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Polymer Bulletin
Erschienen in: Polymer Bulletin 8/2010

01.11.2010 | Original Paper

Polymerization of ethylene using a nickel α-diimine complex covalently supported on SiO2–MgCl2 bisupport

verfasst von: Hongliu Jiang, Jinshan Lu, Fajun Wang

Erschienen in: Polymer Bulletin | Ausgabe 8/2010

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Abstract

Bisupported catalyst for ethylene polymerization was prepared by mixing alcohol solution of MgCl2 with pretreated SiO2 in heptane, and further treating with bis(4-(4-amine-3,5-diisopropylbenzyl)-2,6-diisopropylphenylimino) acenaphtheneNiBr2 (abbreviated as NiLBr2) solution. The bisupported catalyst could be used to polymerize ethylene with high activity using alkylaluminum halides as inexpensive cocatalysts. According to high-temperature GPC, the weight-average molecular weights of the polymers obtained ranged from 2.15 × 105 to 9.27 × 105, with molecular weight distributions of 3.12–4.23. By adjusting the polymerization temperatures, the products with good morphologies could be obtained. The resultant polyethylenes were confirmed by 13C-NMR to contain significant amounts not only of methyl but also of ethyl, propyl, butyl, amyl, and longer side chains (longer than six carbons).
Vorheriger Artikel The effect of chain extenders structure on properties of new polyurethane elastomers
Nächster Artikel A novel effect of bis(6-heptenyl)zinc on the molecular weight and rheologic performance of polypropylene produced by rac-Me2Si[2-Me-4-Ph-Ind]2ZrCl2/MAO

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Metadaten
Titel
Polymerization of ethylene using a nickel α-diimine complex covalently supported on SiO2–MgCl2 bisupport
verfasst von
Hongliu Jiang
Jinshan Lu
Fajun Wang
Publikationsdatum
01.11.2010
Verlag
Springer-Verlag
Erschienen in
Polymer Bulletin / Ausgabe 8/2010
Print ISSN: 0170-0839
Elektronische ISSN: 1436-2449
DOI
https://doi.org/10.1007/s00289-010-0244-7

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