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    INTEGRATED COPOLYETHER GLYCOL MANUFACTURING PROCESS
    1.
    发明公开
    INTEGRATED COPOLYETHER GLYCOL MANUFACTURING PROCESS 有权
    一体化共聚乙二醇制造工艺

    公开(公告)号：EP2513195A1

    公开(公告)日：2012-10-24

    申请号：EP10838031.2

    申请日：2010-01-12

    Applicant: Invista Technologies S.à.r.l.

    Inventor： OSBORNE, Robert, B. ,  SUN, Qun ,  SUN, Yanhui ,  SISLER, Gregg, M. ,  EISSMANN, Roy, N. ,  ORLANDI, Robert, D.

    IPC: C08G65/20 ,  C08G65/28 ,  C08G65/30

    CPC classification number: C08G65/20 ,  C08G65/2678 ,  C08G65/2684 ,  C08G65/2696 ,  C08G65/30

    Abstract: The present invention relates to an improved, fully-integrated continuous process of enhanced process operability for manufacturing copolyether glycols having enhanced physical properties by polymerization of a reaction mixture comprising tetrahydrofuran and at least one alkylene oxide in the presence of an acid catalyst and at least one compound containing reactive hydrogen atoms. The copolyether glycols manufactured by the present process have enhanced physical properties of increased alkylene oxide incorporation, average molecular weight and polydispersity, as well as reduced crystallinity, color, oligomeric cyclic ether content, and linear oligomer having an average molecular weight of up to about 400 dalton content.

    Abstract translation: 本发明涉及一种改进的完全整合的连续工艺，其通过在酸催化剂存在下聚合包含四氢呋喃和至少一种烯化氧的反应混合物而具有增强的物理性质的共聚醚二醇， 含有活性氢原子的化合物。 通过本发明方法制造的共聚醚二醇具有提高的烯化氧结合物的物理性质，平均分子量和多分散性，以及降低的结晶度，颜色，低聚环醚含量和平均分子量高达约400的直链低聚物 道尔顿含量。

    IMPROVED PRODUCT RECOVERY PROCESS IN THE FILTRATION OF POLYETHER POLYOLS
    3.
    发明公开
    IMPROVED PRODUCT RECOVERY PROCESS IN THE FILTRATION OF POLYETHER POLYOLS 审中-公开
    提高了产品的恢复过程用于过滤聚醚多元醇

    公开(公告)号：EP2734309A2

    公开(公告)日：2014-05-28

    申请号：EP12738362.8

    申请日：2012-07-17

    Applicant: Invista Technologies S.à.r.l.

    Inventor： OSBORNE, Robert, B. ,  QUON, Willard, L.

    IPC: B05D1/02

    CPC classification number: C07C41/34 ,  C07C41/46 ,  C08G65/20 ,  C08G65/30

    Abstract: An improved method for recovering a purified polyether polyol comprising the steps of providing an aqueous solution of a polyether polyol containing an alkali metal catalyst residual formed from a transesterification process, contacting the aqueous solution with a stoichiometric excess of magnesium sulfate to form a second aqueous solution, removing water from said second aqueous solution at a temperature above the melt temperature of said polyether polyol to produce a dehydrated slurry containing a molten polyether polyol phase essentially free of residual alkali metal and a precipitated solid phase comprising sulfate and/or sulfite salts of the alkali metal catalyst, magnesium hydroxide, and excess magnesium sulfate and/or sulfide, passing the dehydrated slurry of through a filtration system comprising a filtration press to separate the molten polyether polyol phase from the precipitated solid phase, wherein the filtration press is treated with a filter aid that is essentially free of transition metal oxide content, separating the molten polyether polyol phase substantially free of water, residual alkali metal catalyst and transition metal contaminants from the precipitated solid phase and recovering polyether polyol from the separated polyether polyol phase.

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