Metallocene catalysts for olefin polymerization and methog of polymerizing olefins using the metallocene catalysts
申请人:Samsung General Chemicals Co., Ltd.
公开号:EP2174963A2
公开(公告)日:2010-04-14
The new metallocene catalysts according to the present invention are prepared by reacting a metallocene compound with a compound having at least two functional groups. The metallocene compound is a transition metal compound, which is coordinated with a main ligand such as cyclopentadienyl group, and an ancillary ligand. The functional groups in the compound are selected from the group consisting of a hydroxyl group, an alkyl or aryl magnesium halide, a thiol group, a primary amine group, a secondary amine group, a primary phosphorous group, a secondary phosphorous group, etc. The metallocene catalysts according to the present invention have a structure in which an ancillary ligand of a metallocene compound is bonded to the functional groups of a compound having at least two functional groups. A structure of the metallocene catalysts can be varied with the type of a metallocene compound and a compound having at least two functional groups, and the molar ratio of each reactant. The metallocene catalysts are employed with a co-catalyst for olefin polymerization. The co-catalyst is an organometallic compound, or a mixture of non-coordinated Lewis acid and alkyl aluminium as it is well known in the art.
本发明的新型茂金属催化剂是通过茂金属化合物与至少具有两个官能团的化合物反应制备的。茂金属化合物是一种过渡金属化合物,它与一种主配体(如环戊二烯基)和一种辅助配体配位。化合物中的官能团选自羟基、烷基或芳基卤化镁、硫醇基、伯胺基、仲胺基、伯磷基、仲磷基等组成的组。根据本发明的茂金属催化剂具有一种结构,其中茂金属化合物的辅助配体与具有至少两个官能团的化合物的官能团键合。茂金属催化剂的结构可以随茂金属化合物和至少具有两个官能团的化合物的类型以及各反应物的摩尔比而变化。茂金属催化剂与助催化剂一起用于烯烃聚合。助催化剂是一种有机金属化合物,或者是非配位路易斯酸和烷基铝的混合物,这在本领域是众所周知的。