Method for preparation of boratabenzene derivatives
    4.
    发明授权
    Method for preparation of boratabenzene derivatives 失效
    硼代苯衍生物的制备方法

    公开(公告)号:US06410764B1

    公开(公告)日:2002-06-25

    申请号:US09764722

    申请日:2001-01-18

    IPC分类号: C07F502

    CPC分类号: C07F17/00 C07F5/027

    摘要: A process for preparing boratabenzene derivatives is provided. The process includes the hydrogenation of a compound containing a boranaphthalene functional group to form a boratabenzene-containing compound. Depending on the compound containing a boranaphthalene functional group, the resulting boratabenzene compound may be converted into a catalyst suitable for olefin polymerization. A process for forming a boratabenzene derivative from a halo-dioxaborolane is also provided. In this process, a halo-dioxaborolane is reacted with a piperylide salt for form a pentadienyl dioxaborolane. The pentadienyl-dioxaborolane is reacted with a strong base to form an intermediate boratacyclohexanediene salt. The intermediate boratacyclohexanediene salt is then reacted with a trialkylaluminum compound to form an alkylboratabenzene salt.

    摘要翻译: 提供了一种制备硼代苯衍生物的方法。 该方法包括含有硼烷官能团的化合物的氢化以形成含硼代苯的化合物。 根据含有硼烷官能团的化合物,所得的硼代苯化合物可以转化为适用于烯烃聚合的催化剂。 还提供了由卤代二氧硼烷制备硼代苯衍生物的方法。 在该方法中,将卤代二氧杂硼杂环戊烷与哌啶子盐反应形成戊二烯基二氧杂硼杂环戊烷。 将戊二烯基二氧杂硼杂环戊烷与强碱反应形成中间体硼烷环己烷二盐。 然后将中间体硼烷环己二烯盐与三烷基铝化合物反应以形成烷基硼代苯盐。

    Olefin polymerization process
    6.
    发明授权
    Olefin polymerization process 有权
    烯烃聚合工艺

    公开(公告)号:US6127484A

    公开(公告)日:2000-10-03

    申请号:US302059

    申请日:1999-04-29

    IPC分类号: C08L23/04 C08F8/00 C08L23/00

    摘要: A multiple stage or multiple zone process for making olefin polymers is disclosed. A single-site catalyst, preferably one that contains a heteroatomic ligand, is used in the first stage or zone, and a Ziegler-Natta catalyst is used at a higher temperature in later stages or zones. A parallel multiple zone process is also described. The processes, which can be performed adiabatically, give polymers with improved thermal processing ability.

    摘要翻译: 公开了制备烯烃聚合物的多级或多区域方法。 在第一阶段或区域中使用单中心催化剂,优选含有杂原子配体的单中心催化剂,并且在后期阶段或区域中以更高的温度使用齐格勒 - 纳塔催化剂。 还描述了并行多区域过程。 可以绝热地进行的方法给具有改进的热处理能力的聚合物。

    Olefin polymerization method
    7.
    发明授权

    公开(公告)号:US5202397A

    公开(公告)日:1993-04-13

    申请号:US923147

    申请日:1992-07-31

    摘要: A multiple site solid catalyst component capable of producing polyolefins having a broad or multimodal molecular weight distribution, such as a bimodal molecular weight distribution, is prepared by contacting a particulate solid support with a zirconium compound or complex to bind the zirconium compound or complex to the support, optionally followed by contacting the supported zirconium compound or complex with a Lewis acid to produce an intermediate product, optionally isolating and washing the supported zirconium compound or complex or resulting intermediate product to remove soluble by-products therefrom, and reacting the washed or unwashed supported zirconium compound or complex or intermediate product with a titanium or vanadium compound to produce a solid catalyst component.

    Multiple site olefin polymerization catalysts
    8.
    发明授权
    Multiple site olefin polymerization catalysts 失效
    多位烯烃聚合催化剂

    公开(公告)号:US5155079A

    公开(公告)日:1992-10-13

    申请号:US712206

    申请日:1991-06-07

    CPC分类号: C08F10/02

    摘要: A multiple site solid catalyst component capable of producing polyolefins having a broad or multimodal molecular weight distribution, such as a bi-modal molecular weight distribution, is prepared by contacting a particulate solid support with a zirconium compound or complex to bind the zirconium compound or complex to the support, optionally followed by contacting the supported zirconium compound or complex with a Lewis acid to produce an intermediate product, optionally isolating and washing the supported zirconium compound or complex or resulting intermediate product to remove soluble by-products therefrom, and reacting the washed or unwashed supported zirconium compound or complex or intermediate product with a titanium or vanadium compound to produce a solid catalyst component.

    Olefin polymerization method
    9.
    发明授权
    Olefin polymerization method 失效
    烯烃聚合法

    公开(公告)号:US5369194A

    公开(公告)日:1994-11-29

    申请号:US23135

    申请日:1993-02-24

    CPC分类号: C08F10/02

    摘要: A multiple site solid catalyst component capable of producing polyolefins having a broad or multimodal molecular weight distribution, such as a bimodal molecular weight distribution, is prepared by contacting a particulate solid support with a zirconium compound or complex to bind the zirconium compound or complex to the support, optionally followed by contacting the supported zirconium compound or complex with a Lewis acid to produce an intermediate product, optionally isolating and washing the supported zirconium compound or complex or resulting intermediate product to remove soluble by-products therefrom, and reacting the washed or unwashed supported zirconium compound or complex or intermediate product with a titanium or vanadium compound to produce a solid catalyst component.

    摘要翻译: 通过使颗粒状固体载体与锆化合物或络合物接触,将锆化合物或络合物与锆的化合物或络合物接触,制备能够生产具有宽或多峰分子量分布如双峰分子量分布的聚烯烃的多部位固体催化剂组分 任选地将负载的锆化合物或络合物与路易斯酸接触以产生中间产物,任选地分离和洗涤负载的锆化合物或络合物或所得中间产物以从其中除去可溶性副产物,并将洗涤或未洗涤的 负载的锆化合物或复合物或中间产物与钛或钒化合物反应以产生固体催化剂组分。