External preparation

阅读:735发布:2021-03-18

专利汇可以提供External preparation专利检索,专利查询,专利分析的服务。并且PURPOSE:To obtain an external preparation for skin most suitable for cosmetics, containing an ellagic acid-based compound having excellent beautifying effect and improved stability with time free from irritation and sensitization. CONSTITUTION:An external preparation for the skin containing an ellagic acid- based compound shown by formula I [R1-R4 are H, 1-20C alkyl, 1-20C alkoxy, polyalkylene (2-3C) oxide residue or saccharide shown by formula II; R5 is H, OH or 1-8C alkoxy] (especially preferably an alkali metallic salt of an ellagic acid-based compound obtained by dissolving an acid shown by formula I in an aqueous solution of an alkali metal having pH 12-14, reducing to pH 5-8 to give precipitate and collecting the precipitate, e.g., ellagic acid), having excellent beautifying effect, face caring and body caring effects. The external preparation has excellent appearance of product and shelf stability free from bad dispersion.,下面是External preparation专利的具体信息内容。

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