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    • 22. 发明公开
    • COMPOSITE SEMIPERMEABLE MEMBRANE AND METHOD FOR PRODUCING SAME
    • 可切换的VERBUNDMEMBRAN UND HERSTELLUNGSVERFAHRENDAFÜR
    • EP2517782A1
    • 2012-10-31
    • EP10839280.4
    • 2010-12-16
    • Toray Industries, Inc.
    • SASAKI, TakaoMITSUHATA, TomokoTAKAGI, KentaroOTO, Katsufumi
    • B01D71/56B01D69/12B01D71/82C08J7/12
    • B01D71/56B01D65/003B01D69/12B01D2323/12B01D2325/30C02F1/44C08J7/047C08J2477/00
    • A composite semipermeable membrane comprising a porous support membrane on which a separating functional polyamide layer resulting from the polycondensation reaction of polyfunctional aromatic amines with polyfunctional acid halides is formed, wherein the separating functional polyamide layer has carboxy groups, amino groups, phenolic hydroxyl groups, and azo groups, wherein X A , the ratio of the amino groups (molar equivalent of the amino groups / (molar equivalent of the azo groups + molar equivalent of the phenolic hydroxyl groups + molar equivalent of the amino groups)) on a feed water contact surface of the separating functional polyamide layer (an A surface), is in the range 0.5 or less, and X B , the ratio of the amino groups (molar equivalent of the amino groups / (molar equivalent of the azo groups + molar equivalent of the phenolic hydroxyl groups + molar equivalent of the amino groups)) on a permeate-side surface of the separating functional polyamide layer (a B surface), i.e., the opposite side to the A surface, is in the range of 0.5 to 1. The present invention provides a composite semipermeable membrane that achieves a balance between high solute removal properties and a high permeate flow rate and has high organic-solvent resistance, and a method for producing same.
    • 一种复合半透膜,包括多孔支撑膜,其上形成由多官能芳族胺与多官能酰卤的缩聚反应产生的分离功能聚酰胺层,其中分离官能聚酰胺层具有羧基,氨基,酚羟基和 偶氮基团,其中XA,原料水接触表面(氨基的摩尔当量/(偶氮基团的摩尔当量+酚羟基的摩尔当量+氨基的摩尔当量))的比例 的分离功能聚酰胺层(A表面)的范围为0.5以下,XB为氨基(氨基的摩尔当量/(偶氮基的摩尔当量+酚的摩尔当量) 羟基+氨基摩尔当量))在分离功能聚酰胺层(B面)的透过侧表面上,i 与A表面相对的一侧,在0.5〜1的范围内。本发明提供一种复合半透膜,其实现高溶质去除性能和高渗透流量之间的平衡,并具有高有机溶剂 电阻及其制造方法。