SUSPENSION OBTAINED FROM A MULTIPLE EMULSION COMPRISING A HYDROPHOBIC COMPOUND SOLID AT ROOM TEMPERATURE AND GRANULES OBTAINED BY DRYING SAID SUSPENSION

摘要

The invention concerns a suspension of particles in an aqueous medium, obtainable by carrying out the following steps: (a) preparing an invert emulsion from an internal aqueous phase comprising at least an active hydrophilic substance, and an internal organic phase comprising at least a hydrophobic compound having a melting point not less than 35 DEG C, at least a non-ionic or cationic surfactant and/or at least a non-ionic or cationic amphiphilic polymer; the temperature for preparing the emulsion being not less than the melting point of the hydrophobic compound; (b) preparing the multiple emulsion by dispersing the invert emulsion in an external aqueous phase comprising at least a non-ionic polyalkoxylated surfactant and/or at least a non-ionic polyalkoxylated amphiphilic polymer and at least an anionic surfactant; the temperature for carrying out the dispersion being not less than the melting point of the hydrophobic compound; (c) bringing said resulting emulsion to a temperature not higher than the melting point of the hydrophobic compound. The invention also concerns granules obtainable by contacting said suspension with at least a drying agent. Finally, the invention further concerns the use of said suspension and said granules.