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    • 2. 发明授权
    • Ion-exchange membrane
    • 离子交换膜
    • US06830671B2
    • 2004-12-14
    • US10183500
    • 2002-06-28
    • Toshio AritomiMinoru Kawashima
    • Toshio AritomiMinoru Kawashima
    • B01D6144
    • B01D67/0088A23L2/78B01D61/52B01D67/0093B01J47/016B01J47/12C08J5/2275C08J5/2287C08J2327/06C08J2353/02
    • An ion-exchange membrane having excellent resistance against organic fouling by high molecular weight organic ions etc. and showing low electric resistance is provided. Said ion-exchange membrane is characterized by that a polyether compound containing polyalkylene glycol chain, such as polyethylene glycol, polypropylene glycol, their derivatives, etc., is fixed on the surface and/or inside of the membrane. As examples of the mode of the fixation there are mentioned fixation by entanglement of the molecules forming the membrane and the molecules of the polyether compound, physical fixation of both molecules by the anchor effect, and chemical fixation of both molecules by the formation of covalent bond or ionic bond. Said ion-exchange membrane can be preferably used in case of removing low molecular weight electrolytes from an aqueous solution containing low molecular weight electrolytes and high molecular weight organic ions etc. through electrodialysis.
    • 提供了具有优异的抗高分子量有机离子的有机污染等离子交换膜,显示出低电阻的离子交换膜。 所述离子交换膜的特征在于,将含有聚亚烷基二醇链的聚醚化合物如聚乙二醇,聚丙二醇及其衍生物等固定在膜的表面和/或内部。 作为固定方式的实例,提到通过缠结形成膜的分子和聚醚化合物的分子的固定,通过锚定效应对两个分子的物理固定以及通过形成共价键的两个分子的化学固定来进行固定 或离子键。 所述离子交换膜优选用于通过电渗析从含有低分子量电解质和高分子量有机离子等的水溶液中除去低分子量电解质的情况。