Methods for Polyolefin Polymerization with High Activity Catalyst Systems
    7.
    发明申请
    Methods for Polyolefin Polymerization with High Activity Catalyst Systems 有权
    高活性催化剂体系聚烯烃聚合方法

    公开(公告)号:US20150031842A1

    公开(公告)日:2015-01-29

    申请号:US14296616

    申请日:2014-06-05

    Abstract: A method is provided for polymerizing an olefin monomer in a reactor with a highly active polyolefin polymerization catalyst system. The method includes introducing a catalyst system comprising a catalyst and a catalyst activator into the reactor containing the olefin monomer with less than 10 seconds or no pre-contacting time of the catalyst and the catalyst activator prior to introducing the catalyst and the catalyst activator into the reactor. The catalyst system may have a standard adjusted catalyst activity of greater than 10 gPgcat−1hr−1.

    Abstract translation: 提供了一种使反应器中的烯烃单体与高活性聚烯烃聚合催化剂体系聚合的方法。 该方法包括在将催化剂和催化剂活化剂引入到催化剂和催化剂活化剂之前,将包含催化剂和催化剂活化剂的催化剂体系引入到含有烯烃单体的反应器中,其中催化剂和催化剂活化剂在催化剂和催化剂活化剂中的时间少于10秒, 反应堆。 催化剂体系可具有大于10gPgcat-1hr-1的标准调节催化剂活性。

    High impact polypropylene impact copolymer

    公开(公告)号:US11505685B2

    公开(公告)日:2022-11-22

    申请号:US16624630

    申请日:2018-04-11

    Abstract: Disclosed is a polypropylene with an MFR of at least 20 g/10 min comprising a homopolypropylene and within a range from 2 wt % to 20 wt % of a propylene-α-olefin copolymer by weight of the polypropylene, where the homopolypropylene has a MFR within a range from 30 g/10 min to 200 g/10 min, where the propylene-α-olefin copolymer comprises within a range from 30 wt % to 50 wt % α-olefin derived units by weight of the propylene-α-olefin copolymer, and has an IV within a range from 4 to 9 dL/g. The polypropylene may be obtained by combining a Ziegler-Natta catalyst having two transition metals with propylene in reactors in series to produce the homopolypropylene followed by a gas phase reactor to produce a propylene-α-olefin copolymer blended with the homopolypropylene.

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