First example of cationic titanium (III) complexes with crown ether as catalysts for ethylene polymerization

Complex cations with a vacant coordination site are considered as the most plausible catalytically active centers of metallocene and post-metallocene polymerization catalysts. For the first time we demonstrated that cationic titanium (III) complexes stabilized with crown ether can be used as pre-catalysts for ethylene polymerization. In the presence of alkyl aluminum chlorides and MgBu2 as cocatalysts, these complexes catalyze ethylene polymerization to produce Ultra High Molecular Weight Polyethylene (UHMWPE) with productivity up to 4650 kgPE/mol Ti h⋅atm and molecular weight up to 1.8·106 Da. UHMWPE powders were processed by the solid-phase method with subsequent orientation drawing into high-strength (1.4–2.1 GPa) and high-modulus (91–118 GPa) films. © 2022 Elsevier Ltd

Authors
Ch. Gagieva S. , Kurmaev D.A.1 , Tuskaev V.A.1, 2 , Khrustalev V.N. 3, 4 , Churakov A.V.5 , Golubev E.K. 6 , Sizov A.I.1 , Zvukova T.M.1 , Buzin M.I.2 , Nikiforova G.G.2 , Evseeva M.D.1 , Bulychev B.M.1
Journal
European Polymer Journal
Publisher
Elsevier Ltd
Language
English
Status
Published
Link
External link
DOI
10.1016/j.eurpolymj.2022.111166
Number
111166
Volume
170
Year
2022
Organizations
  • 1 Department of Chemistry, M. V. Lomonosov Moscow State University, 1 Leninskie Gory, Moscow, 119992, Russian Federation
  • 2 A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilova St. 28, Moscow, 119991, Russian Federation
  • 3 Peoples’ Friendship, University of Russia (RUDN University), Miklukho-Maklay St. 6, Moscow, 117198, Russian Federation
  • 4 Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospekt 47, Moscow, 119991, Russian Federation
  • 5 Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, Moscow, 119991, Russian Federation
  • 6 Enikolopov Institute of Synthetic Polymer Materials, Russian Academy of Sciences, Profsoyuznaya Str., 70, Moscow, 117393, Russian Federation
Keywords
Catalysts; Titanium(III) and (IV) complexes; Ultra-high molecular weight polyethylene; Ziegler-Natta polymerization
Date of creation
06.07.2022
Date of change
06.07.2022
Short link
https://repository.rudn.ru/en/records/article/record/83620/
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