PROCESS FOR WORKING-UP A REACTION MIXTURE COMPRISING POLYETHER POLYOL
    1.
    发明公开
    PROCESS FOR WORKING-UP A REACTION MIXTURE COMPRISING POLYETHER POLYOL 有权
    方法用于处理与聚醚多元醇的反应混合物

    公开(公告)号:EP2791207A2

    公开(公告)日:2014-10-22

    申请号:EP12799220.4

    申请日:2012-12-13

    Applicant: BASF SE

    CPC classification number: C08G65/30 C08G65/2648

    Abstract: 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).

    REVERSE-PHASE POLYMERISATION PROCESS
    4.
    发明公开
    REVERSE-PHASE POLYMERISATION PROCESS 审中-公开
    反相聚合工艺

    公开(公告)号:EP3027661A1

    公开(公告)日:2016-06-08

    申请号:EP14744840.1

    申请日:2014-07-29

    Applicant: BASF SE

    Abstract: A reverse-phase suspension polymerisation process for the manufacture of polymer beads comprising forming aqueous monomer beads of an aqueous solution comprising water-soluble ethylenically unsaturated monomer or monomer blend and polymerising the monomer or monomer blend to form polymer beads while suspended in a non-aqueous liquid, recovering polymer beads, and then cleaning the non-aqueous liquid in which the process comprises providing the non-aqueous liquid in a vessel (1), forming a suspension of monomer beads from the aqueous monomer or monomer blend in the non-aqueous liquid, initiating polymerisation to form polymerising beads, removing a suspension of the polymer beads in non-aqueous liquid from the vessel and recovering, water soluble or water swellable polymer beads from the suspension, in which the non-aqueous liquid contains impurities which comprise particles, and then transferring the non-aqueous liquid from the suspension to a cleaning stage, in which the cleaning stage provides a cleaned non-aqueous liquid suitable for use in a reverse-phase suspension polymerisation process, which cleaning stage comprises removing particles from the non-aqueous liquid in at least one filtration step. The invention also relates to the apparatus suitable for carrying out a reverse-phase suspension polymerisation and polymer beads obtainable by the process or employing the apparatus. The invention further relates to a cleaned non-aqueous liquid obtainable by the process.

    Abstract translation: 用于制造聚合物珠粒的反相悬浮聚合方法包括形成包含水溶性烯属不饱和单体或单体共混物的水溶液的含水单体珠粒,并将单体或单体共混物聚合以形成聚合物珠粒,同时将其悬浮于非水 液体,回收聚合物珠粒,然后清洗非水液体,其中该方法包括在容器(1)中提供非水液体,由含水单体或单体混合物形成单体珠粒悬浮于非水溶液 液体,引发聚合形成聚合珠粒,从容器中除去聚合物珠粒在非水液体中的悬浮液,并从悬浮液中回收水溶性或水溶胀性聚合物珠粒,其中非水液体含有包含颗粒 ,然后将非水液体从悬浮液转移到清洁阶段,其中清洁阶段 e提供适用于反相悬浮聚合工艺的清洁过的非水液体,该清洁阶段包括在至少一个过滤步骤中从非水液体中除去颗粒。 本发明还涉及适用于进行反相悬浮聚合的设备和可通过该方法或使用该设备获得的聚合物珠粒。 本发明还涉及通过该方法可获得的清洁过的非水液体。

Patent Agency Ranking