New Titanium(IV) Alkoxide Complexes Bearing Bidentate OO Ligand with the Camphyl Linker as catalysts for High Temper-ature Ethylene Polymerization and Ethylene/1-Octene Copoly-merization Reactions

Tuskaev, V.A.; Gagieva, S.C.; Kurmaev, D.A.; Nelyubina, Y.V.; Primakov, P.V.; Evseeva, M.D.; Golubev, E.K.; Buzin, M.I.; Nikiforova, G.G.; Dzhevakov, P.B.; Privalov, V.I.; Magomedov, K.F.; Bulychev, B.M.

Авторы: Tuskaev Vladislav A., Gagieva Svetlana Ch, Kurmaev Dmitrii A., Nelyubina Yulia V., Primakov Petr V., Evseeva Maria D., Golubev Evgenii K., Buzin Mikhail I., Nikiforova Galina G., Dzhevakov Pavel B., Privalov Viktor I., Magomedov Kasim F., Bulychev Boris M.
Журнал: Polymers
Том: 14
Год издания: 2022
Издательство: MDPI
Местоположение издательства: Basel, Switzerland
DOI: 10.3390/polym14214735
Аннотация: In order to increase the thermal stability of olefin polymerization precatalysts, a new titanium(IV) complexes with diolate ligand differing in the degree of steric hindrance have been synthesized from readily available precursor - ()camphor. Structure of complexes 1-2 were estab-lished by X-ray diffraction. Complexes 1–4 in the presence of an activator {EtnAlCl3-n + Bu2Mg} cata-lyze the synthesis of UHMWPE with Mv up to 10 million and productivity up to 3300 kg/molTi·atm·h. The obtained polymers are obviously characterized by a low density of macromolecular entangle-ment, which makes it possible to use the solid-phase method for their processing. Mechanical char-acteristics of oriented UHMWPE films - breaking strength up to 2.7 GPa and elastic modulus up to 151 GPa. The precatalysts 1-4 were also active in ethylene/1-octene copolymerization. The comono-mer content is in the range 1.4-4.6 mol%. The use of a rigid linker and an increase in the steric load of diolate complexes ensures the thermal stability of the catalytic system in the range of 50-70 °C.
Добавил в систему: Никифорова Галина Григорьевна

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Интеллектуальная Система Тематического Исследования НАукометрических данных

New Titanium(IV) Alkoxide Complexes Bearing Bidentate OO Ligand with the Camphyl Linker as catalysts for High Temper-ature Ethylene Polymerization and Ethylene/1-Octene Copoly-merization Reactionsстатья

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