Ethylene polymerization using catalysts based on binuclear phenoxyimine titanium halide complexes

Ethylene polymerization using catalysts based on binuclear phenoxyimine titanium halide complexes Full article

Journal

European Polymer Journal
ISSN: 0014-3057 , E-ISSN: 1873-1945

Output data

Year: 2012, Volume: 48, Number: 1, Pages: 191-199 Pages count : DOI: 10.1016/j.eurpolymj.2011.10.020

Tags

Ethylene polymerization; Phenoxy-imine catalysts; Binuclear titanium complexes; Catalytic activity; Thermal stability

Authors

Ivanchev Sergey ¹ , Yakimansky Alexander V. ² , Ivancheva Neonila I. ¹ , Oleinik Ivan I. ³ , Tolstikov Genrikh A. ³

Affiliations

1	(Данные Web of science) Russian Acad Sci, St Petersburg Filial Inst Catalysis, Siberian Branch, St Petersburg 191198, Russia
2	(Данные Web of science) Russian Acad Sci, Inst Macromol Cpds, St Petersburg 199004, Russia
3	(Данные Web of science) Russian Acad Sci, Vorozhtzov Inst Organ Chem, Siberian Branch, Novosibirsk 630090, Russia

Nine new binuclear titanium halide complexes were obtained on the basis of first synthesized tetradentate bis-phenoxyimine ligand precursors with different bridge linkages, including sterically hindered ones, between imine groups. Their binuclear character is confirmed by molecular weights, measured using vapor phase osmometry, MALDI-ToF and diffusion coefficients as determined by NMR-DOSY method. Catalytic activities of catalytic systems on the basis of the binuclear bis-salicylaldimine titanium complexes in ethylene polymerization were investigated. The studied catalytic systems appeared to be rather highly active, (10-70 kg(PE)/[mmol(Ti).MPa.h]) and considerably more thermostable as compared to mononuclear analogs and made it possible to obtain polyethylenes of high and superhigh molecular weights. The effects of the bridge linkage between imine nitrogens and o-, p-substituents in the phenoxy-group were established. (C) 2011 Elsevier Ltd. All rights reserved.

Ivanchev S. , Yakimansky A.V. , Ivancheva N.I. , Oleinik I.I. , Tolstikov G.A.
Ethylene polymerization using catalysts based on binuclear phenoxyimine titanium halide complexes
European Polymer Journal. 2012. V.48. N1. P.191-199. DOI: 10.1016/j.eurpolymj.2011.10.020 WOS Scopus

Published print:

Jan 1, 2012

Web of science	WOS:000300078700020
Scopus	2-s2.0-84155165449
OpenAlex	W2009727702