HETEROGENEOUS DIMERIZATION OF ALPHA-OLEFINS WITH ACTIVATED METALLOCENE COMPLEXES
申请人:Englmann Tanja
公开号:US20110004036A1
公开(公告)日:2011-01-06
Methods for dimerizing alpha-olefins utilizing immobilized buffered catalysts wherein the catalytic component is of the form (ligand)
2
-M-X
2
where X is a halogen, M is selected from the group of Ti, Zr, and Hf and ligand is selected from the group consisting of cyclopentadienyl, substituted cyclopentadienyl, indenyl, and substituted indenyl, wherein the two ligands may be the same or different compound are provided.
CH-Aktivierungsreaktionen an unverbrückten und verbrückten Zirconocenkomplexen zur Darstellung von Metallacyclen und deren Verwendung in der katalytischen Ethylenpolymerisation
作者:Andrea I Licht、Katharina J Schneider、Helmut G Alt
DOI:10.1016/j.jorganchem.2003.08.045
日期:2003.12
metallacyclic zirconocene complexes. In this reaction aromatic CH bonds can be activated in unbridged and bridged metallocenedichloride complexes even if the corresponding phenyl ringscontain halogen substituents such as fluorine or chlorine. After the activation with methylalumoxane (MAO), all the metallocene complexes prove as attractive catalysts for ethylene polymerization reactions. Because of their Lewis