MULTISTAGE PROCESS FOR THE POLYMERIZATION OF OLEFINS
    73.
    发明申请
    MULTISTAGE PROCESS FOR THE POLYMERIZATION OF OLEFINS 失效
    烯烃聚合的多种方法

    公开(公告)号:US20110003948A1

    公开(公告)日:2011-01-06

    申请号:US12735218

    申请日:2008-12-23

    IPC分类号: C08F2/01

    摘要: A multistage process for the homo or copolymerization of ethylene carried out in the presence of a catalyst system comprising at least one polymerization catalyst (A) based on a late transition metal component having a tridentate ligand which bears at least two ortho.ortho-disubstituted aryl radicals, at least one Ziegler polymerization catalyst (B), and at least a Lewis acid activating compound (C), wherein the molar ratio of the metal of the activating compound (C) to the late transition metal of catalyst (A) is different in the two polymerizations steps. Catalysts (A) and (B) may be selectively controlled by varying the amount of activating compound (C).

    摘要翻译: 在含有至少一种聚合催化剂(A)的催化剂体系存在下进行的乙烯均相或共聚的多级方法,所述催化剂体系基于具有三齿配体的后过渡金属组分,其具有至少两个邻位二取代的芳基 自由基,至少一种齐格勒聚合催化剂(B)和至少一种路易斯酸活化化合物(C),其中活化化合物(C)的金属与催化剂(A)的后过渡金属的摩尔比是不同的 在两个聚合步骤中。 催化剂(A)和(B)可以通过改变活化化合物(C)的量来选择性地控制。

    Polyethylene and catalyst composition for its preparation
    74.
    发明申请
    Polyethylene and catalyst composition for its preparation 有权
    聚乙烯和催化剂组合物的制备

    公开(公告)号:US20100311925A1

    公开(公告)日:2010-12-09

    申请号:US12800998

    申请日:2010-05-27

    申请人: Shahram Mihan

    发明人: Shahram Mihan

    摘要: Polyethylene which comprises ethylene homopolymers and copolymers of ethylene with α-olefins and has a molar mass distribution width Mw/Mn of from 6 to 100, a density of from 0.89 to 0.97 g/cm3, a weight average molar mass Mw of from 5000 g/mol to 700 000 g/mol and has from 0.01 to 20 branches/1000 carbon atoms and at least 0.5 vinyl groups/1000 carbon atoms, wherein the 5-50% by weight of the polyethylene having the lowest molar masses have a degree of branching of less than 10 branches/1000 carbon atoms and the 5-50% by weight of the polyethylene having the highest molar masses have a degree of branching of more than 2 branches/1000 carbon atoms, a process for its preparation, catalysts suitable for its preparation and also fibers, moldings, films or polymer blends in which this polyethylene is present.

    摘要翻译: 聚乙烯,其包含乙烯均聚物和乙烯与α-烯烃的共聚物,其摩尔质量分布宽度Mw / Mn为6至100,密度为0.89至0.97g / cm 3,重均摩尔质量Mw为5000g / mol至700000g / mol,具有0.01至20个支链/ 1000个碳原子和至少0.5个乙烯基/ 1000个碳原子,其中5-50重量%的具有最低摩尔质量的聚乙烯具有 小于10个支链/ 1000个碳原子的支链和5-50重量%的具有最高摩尔质量的聚乙烯具有多于2个分支/ 1000个碳原子的支化度,其制备方法,适用于 其制备方法以及其中存在该聚乙烯的纤维,模制品,膜或聚合物共混物。

    Process for preparing a chromium-based catalyst for the polymerization and/or copolymerization of olefins
    77.
    发明授权
    Process for preparing a chromium-based catalyst for the polymerization and/or copolymerization of olefins 有权
    制备用于烯烃聚合和/或共聚的铬基催化剂的方法

    公开(公告)号:US07705097B2

    公开(公告)日:2010-04-27

    申请号:US11628827

    申请日:2005-06-09

    摘要: Process for preparing a supported catalyst for the polymerization and/or copolymerization of olefins which has a chromium content of from 0.01 to 5% by weight, based on the element, which comprises (a) preparing a homogeneous solution comprising an organic or inorganic chromium compound and at least one further organic or inorganic compound of elements selected from among Mg, Ca, Sr, B, Al, Si, P, Bi, Sc, V, Mn, Fe, Co, Ni, Cu, Zn, Zr, Nb, Mo, Ru, Rh, Pd, Hf, Ta, W in a protic or aprotic polar solvent, (b) bringing the solution from a) into contact with a finely divided inorganic support to form a catalyst precursor, (c) if appropriate, removing the solvent from the catalyst precursor and (d) calcining the catalyst precursor at temperatures of from 350 to 950° C., preferably 400 to 900° C., under oxidative conditions.

    摘要翻译: 制备用于烯烃聚合和/或共聚的负载催化剂的方法,该催化剂的铬含量为0.01至5重量%,基于该元素,其包括(a)制备包含有机或无机铬化合物的均匀溶液 以及选自Mg,Ca,Sr,B,Al,Si,P,Bi,Sc,V,Mn,Fe,Co,Ni,Cu,Zn,Zr,Nb中的至少一种有机或无机化合物, Mo,Ru,Rh,Pd,Hf,Ta,W在质子或非质子极性溶剂中,(b)使来自a)的溶液与细碎的无机载体接触以形成催化剂前体,(c) 从催化剂前体中除去溶剂,和(d)在氧化条件下,在350-950℃,优选400-900℃的温度下煅烧催化剂前体。

    Monocyclopentadienyl complexes
    79.
    发明授权
    Monocyclopentadienyl complexes 失效
    单环戊二烯基络合物

    公开(公告)号:US07629464B2

    公开(公告)日:2009-12-08

    申请号:US10583575

    申请日:2004-12-15

    IPC分类号: C07F17/00 B01J31/00

    摘要: Monocyclopentadienyl complexes in which the cyclopentadienyl system is substituted by at least one bridged donor, where the bridge contains at least one atom of group 14 of the Periodic Table and at least one atom of group 15 or 16 of the Periodic Table, and a catalyst system comprising at least one of the monocyclopentadienyl complexes, and also methods of preparing them, the use of the catalyst system for the polymerization or copolymerization of olefins and a process for preparing polyolefins by polymerization or copolymerization of olefins in the presence of the catalyst system and the preparation of the associated cyclopentadienyl system.

    摘要翻译: 其中环戊二烯基体系被至少一个桥连供体取代的单环戊二烯基络合物,其中桥包含周期表中第14族的至少一个原子和周期表的第15或16族的至少一个原子和催化剂体系 包括至少一种单环戊二烯基配合物,以及制备它们的方法,使用催化剂体系用于烯烃的聚合或共聚,以及在催化剂体系存在下通过烯烃聚合或共聚制备聚烯烃的方法, 制备相关的环戊二烯体系。