Process for preparing polyolefins
    5.
    发明授权
    Process for preparing polyolefins 失效
    聚烯烃的制备方法

    公开(公告)号:US5369193A

    公开(公告)日:1994-11-29

    申请号:US967556

    申请日:1992-10-27

    CPC分类号: C08F10/00

    摘要: Polyolefins exhibiting better particle properties are prepared by polymerizing an olefin or olefins in the presence of a catalyst comprising a solid catalyst component and an organometallic compound, the solid catalyst component being prepared by reacting the following components [I] and [II] at first and then reacting the reaction product thus obtained with the following component [III]:[I] a reaction product obtained by reacting:(1) a silicon oxide and/or an aluminum oxide, and(2) a titanium compound, or a titanium compound and a vanadium compound,[II] a reaction product obtained by the reaction of:(1) a magnesium halide,(2) a compound represented by the general formula Me(OR).sub.n X.sub.z-n wherein Me represents an element of J Groups I to IV in the Periodic Table, z represents the valence of the element Me, n is 0

    摘要翻译: 通过在包含固体催化剂组分和有机金属化合物的催化剂存在下聚合烯烃或烯烃制备出具有更好颗粒性能的聚烯烃,该固体催化剂组分通过首先使下列成分[I]和[II]反应而制备, 然后将所得反应产物与以下组分[III]反应:[I]通过使(1)氧化硅和/或氧化铝反应获得的反应产物,和(2)钛化合物或钛化合物 和钒化合物,[II]通过以下反应获得的反应产物:(1)卤化镁,(2)由通式Me(OR)n Xz-n表示的化合物,其中Me表示J组I 至IV元素,z表示元素Me的化合价,n为0

    MULTI-STAGE PROCESS FOR PRODUCING MULTI-MODAL LINEAR LOW DENSITY POLYETHYLENE
    8.
    发明申请
    MULTI-STAGE PROCESS FOR PRODUCING MULTI-MODAL LINEAR LOW DENSITY POLYETHYLENE 有权
    用于生产多模式线性低密度聚乙烯的多级方法

    公开(公告)号:US20110263801A1

    公开(公告)日:2011-10-27

    申请号:US13126496

    申请日:2010-02-22

    摘要: Multi-stage polymerization process for the production of a multi-modal linear low density polyethylene in at least two staged reactors connected in series comprising at least (i) polymerizing in a first slurry phase stage ethylene monomers and optionally one or more alpha-olefin comonomers, in the presence of a Ziegler-Natta polymerization catalyst system to obtain a first polyethylene fraction component (A) (ii) polymerizing in a second gas or slurry phase stage ethylene monomers and one or more alpha-olefine comonomers, in the presence of a Ziegler-Natta polymerization catalyst system to obtain a second polyethylene fraction component (B), whereby the Ziegler-Natta polymerization catalyst system comprises: 1) a solid procatalyst formed by contacting at least: a) a Mg-alcoholate complex of the formula (I): Mg(OR1)2-n(R1)n, wherein each R1 independently represents a C1-C20 hydrocarbyl group and 0

    摘要翻译: 用于在至少两个串联反应器中连续串联生产多模式线性低密度聚乙烯的多级聚合方法,包括至少(i)在第一浆料相阶段聚合乙烯单体和任选的一种或多种α-烯烃共聚单体 在齐格勒 - 纳塔聚合催化剂体系存在下,得到第一聚乙烯级分组分(A)(ⅱ)在第二种气相或淤浆相阶段中聚合乙烯单体和一种或多种α-烯烃共聚单体,在 齐格勒 - 纳塔聚合催化剂体系,以获得第二聚乙烯部分组分(B),由此齐格勒 - 纳塔聚合催化剂体系包括:1)通过使至少与下式接触形成的固体前催化剂:a)式 ):Mg(OR 1)2-n(R 1)n,其中每个R 1独立地表示C 1 -C 20烃基且0

    Process for preparing polyolefins
    10.
    发明授权
    Process for preparing polyolefins 失效
    聚烯烃的制备方法

    公开(公告)号:US5644008A

    公开(公告)日:1997-07-01

    申请号:US546824

    申请日:1995-10-23

    CPC分类号: C08F10/00 C08F210/16

    摘要: Olefin is polymerized using a catalyst comprising a solid catalyst component and an organometallic compound, the solid catalyst component being prepared by reacting 1 a reaction product obtained by reacting the reaction product of Si oxide and/or Al oxide and Ti compound or both Ti compound and V compound (Ti.V component) with organic Al compound, with 2 a reaction product obtained by the reaction of Mg halide, a compound of the general formula Me(OR).sub.n X.sub.z-n and Ti.V component (optional component), and further reacting the reaction product of the above 1 and 2 with 3 a compound of the general formula R.sub.p Si(OR).sub.q X.sub.4-p-q.

    摘要翻译: 烯烃使用包含固体催化剂组分和有机金属化合物的催化剂聚合,所述固体催化剂组分通过使+ E,crc 1 + EE与Si氧化物和/或氧化铝的反应产物和Ti 化合物或Ti化合物和V化合物(Ti.V组分)与有机Al化合物,+ E,crc 2 + EE反应产物,通过卤化镁,通式Me(OR)nXz- n和Ti.V组分(任选组分),并进一步使上述+ E,crc 1 + EE和+ E,crc 2 + EE与+ E,crc 3 + EE的反应产物与通式RpSi (OR)qX4-pq。