IMPROVED ALKANOLYSIS PROCESS
    1.
    发明申请
    IMPROVED ALKANOLYSIS PROCESS 审中-公开
    改进的碱解法

    公开(公告)号:WO2013112785A1

    公开(公告)日:2013-08-01

    申请号:PCT/US2013/023055

    申请日:2013-01-25

    CPC classification number: C08G65/00 C08G65/20 C08G65/30 C08G65/32 Y02P20/127

    Abstract: The present invention provides an improved process for converting a diester of polyether polyol, e.g., PTMEA, to the corresponding dihydroxy product, e.g., polytetramethylene ether glycol (PTMEG) continuously in a reaction zone, such as, for example, a reactive distillation system, for achieving virtually complete conversion of PTMEA to PTMEG, and recovery of PTMEG free of unreacted or unconverted PTMEA and alkanol ester by-product.

    Abstract translation: 本发明提供了一种改进的方法,其将聚醚多元醇例如PTMEA的二酯在反应区(例如反应蒸馏系统)中连续转化成相应的二羟基产物,例如聚四亚甲基醚二醇(PTMEG) 用于实现PTMEA到PTMEG的几乎完全转化,以及没有未反应或未转化的PTMEA和链烷醇酯副产物的PTMEG的回收。

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