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New titanium(IV) coordination compounds with 2-hydroxybenzyl alcohol derivatives used in the preparation of ultra-high molecular weight polyethylene

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Abstract

A reaction of 2,4-bis(α,α-dimethylbenzyl)phenol with TiCl2(ОPri)2 and Ti(ОPri)4 was used to obtain the coordination compounds (HL)2L2Ti2Cl2•MeC6H5 and L4Ti4(OPri)8, respectively. The compounds were characterized by elemental analysis, NMR spectroscopy, and X-ray diffraction. The titanium(IV) coordination compounds obtained polymerize ethylene in the presence of binary cocatalysts {3Et2AlCl + Bu2Mg} or {3Et3Al2Cl3 + Bu2Mg} at moderate to high rates, giving rise to ultra-high molecular weight polyethylene with a wide range of molecular masses. The highest values of tensile strength (2.4 GPa) and modulus of elasticity (ε = 2.67%) were obtained for the sample with a molecular mass of 3.14•106 Da under comparable conditions of orientation drawing of the film filaments. This sample was obtained when complex (HL)2L2Ti2Cl2 was activated by a 3: 1 mixture of Et2AlCl—Bu2Mg.

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Authors and Affiliations

  1. Department of Chemistry, M. V. Lomonosov Moscow State University, Build. 3, 1 Leninskie Gory, 119991, Moscow, Russian Federation

    V. A. Tuskaev, S. Ch. Gagieva, D. A. Kurmaev, S. V. Zubkevich & B. M. Bulychev

  2. A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 ul. Vavilova, 119991, Moscow, Russian Federation

    I. V. Fedyanin

Authors
  1. V. A. Tuskaev
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  2. S. Ch. Gagieva
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  3. D. A. Kurmaev
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  4. I. V. Fedyanin
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  5. S. V. Zubkevich
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  6. B. M. Bulychev
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Correspondence to B. M. Bulychev.

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Tuskaev, V.A., Gagieva, S.C., Kurmaev, D.A. et al. New titanium(IV) coordination compounds with 2-hydroxybenzyl alcohol derivatives used in the preparation of ultra-high molecular weight polyethylene. Russ Chem Bull 67, 377–381 (2018). https://doi.org/10.1007/s11172-018-2084-9

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  • DOI: https://doi.org/10.1007/s11172-018-2084-9

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