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The Study of Plate Powder Coated Nano Sized ZnO Synthesis and Effect of Sensory Texture Improvement  

Jin-Hwa , Lee (R&D Center, Hanbul Cosmetics Co.,)
Ju-Yeol, Han (R&D Center, Hanbul Cosmetics Co.,)
Sang-Gil, Lee (R&D Center, Hanbul Cosmetics Co.,)
Hyeong-Bae, Pyo (R&D Center, Hanbul Cosmetics Co.,)
Dong-Kyu, Lee (Department of Industrial Chemical Engineering, Chungbuk National University)
Publication Information
Journal of the Society of Cosmetic Scientists of Korea / v.30, no.2, 2004 , pp. 173-180 More about this Journal
Abstract
Nano sized ZnO particle as 20-30nm applies for material, pigments, rubber additives, gas sensors, varistors, fluorescent substance as well as new material such as photo-catalyst, sensitizer, fluorescent material. ZnO with a particle size in the range 20-30nm has provided to be an excellent UV blocking material in the cosmetics industry, which can be used in sunscreen product to enhance the sun protection factor and natural makeup effect. But pure ZnO particles application limits for getting worse wearing feeling. We make high-functional inorganic-composite that coated with nano-ZnO on the plate-type particle such as sericite, boron nitride and bismuthoxychloride. In this experiment, we synthesized composite powder using hydrothermal precipitation method. The starting material was ZnCl$_2$ Precipitation materials were used hexamethylenetetramine(HMT) and urea. We make an experiment with changing as synthesis factors that are concentrations of starting material, precipitation materials, nuclear formation material, reaction time, and reaction temperature. We analyzed composite powder's shape, crystallization and UV-blocking ability with FE-SEM, XRD, FT-IR, TGA-DTA, In vitro SPF test. The user test was conducted by product's formulator. In the results of this study, nanometer sized ZnD was coated regardless of the type of plate-powder at fixed condition range. When the coated plate-powders were applied in pressed powder product, the glaze of powder itself decreased, but natural make-up effect, spreadability, and adhesionability were increased.
Keywords
zinc oxide; UV blocking; cosmetics; hexamethylenetetramine; coating;
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