PARTICLES HAVING AN ORGANISED INTERNAL STRUCTURE WHICH ARE DISPERSED IN AN AQUEOUS PHASE, THE PREPARATION THEREOF AND USE OF SAME

摘要

The invention relates to particles comprising: at least one ionically-charged water-soluble polymer; at least one surfactant having an ionic charge opposite to that of said polymer; and at least one water-soluble block copolymer having at least one non-ionic hydrophilic block and at least one non-ionic hydrophobic or ionic block. Optionally, the particles contain at least one active material and the internal structure of said particles forms a mesophase. In addition, said particles are in suspension in an aqueous phase. The invention also relates to a method of obtaining such particles consisting in: preparing a first aqueous mixture comprising the water-soluble, ionically-charged polymer and, if necessary, the water-soluble block copolymer if said copolymer has the same charge; subsequently, a second mixture is added to the above mixture, said second mixture comprising the surfactant and, if necessary, the water-soluble block copolymer if said copolymer has the same charge as the surfactant or if it is not ionically charged. Moreover, the invention relates to formulations comprising said particles and to the use of said particles in cosmetic formulations, for the treatment of textiles and metal and in the phytosanitary field. Furthermore, the invention relates to the use of water-soluble block copolymers as an agent for stabilising particles with a mesophase-forming internal structure, the internal structure of the resulting particles forming the same mesophase.