发明申请
- 专利标题: Stable sunscreen compositions containing zinc oxide
- 专利标题(中): 含有氧化锌的稳定防晒组合物
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申请号: US11150053申请日: 2005-06-10
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公开(公告)号: US20060280702A1公开(公告)日: 2006-12-14
- 发明人: Ashoke SenGupta , Ilona Lin
- 申请人: Ashoke SenGupta , Ilona Lin
- 申请人地址: US IL Arlington Heights
- 专利权人: AMCOL International Corporation
- 当前专利权人: AMCOL International Corporation
- 当前专利权人地址: US IL Arlington Heights
- 主分类号: A61K8/27
- IPC分类号: A61K8/27
摘要:
A stable, oil-in-water (O-W) emulsion-based sunscreen composition having at least one water-insoluble, organic UV-absorber having a water-solubility of much less than 0.1% by weight, contained in the oil phase of the sunscreen emulsion, comprising i) zinc oxide (ZnO) particles having a surface free of any prior coating of any inorganic oxide and hydrophobic material, remaining dispersed in the water phase of the sunscreen emulsion; ii) at least one non- or low-foaming, non-cationic, hydrophilic polymer, capable of dispersing or deflocculating the ZnO particles but incapable of thickening an aqueous composition to a viscosity of greater than 100 cps at 25° C., wherein the viscosity is measured using a Brookfield viscometer operated at 10 rpm for 15 seconds, when the polymer is added at an amount of 1%, based on the total weight of the polymer and water in the aqueous composition; iii) at least one phenolic polymer, capable of functioning as a dispersing or deflocculating agent for particulate material(s), and adsorbing at an oil-water interface; and v) a buffering agent for the water phase of the sunscreen emulsion.
公开/授权文献
- US08309063B2 Stable sunscreen compositions containing zinc oxide 公开/授权日:2012-11-13