POLYMERIZATION PROCESS FOR PREPARING POLYOLEFINS
    11.
    发明申请
    POLYMERIZATION PROCESS FOR PREPARING POLYOLEFINS 审中-公开
    制备聚烯烃的聚合方法

    公开(公告)号:WO2007014842A1

    公开(公告)日:2007-02-08

    申请号:PCT/EP2006/064346

    申请日:2006-07-18

    CPC classification number: C08F10/00 C08F110/08 C08F2/06

    Abstract: A solution process for polymerizing one or more α-olefins of formula CH 2 =CHR, where R is H or an alkyl radical C 1-12 , to produce a polymer that is soluble in the reaction medium, the process comprising: (a) polymerizat ion in a solution phase of one or more α-olefins in the presence of an organo-aluminum compound and a catalyst system comprising a transition metal compound as the catalyst component; (b) the polymeric solution obtained from step a) is then pressurized and transferred by means of a screw pump to a successive step for removing the unreacted monomers from the polymer; wherein the pumping capacity of said screw pump is kept constant by adding the polymeric solution with water at a feeding point upstream the screw pump.

    Abstract translation: 用于聚合一种或多种式CH 2 CH 2的α-烯烃的溶液方法,其中R是H或烷基C 1-12,以产生聚合物, 所述方法包括:(a)在有机铝化合物和包含过渡金属化合物作为催化剂组分的催化剂体系的存在下,在一种或多种α-烯烃的溶液相中聚合; (b)然后通过螺杆泵将从步骤a)获得的聚合物溶液加压并转移到从聚合物中除去未反应单体的连续步骤; 其中所述螺杆泵的泵送能力通过在螺杆泵上游的进料点处加入聚合物溶液而保持恒定。

    MULTISTAGE PROCESS FOR THE POLYMERIZATION OF OLEFINS
    15.
    发明申请
    MULTISTAGE PROCESS FOR THE POLYMERIZATION OF OLEFINS 审中-公开
    烯烃聚合的多种方法

    公开(公告)号:WO2009037080A1

    公开(公告)日:2009-03-26

    申请号:PCT/EP2008/061234

    申请日:2008-08-27

    Abstract: A process for the multistage polymerization of olefins in a sequence of an upstream slurry reactor and a downstream gas-phase reactor, the transfer of polymer from the upstream reactor to the downstream reactor comprising the following steps: a) heating the slurry of polyolefin particles to evaporate the liquid polymerization medium; b) separating the polyolefin particles from the obtained gaseous phase in at least a separation chamber; c) transferring the polyolefin particles to said downstream reactor by means of a couple of lock hoppers working intermittently in parallel, where one of said lock hoppers is continuously filled with the polymer coming from said separation chamber, while simultaneously the other one is continuously pressurized by means of a gas comprising the reaction mixture coming from said downstream reactor.

    Abstract translation: 一种用于上游浆料反应器和下游气相反应器的顺序的烯烃多段聚合的方法,将聚合物从上游反应器转移到下游反应器,包括以下步骤:a)将聚烯烃颗粒的浆料加热至 蒸发液体聚合介质; b)在至少分离室中从所获得的气相中分离聚烯烃颗粒; c)通过一对间歇地并行工作的一对锁定料斗将聚烯烃颗粒转移到所述下游反应器,其中一个所述锁定料斗连续地填充有来自所述分离室的聚合物,同时另一个由 包括来自所述下游反应器的反应混合物的气体的方法。

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