Abstract: The kinetic features of ethylene polymerization with six methylaluminoxane-activated bis(phenoxyimine) complexes of titanium chloride that are distinguished by the electronic properties of substituents in the phenoxy group are studied in the temperature range 30-80A degrees C and at an ethylene pressure of 0.3 MPa. It is shown that, in the presence of an electro-donor or electron-acceptor substituent in the phenoxy group, the catalytic systems under study exhibit high activity (up to similar to 700 t(PE) mol (cat) (-1) mol (ethylene) (-1) h(-1)) and form high-molecular-mass PE samples (M (eta) = (500-900) x 10(3)) with different molecular-mass distributions. In the case of titanium bis(phenoxyimine) complexes containing donor substituents at the para position of the phenoxy group, the polymerization of ethylene follows the living-chain mechanism, while the introduction of acceptor substituents diminishes the contribution of this mechanism to the reaction.

Cite: Vasil'eva M.Y. , Fedorov S.P. , Nikolaev D.A. , Oleinik I.I. , Ivanchev S.S.
Polymerization of ethylene in the presence of bis(phenoxyimine) complexes of titanium chloride that contain various substituents in a phenoxy group
Polymer Science - Series B. 2010. V.52. N7-8. P.443-449. DOI: 10.1134/S1560090410070080 WOS Scopus РИНЦ OpenAlex

Dates:

Published print:	Aug 1, 2010
Published online:	Sep 3, 2010

Identifiers:

Web of science:	WOS:000281608900008
Scopus:	2-s2.0-78649562349
Elibrary:	16868301
OpenAlex:	W2077889024

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Scopus	1
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