Compositions and Methods for Cleaning Membranes
    1.
    发明申请
    Compositions and Methods for Cleaning Membranes 审中-公开
    清洁膜的组成和方法

    公开(公告)号:US20170037339A1

    公开(公告)日:2017-02-09

    申请号:US14819185

    申请日:2015-08-05

    IPC分类号: C11D1/72 C11D3/43

    摘要: A composition is disclosed for cleaning a membrane. The composition includes: (i) a non-ionic surfactant having the formula: R—O(CH2CH2O)nH, wherein R is a branched, substituted or unsubstituted, C11-15 alkyl group, wherein n is an average degree of ethoxylation, and wherein n is in the range of from 3 to 20; and (ii) at least one of an additional non-ionic surfactant, a water soluble solvent, or a hydrotrope. In one version of the composition, an upper limit of a range of molecular weights of the surfactant is 1300 grams or below. In another version of the composition, the composition has a gel point such that it will be in the liquid phase before and after dilution with any amount of water at all temperatures of 40° F. and above. A method of cleaning a membrane using the compositions is also disclosed.

    摘要翻译: 公开了用于清洁膜的组合物。 组合物包括:(i)具有下式的非离子表面活性剂:R-O(CH 2 CH 2 O)n H,其中R是支链,取代或未取代的C 11-15烷基,其中n是平均乙氧基化度, 其中n在3至20的范围内; 和(ii)另外的非离子表面活性剂,水溶性溶剂或水溶助长剂中的至少一种。 在组合物的一种形式中,表面活性剂的分子量范围的上限为1300克以下。 在组合物的另一种形式中,组合物具有凝胶点,使得在40°F及以上的所有温度下用任何量的水稀释之前和之后它将处于液相。 还公开了使用该组合物清洗膜的方法。