Method for producing isocyanates
    5.
    发明授权
    Method for producing isocyanates 有权
    异氰酸酯的制备方法

    公开(公告)号:US07112694B2

    公开(公告)日:2006-09-26

    申请号:US10513340

    申请日:2003-05-19

    IPC分类号: C07C263/00 B01J10/00

    CPC分类号: C07C263/10 C07C265/14

    摘要: The present invention relates to a continuous process for preparing isocyanates by reacting primary amines with phosgene, wherein the reaction is carried out in a cascade of at least two tube reactors and the gas phase formed in the reaction is separated off in a phase separator after each reactor and only the liquid phase is passed to the next reactor or to product purification and the reaction volume of the first tube reactor is only a fraction of the total reaction volume.

    摘要翻译: 本发明涉及通过使伯胺与光气反应制备异氰酸酯的连续方法,其中反应在至少两个管式反应器的级联中进行,并且在每个反应器中在相分离器中分离反应中形成的气相 反应器,并且只有液相被传送到下一个反应器或产物纯化,并且第一管式反应器的反应体积仅为总反应体积的一部分。

    Method for producing isocyanates
    6.
    发明申请
    Method for producing isocyanates 有权
    异氰酸酯的制备方法

    公开(公告)号:US20050222453A1

    公开(公告)日:2005-10-06

    申请号:US10513340

    申请日:2003-05-19

    IPC分类号: C07C263/10 C07C265/14

    CPC分类号: C07C263/10 C07C265/14

    摘要: The present invention relates to a continuous process for preparing isocyanates by reacting primary amines with phosgene, wherein the reaction is carried out in a cascade of at least two tube reactors and the gas phase formed in the reaction is separated off in a phase separator after each reactor and only the liquid phase is passed to the next reactor or to product purification and the reaction volume of the first tube reactor is only a fraction of the total reaction volume.

    摘要翻译: 本发明涉及通过使伯胺与光气反应制备异氰酸酯的连续方法,其中反应在至少两个管式反应器的级联中进行,并且在每个反应器中在相分离器中分离反应中形成的气相 反应器,并且只有液相被传送到下一个反应器或产物纯化,并且第一管式反应器的反应体积仅为总反应体积的一部分。

    Process for working-up a reaction mixture comprising polyether polyol
    7.
    发明授权
    Process for working-up a reaction mixture comprising polyether polyol 有权
    处理包含聚醚多元醇的反应混合物的方法

    公开(公告)号:US09132387B2

    公开(公告)日:2015-09-15

    申请号:US13712536

    申请日:2012-12-12

    摘要: The invention relates to a process for working-up a reaction mixture (5) comprising polyetherol and dissolved alkali metal comprising catalyst, wherein at least alkali metal ions of the dissolved alkali metal comprising catalyst are partially or completely removed from the mixture by a membrane separation process, the process comprising following steps: (a) feeding the reaction mixture (5) comprising polyetherol and dissolved alkali metal comprising catalyst into a first chamber (1) of a separation unit (3), (b) feeding a solvent into a second chamber (7) of the separation unit (3), the first chamber (1) and the second chamber (7) being separated by a membrane (9), (c) transporting at least the alkali metal ions of the alkali metal comprising catalyst from the first chamber (1) into the second chamber by passing through the membrane (9).

    摘要翻译: 本发明涉及一种用于处理包含聚醚醚和包含催化剂的溶解的碱金属的反应混合物(5)的方法,其中至少包含催化剂的溶解的碱金属的碱金属离子通过膜分离部分或完全从混合物中除去 方法包括以下步骤:(a)将包含聚乙烯醇和包含催化剂的溶解的碱金属的反应混合物(5)进料到分离单元(3)的第一室(1)中,(b)将溶剂进料到第二 分离单元(3)的室(7),第一室(1)和第二室(7)被隔膜(9)隔开,(c)至少输送包含催化剂的碱金属的碱金属离子 从第一腔室(1)通过膜(9)进入第二腔室。