Transition Metal Complex, Catalyst Composition Including the Same and Olefin Polymer Using Catalyst Composition
申请人:Lee Choong Hoon
公开号:US20070225158A1
公开(公告)日:2007-09-27
Provided are a novel transition metal complex where a monocyclopentadienyl ligand to which an amido group is introduced is coordinated, a catalyst composition including the same, and an olefin polymer using the catalyst composition.
The transition metal complex has a pentagon ring structure having an amido group connected by a phenylene bridge in which a stable bond is formed in the vicinity of a metal site, and thus, a sterically hindered monomer can easily approach the transition metal complex. By using a catalyst composition including the transition metal complex, a linear low density polyolefin copolymer having a high molecular weight and a very low density polyolefin copolymer having a density of 0.910 g/cc or less can be produced in a polymerization of monomers having large steric hindrance. Further, the reactivity for the olefin monomer having large steric hindrance is excellent.
提供了一种新型过渡金属配合物,其中包括一个含有氨基基团的单环戊二烯基配体,一个包括该配合物的催化剂组合物,以及使用该催化剂组合物的烯烃聚合物。该过渡金属配合物具有一个五边形环结构,其中通过苯基桥连接的氨基基团与金属位点附近形成稳定键,因此,立体位阻单体可以轻松接近该过渡金属配合物。通过使用包括该过渡金属配合物的催化剂组合物,在聚合具有较大立体位阻的单体时,可以生产具有高分子量的线性低密度聚烯烃共聚物和密度为0.910克/立方厘米或更低的超低密度聚烯烃共聚物。此外,对于具有较大立体位阻的烯烃单体,其反应性非常优秀。