Catalytic Polymerization of Ethylene in Aqueous Emulsion with a Simple in Situ Catalyst

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2003
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Bauers, Florian Martin
Chowdhry, Mubarik M.
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Macromolecules. 2003, 36(18), pp. 6711-6715. ISSN 0024-9297. eISSN 1520-5835. Available under: doi: 10.1021/ma034164m
Zusammenfassung

Catalytic polymerization of ethylene in aqueous emulsion by in situ catalysts based entirely on compounds commercially available from standard chemicals suppliers, namely a chlorinated derivative of 1,4-benzoquinone, triphenylphosphine, and bis(1,5-cyclooctadiene)nickel, is reported. Using miniemulsions of catalyst solutions in a small amount of hydrocarbon solvent for polymerization, stable dispersions of linear semicrystalline polyethylene are obtained. With 2,3,5,6-tetrachloro-1,4-benzoquinone as the quinone component, polyethylenes with molecular weights (Mn up to 3 X 1000 g mol-1) clearly exceeding the entanglement limit are accessible. The catalyst is stable in water for hours with productivities of up to 2 X 1000 mol(ethylene) mol(Ni)-1 h-1. Productivities and molecular weights are in the same range for conventional polymerization in organic solvents. Polyethylene dispersions with solids contents of up to 28% are obtained. Aqueous dispersions of ethylene/1-butene copolymers with comonomer incorporations of up to 3 mol % (6 wt %) were prepared.

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ISO 690BAUERS, Florian Martin, Mubarik M. CHOWDHRY, Stefan MECKING, 2003. Catalytic Polymerization of Ethylene in Aqueous Emulsion with a Simple in Situ Catalyst. In: Macromolecules. 2003, 36(18), pp. 6711-6715. ISSN 0024-9297. eISSN 1520-5835. Available under: doi: 10.1021/ma034164m
BibTex
@article{Bauers2003Catal-9640,
  year={2003},
  doi={10.1021/ma034164m},
  title={Catalytic Polymerization of Ethylene in Aqueous Emulsion with a Simple in Situ Catalyst},
  number={18},
  volume={36},
  issn={0024-9297},
  journal={Macromolecules},
  pages={6711--6715},
  author={Bauers, Florian Martin and Chowdhry, Mubarik M. and Mecking, Stefan}
}
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