PRODUCTION OF MEMBRANES
    9.
    发明申请
    PRODUCTION OF MEMBRANES 审中-公开
    膜的生产

    公开(公告)号:WO1995015809A1

    公开(公告)日:1995-06-15

    申请号:PCT/GB1994002710

    申请日:1994-12-12

    Abstract: A porous membrane is produced by gelation in a non-solvent medium of an aromatic ether ketone polymer dissolved in a strong acid which is substantially non-sulphonating to the polymer. The polyether ketone solution includes a polymer additive which is not substantially degraded by the strong acid and which is soluble both in the strong acid, the non-solvent and mixtures thereof. The gelation medium may, for example, be aqueous and the polymer additive may be polyvinylpyrrolidone. Membranes produced by the method of the invention have good overall performance and flux at any given molecular weight cut-off.

    Abstract translation: 多孔膜是通过溶解在强酸中的芳族醚酮聚合物的非溶剂介质中凝胶化而形成的,所述强酸基本上不与聚合物磺化。 聚醚酮溶液包括聚合物添加剂,其不被强酸基本上降解,并且在强酸,非溶剂及其混合物中均可溶解。 凝胶介质可以是例如水性的,聚合物添加剂可以是聚乙烯吡咯烷酮。 通过本发明的方法生产的膜在任何给定的分子量截止物下具有良好的总体性能和通量。

    POLYMER AND POROUS STRUCTURE
    10.
    发明申请
    POLYMER AND POROUS STRUCTURE 审中-公开
    聚合物和多孔结构

    公开(公告)号:WO1994018262A1

    公开(公告)日:1994-08-18

    申请号:PCT/GB1994000197

    申请日:1994-02-02

    Abstract: A polymer characterised by the presence of ylid linkages in the main polymer chain of formula (A) where the dashed line represents the remainder of a ring system for which the N provides a heteroatom, and E is a strongly electron withdrawing group. Preferred polymers in accordance with the invention are characterised by the presence of linkages in the polymer main chain of formula (I). The polymers of the invention may be fabricated as membranes for use in various separation processes, e.g. ultrafiltration, nanofiltration, and reverse osmosis.

    Abstract translation: 特征在于在式(A)的主要聚合物链中存在内联连接的聚合物,其中虚线表示N +提供杂原子的环系统的其余部分,E是强吸电子基团。 根据本发明的优选的聚合物的特征在于在式(I)的聚合物主链中存在键。 本发明的聚合物可以制造为用于各种分离方法的膜,例如 超滤,纳滤和反渗透。

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