Method for determination of realistic UV protection factors or broad spectrum indices
    1.
    发明授权
    Method for determination of realistic UV protection factors or broad spectrum indices 有权
    确定现实紫外线保护因子或广谱指标的方法

    公开(公告)号:US06820014B2

    公开(公告)日:2004-11-16

    申请号:US10323088

    申请日:2002-12-18

    IPC分类号: G01N21/33 G01N21/59

    摘要: The invention relates to a new method for determination of realistic UV protection factors or bread spectrum indices of a sunscreen preparation. Realistic UV protection factors are calculable by determination of the theoretical and the experimental UV absorbances of known UV filters in wavelength steps of about 5 nm in the range of 290-400 nm from a definite basic formulation (emulsion, gel etc.) and on a transparent substrate and introducing of the values in a mathematical model. These factors are in conformity with values measured in vivo. The number of the experiments for developing new formulations are significant reduced because only basic formulation, kind and concentration of the filters have to enter.

    摘要翻译: 本发明涉及一种用于确定防晒制剂的真实紫外线防护因子或面包光谱指数的新方法。 通过确定已知紫外线滤光片的理论和实验紫外线吸收度可以通过确定在约5nm的范围内的波长步骤在290-400nm范围内从确定的碱性配方(乳液,凝胶等)和在 透明衬底和数值模型中的值的引入。 这些因素与体内测量的值一致。 开发新制剂的实验数量显着减少,因为只有基本配方,过滤器的种类和浓度必须进入。

    Stable multiple phase emulsion of the type O.sub.1 /W/O.sub.2
    4.
    发明授权
    Stable multiple phase emulsion of the type O.sub.1 /W/O.sub.2 失效
    O1 / W / O2型稳定型多相乳液

    公开(公告)号:US6106847A

    公开(公告)日:2000-08-22

    申请号:US924241

    申请日:1997-09-05

    IPC分类号: A61K8/06 A61Q17/04 A61K7/48

    摘要: The invention relates to a stable multiple phase emulsion of the O.sub.1 /W/O.sub.2 type with high proportions of the primary O.sub.1 /W emulsion. The new emulsions have an emulsifier-free primary oil-in-water phase consisting of a viscoplastic aqueous gel containing the finely distributed inner oil droplets together with a gelling agent, wherein the thixotropic primary oil-in-water phase has a yield point in the range from 20 to 100 Pa and a plastic viscosity of 0.01 to 0.1 Pa.multidot.s and contains at least one lipophilic agent in the primary oil; and a secondary oil phase in which the primary oil-in-water phase is present together with a lipophilic emulsifier; and wherein the proportion of the inner oily phase is from 10 to 35 % by weight relative to the total weight of the emulsion. The higher proportions of the inner oily phase render possible higher proportions of organic sun protection agents with simultaneous avoidance of skin irritations.

    摘要翻译: 本发明涉及具有高比例的主要O1 / W乳液的O1 / W / O2型稳定的多相乳液。 新的乳液具有不含乳化剂的初级水包油相,其由含有细分散的内部油滴的胶粘剂水凝胶与胶凝剂组成,其中触变性初级水包油相具有屈服点 范围为20〜100Pa,塑性粘度为0.01〜0.1Pax,在原油中含有至少一种亲脂性试剂; 和主要油包水相与亲脂性乳化剂一起存在的次级油相; 并且其中所述内部油相的比例相对于所述乳液的总重量为10至35重量%。 内部油相的比例越高,可以提供更高比例的有机防晒剂,同时避免皮肤刺激。