Process for the preparation of polyolefins
    10.
    再颁专利
    Process for the preparation of polyolefins 有权
    制备聚烯烃的方法

    公开(公告)号:USRE39156E1

    公开(公告)日:2006-07-04

    申请号:US09488037

    申请日:2000-01-19

    IPC分类号: C07F17/00 C08F4/642 B01J31/00

    摘要: A process for the preparation of an olefin polymer by polymerization or copolymerization of an olefin of the formula Ra—CH═CH—Rb, in which Ra and Rb are identical or different and are a hydrogen atom or a hydrocarbon radical having 1 to 14 carbon atoms or Ra and Rb, together with the atoms connecting them, can form a ring, at a temperature of from −60° to 200° C., at a pressure of from 0.5 to 100 bar, in solution, in suspension or in the gas phase, in the presence of a catalyst formed from a metallocene in the meso-form or a meso:rac mixture, with meso:rac>1:99, as transition-metal compound and a cocatalyst, wherein the metallocene is a compound of the formula I, in which M1 is Zr or Hf, R1 and R2 are identical or different and are methyl or chlorine, R3 and R6 are identical or different and are methyl, isopropyl, phenyl, ethyl or trifluoromethyl, R4 and R5 are hydrogen or as defined for R3 and R6, or R4 forms an aliphatic or aromatic ring with R6, or adjacent radicals R4 form a ring of this type, and R7 is a radical, and m plus n is zero or 1.

    摘要翻译: 一种制备烯烃聚合物的方法,该方法是通过使式R a -O-CH-CH-R b的烯烃聚合或共聚制备烯烃聚合物,其中R a R 1和R 2彼此相同或不同,是氢原子或具有1至14个碳原子的烃基或R a a和R b, / SUP>与连接它们的原子一起可以在-60°至200℃的温度下,在0.5至100巴的压力下,在溶液中,悬浮液中或在气相中形成环 在由外消旋混合物中内消旋的茂金属形成的催化剂存在下,外消旋体>外消旋体> 1:99,作为过渡金属化合物和助催化剂,其中金属茂是式 I,其中M 1是Zr或Hf,R 1和R 2相同或不同,是甲基或氯,R SUP > 3和R 6相同或不同,为甲基,异丙基,苯基,乙基或三氟甲基,R 4和 R 5是氢或根据R 3和R 6定义,R 6或R 4还可以是脂族或芳族的 与R 6相连,或相邻基团R 4形成这种环,R 7是一个基团,m + n是 零或1。