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Catalysts 2013, 3(1), 157-175; doi:10.3390/catal3010157
Review

Half-Titanocenes Containing Anionic Ancillary Donor Ligands: Effective Catalyst Precursors for Ethylene/Styrene Copolymerization

Department of Chemistry, Tokyo Metropolitan University, 1-1 Minami Osawa, Hachioji, Tokyo 192-0397, Japan
Received: 25 December 2012 / Revised: 21 January 2013 / Accepted: 25 January 2013 / Published: 18 February 2013
(This article belongs to the Special Issue Molecular Catalysis for Precise Olefin Polymerization)
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Abstract

This review summarizes recent results for ethylene/styrene copolymerization using half-titanocenes containing anionic donor ligands, Cp’TiX2(Y) (X = halogen, alkyl; Y = aryloxo, ketimide etc.)–cocatalyst systems. The product composition, the styrene incorporation and microstructures in the resultant copolymers are highly influenced by the anionic donor employed. A methodology for an exclusive synthesis of the copolymers even under high temperature and high styrene concentrations has been introduced on the basis of a proposed catalytically-active species in this catalysis.
Keywords: polymerization; ethylene; styrene; copolymerization; titanium; catalyst; polymerization mechanism; homogeneous catalysis polymerization; ethylene; styrene; copolymerization; titanium; catalyst; polymerization mechanism; homogeneous catalysis
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).
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Nomura, K. Half-Titanocenes Containing Anionic Ancillary Donor Ligands: Effective Catalyst Precursors for Ethylene/Styrene Copolymerization. Catalysts 2013, 3, 157-175.

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