for the method, a method for producing a capsule for drying the obtained multilayer emulsion, and a capsule are provided. . A method for producing a sized multilayer emulsion having an n-layer structure (n is an integer of 3 or more), wherein a first phase forming a first layer and a second layer are formed. The first emulsification step of mixing and emulsifying the second phase to prepare a first phase / second phase type two-layer emulsion, (j-1) layer emulsion, and jth phase forming the jth layer Are mixed and emulsified to prepare a j-layer emulsion (j-1) next emulsification step (where j is an integer of 3 or more and n or less), and the k-layer emulsion is pressurized to form a coil. It was sized by including a sizing step in which the liquid suitable particle size of the (k-1) layer emulsion was adjusted by flowing in the narrow tube (here, k is at least one integer of 3 or more and n or less). A method for producing a multilayer emulsion. [Selection] Figure 1 |