知搜-全球专利检索

  1. 登录
  2. 注册

搜索结果

7 条记录 (耗时 0.018 秒)

    Polymers from ionic metallocene catalyst compositions
    4.
    发明授权
    Polymers from ionic metallocene catalyst compositions 失效
    离子金属茂催化剂组合物的聚合物

    公开(公告)号：US06232420B1

    公开(公告)日：2001-05-15

    申请号：US09222971

    申请日：1998-12-30

    申请人： Howard W. Turner

    发明人： Howard W. Turner

    IPC分类号： C08F1006

    CPC分类号： C08F10/00 ,  C07F17/00 ,  C08F4/65925 ,  C08F4/65927 ,  C08F110/02 ,  C08F110/06 ,  C08F210/06 ,  C08F210/16 ,  C08F210/18 ,  Y10S526/943 ,  C08F4/65908 ,  C08F4/76 ,  C08F4/6432 ,  C08F238/02 ,  C08F2500/03 ,  C08F210/08 ,  C08F210/14 ,  C08F236/20 ,  C08F210/02 ,  C08F4/65922

    摘要： Ionic catalyst compositions can be prepared by combining two components. The first component is a bis(cyclopentadienyl) Group IV-B metal complex containing at least one ligand which will combine irreversibly with the second component or at least a portion thereof such as a cation portion thereof. The second component comprises a cation which will irrevesibly react with at least one ligand on the Group IV-B metal complex and a non-coordinating anion. The combination of the two components produces an ionic catalyst composition comprising a cationic bis(cyclopentadienyl) Group IV-B metal complex which has a formal coordination number of 3 and a 4+ valence charge and the aforementioned non-coordinating anion. The anion is (i) labile and can be displaced by an olefin, diolefin or acetylenically unsaturated monomer; (ii) has a molecular diameter about or greater than 4 angstroms; (iii) forms stable salts with reducible Lewis acids and protonated Lewis bases; (iv) has a negative charge delocalized over the framework on the anion or within the core thereof; (v) is not a reducing or oxidizing agent; and (vi) is a relatively poor nucleophile. These ionic catalyst compositions can be used to polymerize &agr;-olefins, diolefins and/or acetylenically unsaturated monomers, either alone or in combination, to polymers and copolymers.

    摘要翻译： 离子催化剂组合物可以通过组合两种组分来制备。 第一组分是含有至少一种将不可逆地与第二组分或其至少一部分如其阳离子部分结合的配体的双（环戊二烯基）Ⅳ-B族金属络合物。 第二组分包含与IV-B族金属络合物和非配位阴离子上的至少一种配体不可逆地反应的阳离子。 两种组分的组合产生离子催化剂组合物，其包含阳离子双（环戊二烯基）IV-B族金属络合物，其形式配位数为3，4+价电荷和上述非配位阴离子。 阴离子是（i）不稳定并且可以被烯烃，二烯烃或炔属不饱和单体置换; （ii）具有大约或大于4埃的分子直径; （iii）与可还原的路易斯酸和质子化的路易斯碱形成稳定的盐; （iv）在阴离子或其核心中的骨架上具有负电荷离域; （v）不是还原或氧化剂; 和（vi）是相对较差的亲核试剂。 这些离子催化剂组合物可用于将α-烯烃，二烯烃和/或炔属不饱和单体单独或组合聚合到聚合物和共聚物中。