Process of producing a supported mixed catalyst system and polyolefins therefrom
    5.
    发明授权
    Process of producing a supported mixed catalyst system and polyolefins therefrom 有权
    由其制备负载型混合催化剂体系和聚烯烃的方法

    公开(公告)号:US07199072B2

    公开(公告)日:2007-04-03

    申请号:US10664301

    申请日:2003-09-16

    摘要: A process for preparing a mixed catalyst compound used in the polymerization of polyolefins to produce bimodal polyethylenes is disclosed. In an embodiment, a process of preparing the mixed catalyst system includes: mixing a first catalyst and an activator in a first liquid medium to form a first mixture, combining a support with the first mixture to form a first support slurry, drying the first support slurry in an extent sufficient to provide a dried supported first catalyst, mixing the dried supported first catalyst in a second liquid medium to form a second support slurry, and combining one or more additional catalysts with the second support slurry to provide the mixed catalyst compound.

    摘要翻译: 公开了一种制备用于聚烯烃聚合制备双峰聚乙烯的混合催化剂化合物的方法。 在一个实施方案中,制备混合催化剂体系的方法包括:将第一催化剂和活化剂混合在第一液体介质中以形成第一混合物,将载体与第一混合物组合以形成第一载体浆料,干燥第一载体 浆料在足以提供干燥的负载的第一催化剂的程度上,将经干燥的负载的第一催化剂混合在第二液体介质中以形成第二载体浆料,并将一种或多种另外的催化剂与第二载体浆料混合以提供混合的催化剂化合物。

    POLYMERIZATION PROCESS
    9.
    发明申请
    POLYMERIZATION PROCESS 有权
    聚合工艺

    公开(公告)号:US20100093954A1

    公开(公告)日:2010-04-15

    申请号:US12637349

    申请日:2009-12-14

    IPC分类号: C08F4/76

    摘要: The invention relates to a polymerization process, the polymerization process includes contacting a cyclic bridged metallocene catalyst represented by the following formula: LA(A)LBMQn wherein A is a divalent group bound to each of LA and LB; each of LA and LB are bound to M, and each Q is bound to M; LA and LB are independently selected from the group consisting of cyclopentadienyl ligands and substituted cyclopentadienyl ligands; A is a divalent bridging group comprising a heterocyclic ring comprising from 3 to 6 carbon atoms and one silyl, thus forming a 4 to 7 member divalent ring; M is a Group 4, 5, or 6 transition metal; Q is independently a halogen, a hydride, or a hydrocarbyl radical having from 1 to 20 carbon atoms; wherein n is 1 or 2; with an activator, and optionally a support, to form an activated catalyst and, subsequently, contacting the activated catalyst with ethylene and optionally, at least one C3-C8 alpha olefin comonomer.

    摘要翻译: 本发明涉及聚合方法,聚合方法包括使由下式表示的环状桥连金属茂催化剂:LA(A)LBMQn,其中A是与LA和LB各自结合的二价基团; LA和LB各自与M结合,每个Q与M相连; LA和LB独立地选自环戊二烯基配体和取代的环戊二烯基配体; A是包含含有3至6个碳原子的杂环和1个甲硅烷基的二价桥连基,从而形成4至7元的二价环; M是第4,5或6族过渡金属; Q独立地为卤素,氢化物或具有1至20个碳原子的烃基; 其中n为1或2; 与活化剂和任选的载体形成活化的催化剂,随后使活化的催化剂与乙烯和任选的至少一种C 3 -C 8α-烯烃共聚单体接触。