Chemical modification of polyimides
    4.
    发明授权
    Chemical modification of polyimides 失效
    聚酰亚胺的化学改性

    公开(公告)号:US06660062B2

    公开(公告)日:2003-12-09

    申请号:US10141355

    申请日:2002-05-09

    IPC分类号: B01D5322

    摘要: A process is provided for chemically modifying a dual-layer hollow fibre, wherein the fibre comprises a first layer consisting essentially of a polyimide and a second layer consisting essentially of a polymer which is substantially unaffected by the chemical modification process. The process comprises contacting the polyimide layer with a polyamine. In addition, a process is provided for chemically modifying a polyimide membrane in general, using a process which comprises contacting the membrane with an alcoholic solution of an aliphatic-aromatic polyamine.

    摘要翻译: 提供了一种用于化学改性双层中空纤维的方法,其中纤维包括基本上由聚酰亚胺组成的第一层和基本上由基本上不受化学改性方法影响的聚合物组成的第二层。 该方法包括使聚酰亚胺层与多胺接触。 此外,提供了通常使用包括使膜与脂族 - 芳族多胺的醇溶液接触的方法来化学改性聚酰亚胺膜的方法。