COMPOSITION DE GÉLULE CONTENANT DES NANOPARTICULES INORGANIQUES POUR LA PROTECTION CONTRE LES UV UTILISANT DES POLYMÈRES FORMANT UN HYDROGEL, ET PROCÉDÉ DE PRÉPARATION ASSOCIÉ
The present invention relates to a capsule composition containing inorganic nanoparticles for UV protection and to a method for preparing same, which can prevent inorganic nanoparticles from permeating into the skin, since the inorganic nanoparticles for UV protection are encapsulated in a hydrophilic polymer capsule using a water-soluble dispersant, and thus a thin hydrogel polymer film can be applied onto the skin to thereby hold the inorganic nanoparticles contained in the capsule. The main features of the present invention pertain to a method for preparing hydrogel-forming capsules containing inorganic nanoparticles for cosmetics, which is characterized in that it comprises: a first step of uniformly mixing inorganic nanoparticles for UV protection and a water-soluble dispersant in water to thereby prepare a dispersion in which the inorganic nanoparticles for UV protection are coated with the dispersant； a second step of directly adding hydrophilic hydrogel-forming polymers into the dispersion, or adding a solution of hydrophilic polymers dissolved in distilled water to the dispersion obtained in the first step and then dissolving and mixing same； and a third step of spray-drying the resultant mixture so as to form capsule particles in which the inorganic nanoparticles for UV protection, having been coated with the dispersant, are covered with a film consisting of hydrogel-forming polymers.La présente invention concerne une composition de gélule contenant des nanoparticules inorganiques pour la protection contre les UV et un procédé de préparation associé, qui peut empêcher les nanoparticules de pénétrer à travers la peau, étant donné que les nanoparticules inorganiques pour la protection contre les UV sont encapsulées dans une gélule de polymère hydrophile en utilisant un dispersant soluble dans l'eau, et donc un fin film polymère d'hydrogel peut être appliqué sur la peau pour ainsi retenir les nanoparticules inorganiques contenues dans la gélule. Les principal
