Patent ID: 8039015

Claim:
A method of making microcapsules containing a water-immiscible core material comprising: (a) forming an emulsion comprising droplets of a water-immiscible core material in a first aqueous solution of an amphiphilic first wall-forming reactant that preferentially accumulates at the surface of the droplets; (b) forming a second aqueous solution of a second wall-forming reactant; and (c) combining the emulsion with the second aqueous solution to permit a reaction between the first and second reactants such that the resulting reaction product forms an encapsulating wall surrounding each emulsion droplet to encapsulate a core consisting of the water-immiscible core material; wherein one of said first and second reactants comprises a Lewis base reactant and the other comprises a Lewis acid reactant, and wherein the reaction product consists of a salt of the Lewis base—Lewis acid reactant pair.