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Russian Chemical Bulletin

, Volume 67, Issue 2, pp 377–381 | Cite as

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

  • V. A. Tuskaev
  • S. Ch. Gagieva
  • D. A. Kurmaev
  • I. V. Fedyanin
  • S. V. Zubkevich
  • B. M. BulychevEmail author
Brief Communications
  • 19 Downloads

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.

Key words

titanium(IV) coordination compounds ultra-high molecular weight polyethylene Ziegler—Natta catalysts cocatalyst tensile strength 

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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  • V. A. Tuskaev
    • 1
  • S. Ch. Gagieva
    • 1
  • D. A. Kurmaev
    • 1
  • I. V. Fedyanin
    • 2
  • S. V. Zubkevich
    • 1
  • B. M. Bulychev
    • 1
    Email author
  1. 1.Department of ChemistryM. V. Lomonosov Moscow State UniversityMoscowRussian Federation
  2. 2.A. N. Nesmeyanov Institute of Organoelement CompoundsRussian Academy of SciencesMoscowRussian Federation

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