| abstract |
The present invention relates to a method for preparing solid microcapsules comprising the following steps: a) preparing a composition C1, comprising at least one water-soluble or hydrophilic substance dispersed in a hydrophobic phase, b) adding, under agitation, said composition C1 to a polymeric composition C2, the compositions C1 and C2 being mutually immiscible, whereby an emulsion (E1) is obtained; c) adding, under agitation, the emulsion (E1) to a composition C3, the compositions C2 and C3 being mutually immiscible, whereby a double emulsion (E2) is obtained; d) applying shear to the emulsion (E2), whereby a double emulsion (E3) is obtained; and e) polymerising the composition C2, whereby solid microcapsules dispersed in the composition C3 are obtained. |