Use of chelatable phenols with metallocene- aluminoxane catalyst systems
    3.
    发明授权
    Use of chelatable phenols with metallocene- aluminoxane catalyst systems 失效
    使用可螯合酚与茂金属 - 铝氧烷催化剂体系

    公开(公告)号:US06281320B1

    公开(公告)日:2001-08-28

    申请号:US09244442

    申请日:1999-02-04

    IPC分类号: C08F1000

    摘要: This invention comprises a metallocene catalyst system for the production of high molecular weight polyolefins, particularly polyethylene and higher poly-alpha olefins, and copolymers of ethylene and/or alpha olefins with other unsaturated monomers, including diolefins, acetylenically unsaturated monomers and cyclic olefins. The catalyst system is highly active, at low ratios of Al to transition metal, and hence catalyzes the production of a polyolefin product containing low levels of catalyst metal residues. The catalyst system comprises (i) a metallocene precursor (Component A), aluminoxane (Component B), and phenolic modifier (Component C) or (ii) the reaction product of a metallocene precursor with a phenolic compound (Component A′) and aluminoxane (Component B). There is also provide a polymerization process using the catalyst and the product so produced.

    摘要翻译: 本发明包括用于生产高分子量聚烯烃,特别是聚乙烯和更高级聚-α-烯烃的茂金属催化剂体系,以及乙烯和/或α-烯烃与其它不饱和单体(包括二烯烃,炔属不饱和单体和环烯烃)的共聚物。 催化剂体系在Al与过渡金属的低比例下是高活性的,因此催化了含有低水平催化剂金属残余物的聚烯烃产物的生产。 催化剂体系包括(i)茂金属前体(组分A),铝氧烷(组分B)和酚类改性剂(组分C)或(ii)金属茂前体与酚类化合物(组分A')和铝氧烷的反应产物 (组分B)。 还提供使用催化剂和如此制备的产物的聚合方法。

    Supported metallocene-alkyl catalyst composition
    7.
    发明授权
    Supported metallocene-alkyl catalyst composition 有权
    负载的茂金属 - 烷基催化剂组合物

    公开(公告)号:US07323526B2

    公开(公告)日:2008-01-29

    申请号:US11192935

    申请日:2005-07-29

    IPC分类号: C08F4/76 C08F4/52 B01J31/38

    摘要: A supported catalyst composition having improved flow properties is disclosed comprising an alkylalumoxane, a metallocene-alkyl an inorganic oxide support having an average particle size of from 0.1 to 50 μm and calcined at a temperature greater than 600° C., and optionally an antifoulant agent and. In one embodiment, the metallocene-alkyl is a Group 4, 5 or 6 metallocene-alkyl, and in another embodiment is a hafnocene-alkyl. Also disclosed is a method of polymerization using such a supported catalyst composition.

    摘要翻译: 公开了具有改进的流动性质的负载型催化剂组合物,其包含烷基铝氧烷,茂金属 - 烷基和平均粒度为0.1-50μm的无机氧化物载体,并且在大于600℃的温度下煅烧,以及任选的防污剂 和。 在一个实施方案中,茂金属 - 烷基是第4,5或6族茂金属 - 烷基,在另一个实施方案中是茂金属 - 烷基。 还公开了使用这种负载型催化剂组合物的聚合方法。

    Catalyst system and its use in olefin polymerization
    10.
    发明授权
    Catalyst system and its use in olefin polymerization 有权
    催化剂体系及其在烯烃聚合中的应用

    公开(公告)号:US06605563B1

    公开(公告)日:2003-08-12

    申请号:US10359933

    申请日:2003-02-06

    IPC分类号: C08F464

    摘要: A polymerization catalyst system and a method for preparing the catalyst system is disclosed. The catalyst system includes a bulky ligand metallocene catalyst compound, preferably containing a single cyclopentadienyl or substituted cyclopentadienyl-type ring system, a Group 13 element containing first modifier, and a cycloalkadiene second modifier. The present invention also provides a process for polymerizing olefin(s) utilizing the catalyst systems described herein.

    摘要翻译: 公开了聚合催化剂体系和制备催化剂体系的方法。 催化剂体系包括体积庞大的配位金属茂催化剂化合物,优选含有单个环戊二烯基或取代的环戊二烯基型环系,含有第13族元素的第一改性剂和环二烯二烯改性剂。 本发明还提供了利用本文所述的催化剂体系聚合烯烃的方法。