Immobilized on MgCl2 bis(phenoxy-imine) complexes of Ti and Zr as catalystsfor preparing UHMWPE and ethylene/higher α-olefin copolymers

Gagieva, S.C.; Tuskaev, V.A.; Magomedov, K.F.; Moskalenko, M.A.; Pavlov, A.A.; Meshchankina, M.Y.; Shcherbina, M.A.; Bulychev, B.M.

Авторы: Gagieva Svetlana Ch, Tuskaev Vladislav A., Magomedov Kasim F., Moskalenko Margarita A., Pavlov Alexander A., Meshchankina Marina Yu, Shcherbina Maxim A., Bulychev Boris M.
Журнал: Polymer Bulletin
Том: 79
Номер: 10
Год издания: 2022
Издательство: Springer Verlag
Местоположение издательства: Germany
Первая страница: 8333
Последняя страница: 8351
DOI: 10.1007/s00289-021-03885-6
Аннотация: A series of mono- and polynuclear bis(phenoxy-imine) titanium and zirconiumcomplexes was synthesized. The complexes were immobilized on an MgCl 2 carrierprepared by different methods. The homogeneous complexes and supported catalystswere evaluated for ethylene polymerization. The effects of the nuclearity of theprecatalysts, nature of organoaluminum activator, and the polymerization temperaturewere examined. It has been shown that immobilized on MgCl 2 catalysts are superiorin activity to homogeneous precatalysts by the level of activity (up to 6.1 ton of PE (molM h atm) −1 ). The precatalysts obtained in situ by the interaction of FI complexes,Bu 2 Mg, and Et 2 AlCl are suitable for preparing ultra-high molecular weightpolyethylene (UHMWPE) with molecular weight up to 610 6 Da even at elevatedreaction temperatures. In addition, supported precatalysts, in the presence of MAO,effectively catalyze the ethylene – higher olefin copolymerization (activity – up to 8.2ton of copolymer (mol M ⋅ h ⋅ atm) −1 ).
Добавил в систему: Гагиева Светлана Черменовна

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Immobilized on MgCl2 bis(phenoxy-imine) complexes of Ti and Zr as catalystsfor preparing UHMWPE and ethylene/higher α-olefin copolymersстатья Исследовательская статья

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