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    Adhesive system for use in preparing membrane elements for extraction solvent recovery processes
    3.
    发明授权
    Adhesive system for use in preparing membrane elements for extraction solvent recovery processes 失效
    用于制备提取溶剂回收过程的膜元件的粘合剂系统

    公开(公告)号：US4582726A

    公开(公告)日：1986-04-15

    申请号：US561477

    申请日：1983-12-14

    申请人： Harry F. Shuey ,  William M. King

    发明人： Harry F. Shuey ,  William M. King

    IPC分类号： C09J5/00 ,  B01D63/00 ,  B01D63/02 ,  B01D63/10 ,  C09J5/02 ,  C09J183/00 ,  C09J183/04 ,  C09J187/00 ,  C09J3/14

    CPC分类号： B01D63/10 ,  B01D65/003 ,  C09J5/02 ,  B01D2313/04 ,  C09J2400/166

    摘要： In fabricating membrane elements, and especially spiral wound membrane elements, for the separation of extraction solvents, especially N-methyl-2-pyrrolidone (NMP) from extracted oil fractions (e.g., extract of raffinate), adhesive systems consisting of specific silicone elastomers in combination with specific primers have been identified which are useful in forming the bonds necessary to produce an element, as for example, in forming the edge-seal bonds of the membrane that is used to effect the separation, in bonding the membrane leaves to the metal or plastic components of the element, and in forming a protective outer-wrap for the element.

    摘要翻译： 在制造膜元件，特别是螺旋缠绕膜元件时，用于从提取的油馏分（例如萃余液提取物）中分离萃取溶剂，特别是N-甲基-2-吡咯烷酮（NMP），由特定硅氧烷弹性体组成的粘合剂体系 已经鉴定了与特定引物的组合，其可用于形成生产元件所必需的键，例如在形成用于进行分离的膜的边缘密封接合时，将膜叶结合到金属 或元件的塑料部件，以及形成元件的保护性外包装。

    Asymmetric polyimide reverse osmosis membrane, method for preparation of same and use thereof for organic liquid separations
    6.
    发明授权
    Asymmetric polyimide reverse osmosis membrane, method for preparation of same and use thereof for organic liquid separations 失效
    不对称聚酰亚胺反渗透膜，其制备方法及其在有机液体分离中的应用

    公开(公告)号：US4532041A

    公开(公告)日：1985-07-30

    申请号：US564302

    申请日：1983-12-22

    申请人： Harry F. Shuey ,  Wankei Wan

    发明人： Harry F. Shuey ,  Wankei Wan

    IPC分类号： B01D71/64 ,  B01D13/04

    CPC分类号： B01D71/64 ,  B01D61/025 ,  B01D61/10 ,  B01D63/10 ,  B01D67/0011

    摘要： Asymmetric polyimide reverse osmosis membranes of high flux and selectivity for organic liquid separations are described. These membranes are prepared from undegraded polyimide by dissolving from 14-30 wt. % of the undegraded polymer in a dual solvent system comprising a polymer pro-solvent/anti-solvent wherein the pro-solvent is DMF and the anti-solvent is dioxane, wherein the ratio of anti-solvent/pro-solvent ranges from about 10:1 or more-1:1, preferably about 8:1-1.5:1, most preferably about 7:1-3:1; the polymer-solvent mixture is spread into a thin film of the desired thickness and permitted to evaporate for a time just sufficient to permit formation of an asymmetric dense active layer, i.e., within the range 2-120 seconds, preferably 2-60 seconds, most preferably 2-20 seconds before being immersed in a gelation bath.The membranes may be fabricated in the form of sheets, tubes, hollow fibers, etc.Mixtures of organic liquids, and especially mixtures of dewaxing solvents such as ketones, aromatic hydrocarbons and mixtures thereof, halogenated hydrocarbons such as dichloromethane, dichloroethane and mixtures of such halogenated hydrocarbons with ketones or aromatic hydrocarbons or other polar dewaxing solvents and dewaxed oils, are separated after completion of dewaxing operations, using the asymmetric polyimide reverse osmosis membrane described above.

    摘要翻译： 描述了对有机液体分离具有高通量和选择性的不对称聚酰亚胺反渗透膜。 这些膜由未降解的聚酰亚胺由14-30wt。 包含聚合物前溶剂/反溶剂的双溶剂系统中未降解的聚合物的％，其中前溶剂为DMF，反溶剂为二恶烷，其中反溶剂/前溶剂的比例为约10 ：1或更多-1：1，优选约8：1-1.5：1，最优选约7：1-3：1; 将聚合物 - 溶剂混合物扩散到所需厚度的薄膜中并允许蒸发一段时间，足以允许形成不对称的致密有源层，即在2-120秒，优选2-60秒的范围内， 最优选2-20秒，然后浸入凝胶浴中。 膜可以以片，管，中空纤维等的形式制造。有机液体的混合物，特别是脱蜡溶剂如酮，芳族烃及其混合物的混合物，卤代烃如二氯甲烷，二氯乙烷及其混合物 使用上述的不对称聚酰亚胺反渗透膜，在脱蜡操作完成后，分离出具有酮或芳族烃的卤代烃或其它极性脱蜡溶剂和脱蜡油。