Nanocapsules based on water-dispersible anionic polymers,...

A - Human Necessities – 61 – K

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A61K 9/51 (2006.01) A61K 8/11 (2006.01) B01J 13/02 (2006.01) B01J 13/04 (2006.01)

Patent

CA 2293728

La présente invention concerne des nanocapsules constituées - d'un coeur lipidique formant ou contenant un principe actif lipophile et - d'une enveloppe polymérique continue insoluble dans l'eau, ladite enveloppe polymérique comprenant au moins un polymère anionique hydrodispersible synthétique choisi parmi les polyesters, poly(ester amides), polyuréthannes et copolymères vinyliques, portant tous des fonctions acide carboxylique et/ou sulfonique, et/ou un polymère anionique hydrodispersible naturel choisi parmi la résine shellac, la gomme de sandaraque et les dammars, un nouveau procédé de préparation de telles nanocapsules et des compositions cosmétiques et/ou dermatologiques les contenant.

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