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    Metallocene compounds, process for their preparation, and their use in catalysts for the polymerization of olefins
    7.
    发明授权
    Metallocene compounds, process for their preparation, and their use in catalysts for the polymerization of olefins 失效
    茂金属化合物，其制备方法及其在烯烃聚合催化剂中的应用

    公开(公告)号：US06051728A

    公开(公告)日：2000-04-18

    申请号：US599483

    申请日：1996-01-23

    申请人： Luigi Resconi ,  Fabrizio Piemontesi ,  Ilya E. Nifant'ev ,  Pavel V. Ivchenko

    发明人： Luigi Resconi ,  Fabrizio Piemontesi ,  Ilya E. Nifant'ev ,  Pavel V. Ivchenko

    IPC分类号： C07F7/00 ,  C07F17/00 ,  C08F4/642 ,  C08F4/659 ,  C08F4/6592 ,  C08F10/00 ,  C08F10/06 ,  C08F110/06 ,  C08F210/06 ,  C07F9/00 ,  C07F11/00

    CPC分类号： C08F10/06 ,  C07F17/00 ,  C08F10/00 ,  C08F110/06 ,  C08F210/06 ,  C08F4/65912 ,  C08F4/65927 ,  Y10S526/943

    摘要： A class of metallocene compounds having two substituted cyclopentadienyl rings bridged by an alkylidene group wherein the cyclopentadienyl groups can be indenyl groups. The metallocene compounds have the following structures: ##STR1## The metallocenes are characterized by three principal features: (i) the cyclopentadienyl groups are substituted at the 3-position with a substituent other than hydrogen, while R.sup.2 in the 2-position bears a hydrogen (formula (I)) or is part of a condensed benzene ring (formula (II)); (ii) the bridge is a substituted-methylene bridge, i.e. a methylene group bearing at least one substituent other than hydrogen (R.sup.6 is always different from hydrogen); and (iii) the cyclopentadienyl groups are identically substituted (page 2, line 23). These metallocene compounds can be suitably used as catalyst components for the polymerization of olefins. In particular, by polymerizing propylene in the presence of a catalyst based on these metallocene compounds, polymers having very high isotactic indexes, high molecular weights, and narrow molecular weight distributions can be obtained in high yields. A process for preparing the metallocenes from the corresponding organic ligands is also disclosed.

    摘要翻译： 一类具有由亚烷基桥连的取代环戊二烯基环的茂金属化合物，其中环戊二烯基可以是茚基。 茂金属化合物具有以下结构：金属茂的特征在于三个主要特征：（i）环戊二烯基在3位被氢以外的取代基取代，而2-位的R2带有氢（式（式 I））或是稠合苯环的一部分（式（II））; （ii）桥是取代的亚甲基桥，即具有除氢之外的至少一个取代基的亚甲基（R6总是不同于氢）; 和（iii）环戊二烯基相同取代（第2页，第23行）。 这些茂金属化合物可以适合用作烯烃聚合的催化剂组分。 特别地，通过在基于这些茂金属化合物的催化剂的存在下聚合丙烯，可以高产率获得具有非常高的全同立构指数，高分子量和窄分子量分布的聚合物。 还公开了从相应的有机配体制备金属茂的方法。