Modified polybenzimidazole polymer membranes
    1.
    发明授权
    Modified polybenzimidazole polymer membranes 失效
    改性聚苯并咪唑聚合物膜

    公开(公告)号:US4734466A

    公开(公告)日:1988-03-29

    申请号:US878535

    申请日:1986-06-25

    CPC分类号: C08G73/18

    摘要: The invention provides a substituted polybenzimidazole product produced by employing a cyclic carbonate to attach hydroxyalkyl substituents at the reactive imidazole hydrogen sites on the polybenzimidazole polymer. The substituted polybenzimidazole polymer membranes produced by this process exhibit improved hydrophilicity and chemical stability over prior art polybenzimidazole membranes. Substituted polybenzimidazole polymer ultrafilters produced by this process filter a broad range of molecular weight compounds.

    摘要翻译: 本发明提供了通过使用环状碳酸酯在聚苯并咪唑聚合物上的反应性咪唑氢位置连接羟烷基取代基而制备的取代的聚苯并咪唑产物。 通过该方法制备的取代的聚苯并咪唑聚合物膜相对于现有技术的聚苯并咪唑膜显示出改进的亲水性和化学稳定性。 通过该方法制备的取代的聚苯并咪唑聚合物超滤器过滤宽范围的分子量化合物。

    Process for modifying polybenzimidazole polymers with ethylene carbonates
    2.
    发明授权
    Process for modifying polybenzimidazole polymers with ethylene carbonates 失效
    用乙烯碳酸酯改性聚苯并咪唑聚合物的方法

    公开(公告)号:US4599388A

    公开(公告)日:1986-07-08

    申请号:US691962

    申请日:1985-01-16

    CPC分类号: C08G73/18

    摘要: This invention provides a process for modifying a polybenzimidazole polymer which involves employing ethylene carbonate as a hydroxyethylating agent to introduce 2-hydroxyethyl substituents at active imidazole hydrogen sites in the polymer. The polymer product exhibits improved hydrophilicity.

    摘要翻译: 本发明提供了一种改性聚苯并咪唑聚合物的方法,该方法涉及使用碳酸亚乙酯作为羟乙基化剂以在聚合物中的活性咪唑氢位引入2-羟乙基取代基。 聚合物产品具有改善的亲水性。