Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1400186 | European Polymer Journal | 2007 | 6 Pages |
Abstract
The substituted β-ketoiminato palladium(II) complexes, Pd[CH3C(O)CHC(NAr)CH3](Pph3)(Me) (1 Ar = α-napthyl, 2 Ar = fluorenyl), can be prepared from the reaction of (COD)PdMeCl and Pph3 with the appropriate ligand. After activation of 1 and 2 with methylaluminoxane (MAO), the resulting palladium(II) complexes are used as catalysts for ethylene polymerization, yielding linear polyethylene. The effects of temperature, co-catalyst to catalyst molar ratio and polymerization time on catalyst activities are reported. The catalyst activity decreases above â20 °C due to catalyst deactivation and optimum co-catalyst to catalyst ratio is 300:1.
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Authors
LingYun Wang, Qing Wu,