A new sunscreen agent, methoxycinnamidopropyl polysilsesquioxane (MCP-PSQ), w hich contains an ultraviolet (UV)-absorbing pmethoxycinnamoyl group, has been developed and evaluated. MCPPSQ has composed by polymeric particles, number average size of 600-700 nm, with an organic/inorganic hybrid composition. We investigated the physical characteristics and analyzed organic part of MCP-PSQ in qualitatively and quantitatively. MCP-PSQ is an UVB blocking agent by absorbing of UVB ray, but unlike of other UVB sunscreen agent, UVA/UVB ratio is high with a 0.3 to 0.4, and critical wavelength of 350-360 nm also seems to have characteristics that MCP-PSQ has inorganic properties in addition to regular organic UV-absorbing parts. MCP-PSQ has a raising or boosting effect on the sun protection factor (SPF) of other sunscreen agents.We evaluated photostabilities of MCP-PSQ that has the same functional group as a typical organic sunscreen agent, ethylhexyl methoxycinnamate (EHMC). Using the relation of UV absorbance and fluorescence, we studied photostabilizers to enhance the photostability of MCP-PSQ that has the similar photochemical properties to EHMC. We confirmed that octocrylene, ethylhexyl methoxycrylene, and bis-ethylhexyloxyphenol methoxyphenyl triazine were good photostabilizers for MCP-PSQ.
저자
Kyung-Sup YOON [ R&D Center, Saimdang Cosmetics Co., Ltd. ]
한국생물공학회 [The Korean Society for Biotechnology and Bioengineering]
설립연도
1984
분야
공학>생물공학
소개
이 법인은 생물 공학의 발전과 보급에 이바지하고, 회원 상호 간의 연구 협력과 친목을 도모함을 목적으로 한다
1. 생물공학 분야의 발전을 위한 연구 협력
2. 생물공학의 실용화를 촉진시키기 위한 산학 협동
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