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    Easy processing linear low density polyethylene
    14.
    发明授权
    Easy processing linear low density polyethylene 失效
    易加工线性低密度聚乙烯

    公开(公告)号：US06255426B1

    公开(公告)日：2001-07-03

    申请号：US09048569

    申请日：1998-03-26

    Applicant: Ching-Tai Lue ,  Natalie A. Merrill ,  Michael E. Muhle ,  George Alan Vaughan

    Inventor： Ching-Tai Lue ,  Natalie A. Merrill ,  Michael E. Muhle ,  George Alan Vaughan

    IPC: C08F21000

    CPC classification number: C08J5/18 ,  C08F4/65912 ,  C08F4/65927 ,  C08F210/16 ,  C08J2323/08 ,  Y10S526/901 ,  Y10S526/943 ,  C08F4/65916 ,  C08F210/14 ,  C08F2500/12 ,  C08F2500/10 ,  C08F2500/26

    Abstract: A polymer of ethylene and at least one alpha olefin having at least 5, carbon atoms obtainable by a continuous gas phase polymerization using supported catalyst of an activated molecularly discrete catalyst such as a metallocene in the substantial absence of an aluminum alkyl based scavenger which polymer has a Melt Index (MI) as herein defined of from 0.1 to 15; a Compositional Distribution Breadth Index (CDBI) as defined herein of at least 70%, a density of from 0.910 to 0.930 g/ml; a Haze value as herein defined of less than 20%; a Melt Index ratio (MIR) as herein defined of from 35 to 80; an averaged Modulus (M) as herein defined of from 20 000 to 60 000 psi (pounds per square inch) and a relation between M and the Dart Impact Strength in g/mil (DIS) complying with the formula: DIS≧0.8×[100+e(11.71−0.000268×M+2.183×10−9×M2)].

    Abstract translation: 乙烯和至少一种具有至少5个碳原子的α-烯烃的聚合物，其可通过使用活性分子催化剂如金属茂的负载型催化剂在连续气相聚合中获得，基本上不含烷基铝基清除剂 本文定义的熔体指数（MI）为0.1至15; 如本文所定义的组成分布宽度指数（CDBI）至少为70％，密度为0.910至0.930g / ml; 本文定义的雾度值小于20％; 本文定义的熔体指数比（MIR）为35至80; 如本文定义的平均模量（M）为20 000至60 000psi（磅/平方英寸），以及M和以g / mil（DIS）计的撞击强度之间的关系：符合下列公式：

    METALLOCENE CATALYSTS AND THEIR USE IN POLYMERIZATION PROCESSES
    17.
    发明申请
    METALLOCENE CATALYSTS AND THEIR USE IN POLYMERIZATION PROCESSES 有权
    金属催化剂及其在聚合工艺中的应用

    公开(公告)号：US20100298511A1

    公开(公告)日：2010-11-25

    申请号：US12739308

    申请日：2008-10-09

    Applicant: Chi-I Kuo ,  Dongming Li ,  Ching-Tai Lue ,  Francis C. Rix ,  Mark G. Goode ,  Daniel P. Zilker, JR. ,  Tae Hoon Kwalk

    Inventor： Chi-I Kuo ,  Dongming Li ,  Ching-Tai Lue ,  Francis C. Rix ,  Mark G. Goode ,  Daniel P. Zilker, JR. ,  Tae Hoon Kwalk

    IPC: C08F4/54

    CPC classification number: B01J31/2295 ,  B01J2531/48 ,  B01J2531/49 ,  C08F4/65912 ,  C08F4/65916 ,  C08F210/16 ,  C08F4/65925 ,  C08F4/65927

    Abstract: A process for polymerizing olefin(s) utilizing a cyclic bridged metallocene catalyst system to produce polymers with improved properties is provided. The catalyst system may include a cyclic bridged metallocene, LA(R′SiR′)LBZrQ2, activated by an activator, the activator comprising aluminoxane, a modified aluminoxane, or a mixture thereof, and supported by a support, where: LA and LB are independently an unsubstituted or a substituted cyclopentadienyl ligand bonded to Zr and defined by the formula (C5H4-dRd), where R is hydrogen, a hydrocarbyl substituent, a substituted hydrocarbyl substituent, or a heteroatom substituent, and where d is 0, 1, 2, 3 or 4; LA and LB are connected to one another with a cyclic silicon bridge, R′SiR′, where R′ are independently hydrocarbyl or substituted hydrocarbyl substituents that are connected with each other to form a silacycle ring; and each Q is a labile hydrocarbyl or a substituted hydrocarbyl ligand.

    Abstract translation: 提供了利用环状桥连金属茂催化剂体系聚合烯烃以制备具有改进性能的聚合物的方法。 催化剂体系可以包括由活化剂活化的环状桥连金属茂LA（R'SiR'）LBZrQ2，活化剂包括铝氧烷，改性铝氧烷或其混合物，并由载体支持，其中：LA和LB是 独立地是未取代的或取代的环戊二烯基配体，其与Zr键合并由式（C5H4-dRd）定义，其中R是氢，烃基取代基，取代的烃基取代基或杂原子取代基，其中d是0,1,2 ，3或4; LA和LB通过环硅桥R'SiR'彼此连接，其中R'独立地是彼此连接形成硅环的烃基或取代的烃基取代基; 并且每个Q是不稳定的烃基或取代的烃基配体。

    Aluminum based lewis acid cocatalysts for olefin polymerization
    19.
    发明授权
    Aluminum based lewis acid cocatalysts for olefin polymerization 有权
    用于烯烃聚合的铝基路易斯酸助催化剂

    公开(公告)号：US6147174A

    公开(公告)日：2000-11-14

    申请号：US350521

    申请日：1999-07-09

    Applicant: Matthew W. Holtcamp ,  Ching-Tai Lue

    Inventor： Matthew W. Holtcamp ,  Ching-Tai Lue

    IPC: C08F4/02 ,  C08F4/602 ,  C08F4/6192 ,  C08F4/642 ,  C08F4/6592 ,  C08F10/00 ,  C08F210/16 ,  C08F4/44 ,  C07F5/06

    CPC classification number: C08F210/16 ,  C08F10/00 ,  C08F4/65925 ,  C08F4/65927 ,  Y10S526/901 ,  Y10S526/943

    Abstract: This invention is directed to a process for the preparation of polyolefins from one or more olefinic monomers comprising combining said olefins under olefin polymerization conditions with an organometallic catalyst compound that is activated for olefin polymerization by reaction with at least one Lewis acid aluminum compound of the formula R.sub.n Al(ArHal).sub.3-n, where "ArHal" is a halogenated aryl group, n=1 or 2, and R is a monoanionic group other than a halogenated aryl group. The invention also relates to a polymer produced using the process and to the polymer itself.

    Abstract translation: 本发明涉及从一种或多种烯烃单体制备聚烯烃的方法，包括在烯烃聚合条件下将所述烯烃与通过与至少一种式（I）的路易斯酸铝化合物反应而被活化用于烯烃聚合的有机金属催化剂化合物 RnAl（ArHal）3-n，其中“ArHal”是卤代芳基，n = 1或2，R是卤代芳基以外的单阴离子基团。 本发明还涉及使用该方法制备的聚合物和聚合物本身。

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