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    • 1. 发明公开
    • Improved process for preparing modified poly-(2,6-dimethyl-p-oxyphenylene)
    • Verbutyles Verfahren zur Herstellung von Poly(2,6-二甲基 - 对 - 氧苯基)。
    • EP0432827A1
    • 1991-06-19
    • EP90203149.1
    • 1990-11-29
    • SNAM S.p.A.ENIRICERCHE S.p.A.AGIP PETROLI S.p.A.
    • Pedretti, UgoGandini, AlbertoRoggero, ArnaldoSisto, RafaelloValentini, ClaudioAssogna, AmaliaStopponi, Alessandro
    • C08G65/48B01D71/52
    • C08G65/485
    • A process for preparing a modified, amorphous poly-(2,6-dimetyl-p-oxyphenylene) (PPO) comprises:

      * metallating PPO by a metallating agent, and
      * functionalizing such a metallated PPO by the reaction with a trialkylsilyl halide and/or ethylene oxide;
      and is characterized in that the reaction of metallation is carried out in an inert liquid vehicle which contains PPO in an at least partially suspended solid form, by operating under metallating conditions and gradually adding said metallating agent to such a suspension, either continuously or as discrete portions.
      Dependently on the functionalizing agents used, and on the sequence of addition thereof, the process makes it possible PPO polymers to be obtained, which are modified with trialkyl-silyl, hydroxyethylene and/or ethyleneoxy-trialkyl-silyl functional groups. They are particularly suitable for preparing flat membranes, including asymmetrical membranes, for the separation of gas mixtures.
    • 制备改性的无定形聚(2,6-二甲基 - 对 - 氧亚苯基)(PPO)的方法包括:通过金属化剂对PPO进行金属化,并通过与三烷基甲硅烷基卤化物和/或乙烯的反应使这种金属化的PPO官能化 氧化物; 并且其特征在于金属化的反应在包含至少部分悬浮固体形式的PPO的惰性液体载体中进行,通过在金属化条件下操作并逐渐地将所述金属化剂连续地或者以离散的方式加入到这种悬浮液中 部分。 依赖于所使用的官能化剂,并且根据其加入顺序,该方法使得可以获得PPO聚合物,其被三烷基 - 甲硅烷基,羟基亚乙基和/或亚乙基氧基 - 三烷基 - 甲硅烷基官能团改性。 它们特别适用于制备用于分离气体混合物的平膜,包括不对称膜。