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    • 6. 发明申请
    • High efficiency sunscreen composition particularly useful for wipes and sprays
    • 高效防晒组合物特别适用于擦拭和喷雾
    • US20070178057A1
    • 2007-08-02
    • US11345064
    • 2006-02-01
    • Ashoke SenGuptaKevin CuretonIlona LinThomas Beihoffer
    • Ashoke SenGuptaKevin CuretonIlona LinThomas Beihoffer
    • A61K8/00A61K8/18A61Q17/04
    • A61Q17/04A61K8/0208A61K8/26A61K8/29A61K8/35A61K8/37A61K8/72A61K8/8147A61K2800/412
    • A sunscreen composition, either impregnating a wipe substrate or comprising a sunscreen spray, wherein the composition comprises an oil phase dispersed stably as emulsion droplets in a water phase that contains i) a booster for the sun protection factor (SPF), comprising a combination of water-dispersible particulate materials, one of which is smectite clay, and a water-soluble or water-dispersible phenolic polymer; and ii) a water-soluble or water-dispersible polymer having a weak acid group, a weight average molecular weight of 1,000-100,000 Dalton, and an anionic charge density of no less than 4 milliequivalent per gram of the polymer; the said sunscreen composition meeting the following specifications: i) the in-vivo sun protection factor (SPF) is ≧1.8 times the weight percent of the sunscreen active(s) contained therein, based on the weight of the sunscreen composition; and ii) the shear thinning index of the composition is greater by 5% or higher with the weak acid polymer contained therein than without the polymer, the shear thinning index being defined as the ratio of viscosities of the sunscreen composition at 0.5 rpm and 20 rpm, measured on a Brookfield RVT viscometer at 25 ° C., using spindle 7, after cooling the composition to room temperature and storing it at that temperature for about 24 hours.
    • 一种防晒组合物,其浸渍擦拭基材或包含防晒剂喷雾,其中所述组合物包含在水相中稳定分散为乳液液滴的油相,其含有i)用于防晒因子(SPF)的增效剂,其包含 水分散性颗粒材料,其中一种是绿土粘土,以及水溶性或水分散性酚醛聚合物; 和ii)具有弱酸基,重均分子量为1,000-100,000道尔顿的水溶性或水分散性聚合物和每克聚合物不小于4毫当量的阴离子电荷密度; 所述防晒组合物满足以下规格:i)基于防晒组合物的重量,体内防晒因子(SPF)为其中所含的防晒活性物的重量百分比的1.8倍; 和ii)组合物的剪切稀化指数与其中包含的弱酸性聚合物相比不含聚合物大5%或更高,剪切稀化指数定义为防晒组合物在0.5rpm和20rpm下的粘度比 ,在布鲁克菲尔德RVT粘度计在25℃下测量,使用纺锤7,将组合物冷却至室温并将其在该温度下储存约24小时。