Patent ID: 8057823

Claim:
A process for preparing nanocapsules comprising: (a) preparing a mixture in the form of an oil/water emulsion comprising an aqueous phase, an oily fatty phase comprising a fatty substance that is liquid or semiliquid at room temperature, and a lipophilic surfactant that is solid at 20Â° C., (b) bringing about the phase inversion of said oil/water emulsion by at least two or more temperature cycles, wherein each temperature cycle comprises increasing the temperature up to a temperature T 2 above the phase inversion temperature (PIT) of the mixture to obtain a water/oil emulsion, followed by reducing the temperature to a temperature T 1 , T 1 <PIT<T 2 , to yield an oil/water emulsion as a translucent suspension, and (c) quenching the oil/water emulsion at approximately T 1 to obtain stable nanocapsules.