PROCESS FOR THE PREPARATION OF POLYCARBONATES AND DIARYL CARBONATE
    37.
    发明申请
    PROCESS FOR THE PREPARATION OF POLYCARBONATES AND DIARYL CARBONATE 有权
    制备聚碳酸酯和二氧化碳的方法

    公开(公告)号:US20090240021A1

    公开(公告)日:2009-09-24

    申请号:US12370182

    申请日:2009-02-12

    IPC分类号: C08G64/30 B01J19/18

    CPC分类号: C08G64/24 C07C68/02 C07C69/96

    摘要: The present invention relates to a process for the continuous preparation of polycarbonates or diaryl carbonates by the method of the phase boundary process, in which both the mixing of the organic and aqueous phase and the upstream oligomerization step or aryl chloroformate and/or diaryl carbonate preparation step are effected in a special pump.

    摘要翻译: 本发明涉及通过相界方法连续制备聚碳酸酯或二芳基碳酸酯的方法,其中有机相和水相的混合与上游低聚步骤或氯甲酸芳基酯和/或碳酸二芳基酯制备 步骤在特殊的泵中进行。

    Process for producing DMC catalysts
    39.
    发明授权
    Process for producing DMC catalysts 有权
    生产DMC催化剂的方法

    公开(公告)号:US06780813B1

    公开(公告)日:2004-08-24

    申请号:US10148555

    申请日:2002-05-30

    IPC分类号: B01J2726

    摘要: The invention relates to an improved method of producing double-metal cyanide (DMC) catalysts for the production of polyether polyols by polyaddition of alkylene oxides to starter compounds containing active hydrogen atoms, in which the DMC catalyst dispersion is produced using a mixing nozzle, preferably a jet disperser. The DMC catalysts produced in this way have an increased activity in polyether polyol production, reduced particle size and narrower particle size distribution.

    摘要翻译: 本发明涉及一种制备双金属氰化物(DMC)催化剂的改进方法,所述双金属氰化物(DMC)催化剂是通过将环氧烷烃加成到含活性氢原子的起始化合物中制备聚醚多元醇,其中使用混合喷嘴制备DMC催化剂分散体 喷气分散机 以这种方式生产的DMC催化剂在聚醚多元醇生产中具有增加的活性,减小的粒度和较窄的粒度分布。