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    HYDROPHILIC, ASYMMETRIC, CHEMICALLY-RESISTANT POLYARAMIDE MEMBRANE
    3.
    发明专利
    HYDROPHILIC, ASYMMETRIC, CHEMICALLY-RESISTANT POLYARAMIDE MEMBRANE 未知

    公开(公告)号：CA2081261A1

    公开(公告)日：1993-04-27

    申请号：CA2081261

    申请日：1992-10-23

    Applicant: HOECHST AG

    Inventor： WAGENER REINHARD ,  SCHNEIDER JUERGEN ,  DELIUS ULRICH ,  HEROLD FRIEDRICH ,  MIESS GEORG-EMERICH ,  MEYER-BLUMENROTH ULRICH

    IPC: B01D67/00 ,  B01D71/56 ,  C08G69/26 ,  C08G69/32 ,  C08G69/40 ,  C08G69/42 ,  B01D69/10 ,  B01D69/06 ,  B01D71/52 ,  B01D71/60

    Abstract: HOE 91/F 337 of the disclosure Hydrophilic, asymmetric, chemically-resistant polyaramide membrane Macroporous, asymmetric, hydrophilic membrane, which contains a copolyamide which has the following recurring structural units: (A) -OC-Ar1-CO-and also three different structural units of those mentioned below: (B) -NH-Ar2-NH- (C) -NH-Ar3-NH- (D, E, F) -NH-Ar2-Z-Ar3-NH-where the symbols Ar1, Ar2, Ar3 and Z have the following meaning: -Ar1- is a 1,4-phenylene or another bivalent C6-C12-aromatic or heteroaromatic radical, possibly containing sulfonic acid groups or ether bridges, in which radical the bonds are in para or comparable coaxial or antiparallel position and which radical is unsubstituted or substituted by one or two branched or unbranched C1-C4 alkyl or C1-C4 alkoxy radicals or by one or more halogen atoms, for example chlorine, fluorine or bromine; -Ar2- and -Ar3-are identical or different 1,2-phenylene, 1,3-phenylene or 1,4-phenylene radicals, which are unsubstituted or substituted by one or two branched or unbranched C1-C4 alkyl or C1-C4 alkoxy radicals; -Z- is one of the following bivalent radicals -O-, -CH2-, -C(CH3)2-, -C(CF3)2-, -SO2-, -NHCO- or -O-Ar2-O-, where -Ar2- has the meaning given above. The concentration of the diamine component (B) is in the range from 0 to 50 molar %, that of the diamine component (C) is in the range from 0 to 60 molar %, and that of the diamines (D), (E) and/or (F) is in the range from 10 to 70 molar %, based on 100 molar % of acid component (A) used, the ratio of the diamine components to the acid component being 0.90:1.10 to 1.10:0.90.

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