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    CONTINUOUS ETHYLENE TETRAMERIZATION PROCESS
    4.
    发明申请
    CONTINUOUS ETHYLENE TETRAMERIZATION PROCESS 有权
    连续乙烯四面体方法

    公开(公告)号：US20150284303A1

    公开(公告)日：2015-10-08

    申请号：US14443838

    申请日：2013-12-04

    申请人： Peter ZORICAK ,  Stephen John BROWN ,  P. Scott CHISHOLM ,  NOVA CHEMICALS (INTERNATIONAL) S.A.

    发明人： Peter Zoricak ,  Stephen John Brown ,  P. Scott Chisholm

    IPC分类号： C07C2/34

    CPC分类号： C07C2/34 ,  C07C2/36 ,  C07C2523/26 ,  C07C2531/14 ,  C07C2531/22 ,  C07C2531/24 ,  Y02P20/52 ,  C07C11/02

    摘要： A continuous flow process for the oligomerization of ethylene using a chromium catalyst having a phosphorus-nitrogen-phosphorus (“P—N—P”) ligand provides high selectivity to the desired tetramer (1-octene) with reduced production of coproduct C10+ oligomers. Prior art processes that maximize catalyst activity have provided comparatively poor product selectivity. In particular, the production of larger amounts of C10+ oligomers have been observed under conditions that maximize activity. The present process resolves this problem through the use of a combination of low catalyst concentration and by limiting the octene concentration in the reactor.

    摘要翻译： 使用具有磷 - 氮 - 磷（“P-N-P”）配体的铬催化剂使乙烯低聚的连续流动方法对所需的四聚体（1-辛烯）提供了高选择性，同时产生了副产物C10 +低聚物。 使催化剂活性最大化的现有技术方法提供了较差的产物选择性。 特别地，在活性最大化的条件下观察到产生较大量的C10 +低聚物。 本方法通过使用低催化剂浓度和限制反应器中辛烯浓度的组合来解决这个问题。

    Solution polymerization of ethylene
    5.
    发明授权
    Solution polymerization of ethylene 有权
    乙烯溶液聚合

    公开(公告)号：US06221985B1

    公开(公告)日：2001-04-24

    申请号：US09229861

    申请日：1999-01-13

    申请人： Xiaoliang Gao ,  Qinyan Wang ,  Rupert Edward von Haken Spence ,  Stephen John Brown ,  Peter Zoricak

    发明人： Xiaoliang Gao ,  Qinyan Wang ,  Rupert Edward von Haken Spence ,  Stephen John Brown ,  Peter Zoricak

    IPC分类号： C08F444

    CPC分类号： C08F10/00 ,  C07F17/00 ,  C08F4/65908 ,  C08F210/16 ,  Y10S526/943 ,  C08F4/6592 ,  C08F2/06 ,  C08F210/14 ,  C08F2500/12

    摘要： A medium pressure process for the solution polymerization of ethylene at a temperature of from 80° C. to 250° C. in the presence of a catalyst system comprising (1) a catalyst component which is a group 4 metal complex having a delocalized, cyclic, pi-bonded ligand, a (defined, specific) heteroligand and one or two activatable ligands; and (2) an ionic activator which does not contain an active proton. The catalyst component is unbridged and easily synthesized. It is highly active in solution polymerization when properly activated (but is not active when used in combination with an alumoxane). Preferred catalyst systems contain an unbridged monocyclopentadienyl titanium (IV) complex and triphenylcarbenium tetrakis (pentafluorophenyl) borate.

    摘要翻译： 在催化剂体系的存在下，在80℃至250℃的温度下乙烯的溶液聚合的中压方法，包括（1）催化剂组分，其是具有离域的环状的第4族金属络合物 ，π键合配体，（限定的，特异性的）杂配偶体和一个或两个可激活的配体; 和（2）不含活性质子的离子活化剂。 催化剂组分是未桥接的并且易于合成。 当溶剂聚合适当地活化时（但与铝氧烷结合使用时，其不具有活性），它是非常活泼的。 优选的催化剂体系包含未桥连的单环戊二烯基钛（IV）络合物和四（五氟苯基）硼酸三苯基碳鎓。

    Multi reactor process
    7.
    发明申请
    Multi reactor process 有权
    多反应堆工艺

    公开(公告)号：US20110144289A1

    公开(公告)日：2011-06-16

    申请号：US12928197

    申请日：2010-12-06

    申请人： Lauwrence Martin Jozef Van Asseldonk ,  Stephen John Brown

    发明人： Lauwrence Martin Jozef Van Asseldonk ,  Stephen John Brown

    IPC分类号： C08F2/01

    CPC分类号： C08F210/16 ,  C08F2/06 ,  C08F2/001 ,  C08F210/14 ,  C08F2500/12

    摘要： This invention relates to the polymerization of ethylene polymers using a continuously stirred tank reactor (CSTR) that is connected in series to a tubular reactor. The tubular reactor receives a polymer solution from the CSTR. Further polymerization in the tubular reactor improves production efficiencies, particularly with respect to lowering the amount of energy required to recover the polymer and residual comonomer from the solution. The use of tempered i.e. (heated) ethylene in the tubular reactor has been discovered to mitigate gel problems and lower/reduce levels of hexane extractables.

    摘要翻译： 本发明涉及使用与管式反应器串联连续搅拌的罐式反应器（CSTR）聚合乙烯聚合物。 管式反应器从CSTR接收聚合物溶液。 管式反应器中的进一步聚合提高了生产效率，特别是在降低从溶液中回收聚合物和残余共聚单体所需的能量的量方面。 已经发现在管式反应器中使用回火（即加热的）乙烯以减轻凝胶问题并降低/降低己烷可萃取物的含量。