Patent ID: 7906567

Claim:
A method for producing an encapsulated product in which a core substance having an electric charge on its surface is coated with a wall material comprising a polymer as a main component, the production method comprising at least the following steps (1) to (4): (1) a step of adding an ionic polymerizable surfactant A containing an ionic group having the opposite electric charge to the electric charge on the surface of said core substance, a hydrophobic group and a polymerizable group to an aqueous solvent containing said core substance, followed by mixing, thereby adsorbing said ionic polymerizable surfactant A to the surface of said core substance; (2) a step of adding, after said step (1), an ionic polymerizable surfactant B containing an ionic group having the same or opposite electric charge to the electric charge on the surface of said core substance, a hydrophobic group and a polymerizable group, followed by mixing; (3) a step of adding, after said step (2), a hydrophobic monomer and an oil-soluble polymerization initiator, followed by mixing; and (4) a step of polymerizing said ionic polymerizable surfactant A, said ionic polymerizable surfactant B and said hydrophobic monomer to form the polymer.