[ONNO]-type amine bis(phenolate)-based vanadium catalysts for ethylene homo- and copolymerization

Lorber, Christian

doi:10.1351/PAC-CON-08-08-05

Pure Appl. Chem., 2009, Vol. 81, No. 7, pp. 1205-1215

http://dx.doi.org/10.1351/PAC-CON-08-08-05

Published online 2009-06-29

[ONNO]-type amine bis(phenolate)-based vanadium catalysts for ethylene homo- and copolymerization

Christian Lorber*

a) CNRS, LCC (Laboratoire de Chimie de Coordination), 205 route de Narbonne, F-31077 Toulouse; b) Université de Toulouse, UPS, INPT, LCC, F-31077 Toulouse, France

Abstract: The synthesis and solution and solid-state structural characterization of a family of amine bis(phenolate) [ONNO]-vanadium complexes is reviewed. These compounds have oxidation states ranging from vanadium(II) to vanadium(V), and were evaluated as olefin polymerization catalysts. In association with EtAlCl₂ cocatalyst, we studied the homopolymerization of ethylene, propene, and 1-hexene, as well as the copolymerization of ethylene with α-olefins (1-hexene, 1-octene) and cycloolefins (norbornene, cyclopentene). Some of these catalysts were shown to produce copolymers with a good activity and comonomer content.