rac-[Ethylenebis(2-(thexyldimethylsiloxy)indenyl)]zirconium dichloride: synthesis, molecular structure and olefin polymerization catalysis
作者:Reko Leino、Hendrik J.G Luttikhedde、Petri Lehmus、Carl-Eric Wilén、Rainer Sjöholm、Ari Lehtonen、Jukka V Seppälä、Jan H Näsman
DOI:10.1016/s0022-328x(98)00405-7
日期:1998.5
The synthesis and molecular structure of rac-[ethylenebis(2-(thexyldimethylsiloxy)indenyl)]zirconiumdichloride (4), is reported. In combination with methylaluminoxane (MAO), 4 forms an active catalyst system for homogeneous polymerization of ethylene and propylene. The high activity of 4/MAO is retained at low [Al]:[Zr] ratios [(150–250):1]. Decreasing polymerization temperature or the [Al]:[Zr] ratio