Both the rac-and meso-dinuclear ansa-zirconocene catalysts (-C 12 H 8 {[SiPh(Ind) 2 ]ZrCl 2 } 2 ) were prepared by a coupling reaction between 2 equiv of diindenylphenylchlorosilane (rac-and meso-isomers) and 1 equiv of p-dilithiobiphenyl in diethyl ether at ฯช80ยฐC, followed by a successive reaction
Ethylene Polymerization with Sila-Bridged Dinuclear Zirconocene Catalysts
โ Scribed by Gonglu Tian; Baiquan Wang; Shansheng Xu; Xiuzhong Zhou; Bo Liang; Liang Zhao; Fenglou Zou; Yang Li
- Publisher
- John Wiley and Sons
- Year
- 2002
- Tongue
- English
- Weight
- 106 KB
- Volume
- 203
- Category
- Article
- ISSN
- 1022-1352
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The use of crosslinked poly(styrene-co-4-vinylpyridine) having functional groups as the support for zirconocene catalysts in ethylene polymerization was studied. Several factors affecting the activity of the catalysts were examined. Conditions like time, temperature, Al/N (molar ratio), Al/Zr (molar
## Abstract In the presence of methylaluminoxane (MAO), ethylene polymerization was successfully performed with homobinuclear zirconocene complexes {[(C~5~H~5~)ZrCl~2~](C~5~H~4~CH~2~ C~6~H~4~CH~2~C~5~H~4~)[(C~5~H~5~)ZrCl~2~]; 3o, 4m, and 5p}, which were prepared conveniently by the reaction of diso