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    PROCESS FOR THE GAS-PHASE POLYMERIZATION OF OLEFINS
    5.
    发明公开
    PROCESS FOR THE GAS-PHASE POLYMERIZATION OF OLEFINS 有权
    烯烃气相聚合的方法

    公开(公告)号：EP2281010A1

    公开(公告)日：2011-02-09

    申请号：EP09753799.7

    申请日：2009-05-15

    申请人： Basell Poliolefine Italia S.r.l.

    发明人： RINALDI, Riccardo ,  MAZZUCCO, Antonio ,  BALESTRA, Enrico ,  PENZO, Giuseppe ,  DORINI, Maurizio ,  MEI, Gabriele

    IPC分类号： C08F10/00 ,  C08F2/34 ,  C08F2/01

    CPC分类号： B01J19/2435 ,  B01J19/2465 ,  B01J2219/00087 ,  C08F10/00 ,  C08F110/02 ,  C08F110/06 ,  Y10S526/901 ,  C08F2/34 ,  C08F2/001 ,  C08F2/01 ,  C08F2500/05 ,  C08F2500/15

    摘要： A process for the polymerisation of olefins carried out in a gas-phase reactor having interconnected polymerization zones, where the growing polymer particles flow upward through a first polymerization zone (riser) under fast fluidization or transport conditions, leave said riser and enter a second polymerization zone (downcomer) through which they flow downward under the action of gravity, leave said downcomer and are reintroduced into the riser, a gas recycle stream being withdrawn from said first polymerisation zone, subjected to cooling below its dew point and then returned to said first polymerisation zone, the process being characterised in that said gas recycle stream is cooled at a temperature Tc ranging from 0.05°C to 3°C below its dew point.

    摘要翻译： 在具有互连聚合区的气相反应器中进行烯烃聚合的方法，其中生长的聚合物颗粒在快速流化或运输条件下向上流过第一聚合区（提升管），离开所述提升管并进入第二聚合 （降液管），在重力作用下它们向下流动，离开所述降液管并被再次引入提升管，从所述第一聚合区排出气体再循环流，经受冷却到其露点以下，然后返回到所述第一 该方法的特征在于所述气体再循环流在低于其露点0.05℃至3℃的温度Tc下冷却。

    NUCLEATED PROPYLENE-BASED POLYOLEFIN COMPOSITIONS
    8.
    发明公开
    NUCLEATED PROPYLENE-BASED POLYOLEFIN COMPOSITIONS 有权
    NUKLEIERTE POLYOLEFINZUSAMMENSETZUNGEN AUF PROPLENBASIS

    公开(公告)号：EP2986652A1

    公开(公告)日：2016-02-24

    申请号：EP14709338.9

    申请日：2014-03-12

    申请人： Basell Poliolefine Italia S.r.l.

    发明人： GALVAN, Monica ,  NEUMANN, Andreas ,  CAPUTO, Tiziana ,  MAZZUCCO, Antonio ,  PELLEGATTI, Giampaolo

    IPC分类号： C08F210/06

    CPC分类号： C08K5/527 ,  C08F210/16 ,  C08K5/0083 ,  C08K5/098 ,  C08K5/1575 ,  C08F210/06 ,  C08F4/651 ,  C08L23/14

    摘要： A polyolefin composition, particularly fit for the production of extrusion blow molded articles, comprising (a) a propylene-ethylene copolymer having a content of units deriving from ethylene of 4.0 % by weight or higher, and (b) a nucleating agent and having a crystallization temperature (Tc) higher than 117°C can be obtained by copolymerizing propylene and ethylene in the presence of a catalyst system obtained by contacting a solid catalyst component comprising a magnesium halide, a titanium compound having at least a Ti-halogen bond and at least two electron donor compounds one of which being present in an amount from 40 to 90% by mol with respect to the total amount of donors and selected from succinates and the other selected from 1,3 diethers, an aluminum hydrocarbyl compound, and optionally an external electron donor compound.

    摘要翻译： 一种聚烯烃组合物，特别适用于生产挤出吹塑制品，其包含（a）乙烯衍生物的含量为4.0重量％以上的丙烯 - 乙烯共聚物，和（b）成核剂，并具有 在通过使包含卤化镁的固体催化剂组分，至少具有Ti-卤素键的钛化合物的固体催化剂组分和在至少含有Ti-卤素键的钛化合物的溶剂存在下，在丙烯与乙烯之间进行共聚，可以获得高于117℃的结晶温度（Tc） 至少两种电子给体化合物，其中一种以相对于供体总量为40至90摩尔％的量存在，选自琥珀酸盐，另一种选自1,3-二醚，铝烃基化合物和任选的 外电子给体化合物。