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Titanium (IV) complexes supported by fluorine-containing [ON] and [ONNO]-types of ligands as catalysts for ethylene polymerizationстатья
Дата последнего поиска статьи во внешних источниках: 22 февраля 2019 г.
- Авторы: Tuskaev Vladislav A., Gagieva Svetlana Ch, Lysenko K.A., Bulychev Boris M.
- Журнал: Fluorine notes (Фторные заметки)
- Том: 116
- Номер: 1
- Год издания: 2018
- Первая страница: 5
- Последняя страница: 6
- DOI: 10.17677/fn20714807.2018.01.03
- Аннотация: A series of bi- and tetradentate chiral ligands - derivatives of diaryl prolinol, including compounds containing perfluorophenyl rings have been obtained. Novel titanium (IV) complexes were synthesized in high yields from deprotonated by butyllithium ligands and TiCl4. When activated by methylaluminoxane (MAO), complexes exhibited moderate activities (up to 370 kg / mol Ti h atm) toward ethylene polymerization. The introduction of perfluorophenyl moieties, in addition to increasing the activity, leads to an increase in the molecular weight of polyethylene up to the formation of an ultrahigh-molecular weight polymer (2.7-4.2 Da) with a melting point of 142-145 ° C.
- Добавил в систему: Гагиева Светлана Черменовна