Ethylene Polymerizations with Unsymmetrical (α-Diimine)nickel(II) Catalysts
نویسندگان
چکیده
منابع مشابه
New catalysts with unsymmetrical N-heterocyclic carbene ligands.
The importance of unsymmetrical N-heterocyclic carbenes (uNHCs) as ligands in metal-catalyzed reactions is undeniable. While uNHCs show similar properties as compared with symmetrical NHCs, dissymmetrization allows for further fine-tuning. The introduction of chelatization, hemilability, bifunctionality, shielding effects, and chirality-transfer influences the catalyst's stability, reactivity, ...
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Bis(2-R-ind)ZrCl2 (R: H or phenyl) was supported on different types of silica by in situ impregnation method and used for ethylene polymerization. In this method, the step of catalyst loading on support was eliminated and common alkyl aluminum (triisobutylaluminum, TiBA) cocatalyst was used instead of expensive methyl aluminiumoxane (MAO) cocatalyst in the polymerization. The effect of surface ...
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ژورنال
عنوان ژورنال: Polymer Journal
سال: 2008
ISSN: 0032-3896,1349-0540
DOI: 10.1295/polymj.pj2007175