Toyo Jozo Company, Ltd.

Akiho Nagata

Masataka Morishita

Mitsuru Fukushima

Yoshihito Inaba

Sadami Kobari

Jinnosuke Abe

Microcapsules are made by (a.) dispersing or dissolving a core substance in a film-forming polymer solution, (b.) emulsifying in fine droplets the resulting dispersion or solution in a vehicle which is poorly miscible with the solvent of the polymer solution and which doesn't dissolve said polymer to prepare an emulsion, and (c.) adding to the emulsion a non-solvent for the polymer wherein the non-solvent is miscible with the solvent, poorly miscible with the vehicle, and does not dissolve the polymer, whereby the solvent is removed by being absorbed by non-solvent emulsion droplets to precipitate the polymer film around the core substance.

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Shizuoka, Japan

Akiho Nagata