CAPSULE COMPOSITION CONTAINING INORGANIC NANOPARTICLES FOR UV PROTECTION USING OF HYDROGEL-FORMING POLYMERS, AND METHOD FOR PREPARING SAME

摘要

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.