Polymerisation of ethylene catalysed by mono-imine-2,6-diacetylpyridine iron/methylaluminoxane (MAO) catalyst system: effect of the ligand on polymer microstructure
✍ Scribed by Susete Fernandes; Ronan M Bellabarba; Alejandro F G Ribeiro; Pedro T Gomes; José R Ascenso; João F Mano; Alberto R Dias; Maria M Marques
- Publisher
- John Wiley and Sons
- Year
- 2002
- Tongue
- English
- Weight
- 78 KB
- Volume
- 51
- Category
- Article
- ISSN
- 0959-8103
- DOI
- 10.1002/pi.1134
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✦ Synopsis
Abstract
The complex, {1‐{6‐[(2,6‐diisopropylphenyl)‐ethaneimidoyl]‐2‐pyridinyl}‐1‐ethanone}iron(II) dichloride (2), has been synthesised and characterised. Treatment of complex 2 with methylaluminoxane resulted in a very active catalytic system for the preparation of polyethylene (PE). The system shows activities in the order of magnitude 10^7^ g (PE) mol^−1^(Fe) h^−1^ bar^−1^. Characterisation by ^13^C NMR indicated that branched PE was obtained and that experimental conditions affect polymer microstructure. PE produced contained six to eight branches per 100 carbons.
© 2002 Society of Chemical Industry