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    CONTINUOUS ETHYLENE TETRAMERIZATION PROCESS
    1.
    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。

    Shrink film from single site catalyzed polyethylene
    6.
    发明授权
    Shrink film from single site catalyzed polyethylene 有权

    公开(公告)号：US10093780B2

    公开(公告)日：2018-10-09

    申请号：US14859395

    申请日：2015-09-21

    申请人： NOVA Chemicals (International) S.A.

    发明人： XiaoChuan Wang ,  Peter Zoricak ,  Norman Dorien Joseph Aubee ,  Stephen John Brown

    IPC分类号： B32B27/08 ,  C08J5/18 ,  B32B27/32 ,  C08L23/08 ,  B32B27/30

    摘要： Shrink film having a desirable balance of properties is manufactured from a polyethylene blend composition having a fractional melt index and a molecular weight distribution of from about 2.5 to about 7. The blend composition comprises a first blend component that is made with a single site catalyst and has a molecular weight of greater than about 140,000 and a first density, d1. The blend composition also contains a second blend component having a lower molecular weight and a second density, d2, that is greater than the density of d1 in an amount of from about 0.018 to about 0.032 g/cc. The films of this disclosure may be used, for example, as an overwrap or pallet wrap to protect goods during shipping and in food packaging applications (such as shrink wrap for frozen poultry).