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Polymerization of ethylene using metallocene and aluminoxane systems

✍ Scribed by Justino, Jorge; Dias, A. Romão; Ascenso, José; Marques, Maria M.; Tait, Peter J. T.

Publisher
John Wiley and Sons
Year
1997
Tongue
English
Weight
251 KB
Volume
44
Category
Article
ISSN
0959-8103

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✦ Synopsis

This paper describes ethylene polymerization using a number of metallocene and aluminoxane catalyst systems, and methylaluminoxane Cp 2 MR 2 [M \ Zr, W, Nb ; R \ Cl, Two types of methylaluminoxane, MAO (1) CH 3 ]. and MAO (2), were used as cocatalysts. The polymerization activities of the complexes and were Cp 2 WCl 2 Cp 2 NbCl 2 compared with that of

The Nb and W complexes were found to be Cp 2 ZrCl 2 . less active than the Zr complex. Polyethylene characterization was also carried out by the following methods : gel permeation chromatography (GPC), di †erential scanning calorimetry (DSC) and nuclear magnetic resonance (NMR).

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