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

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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References

  1. 1.

    R. W. Rendell, K. L. Ngai, G. B. McKenna, Macromole-cules, 1987, 20, 2250.

  2. 2.

    A. N. Ozerin, S. S. Ivanchev, S. N. Chvalun, V. A. Aulov, N. I. Ivancheva, N. F. Bakeev, Polym. Sci. Ser. A, 2012, 54, 950.

  3. 3.

    S. Ch. Gagieva, V. A. Tuskaev, I. V. Fedyanin, A. I. Sizov, E. S. Mikhaylik, E. K. Golubev, B. M. Bulychev, Polyhedron, 2017, 122, 179.

  4. 4.

    S. Ch. Gagieva, V. A. Tuskaev, I. V. Fedyanin, M. I. Buzin, V. G. Vasil´ev, G. G. Nikiforova, E. S. Afanas´ev, S. V. Zubkevich, D. A. Kurmaev, N. A. Kolosov, E. S. Mikhaylik, E. K. Golubev, A. I. Sizov, B. M. Bulychev, J. Organomet. Chem., 2017, 828, 89.

  5. 5.

    I. Cepanec, H. Mikuldaš, V. Vinković, Synthetic Commun., 2001, 31, 2913.

  6. 6.

    Bruker SADABS, version 2008/1, Bruker AXS, Madison, Wisconsin, USA.

  7. 7.

    G. M. Sheldrick, Acta Cryst. C, 2015, 123, 3.

  8. 7a.

    S. M. Kurtz, in UHMWPE Handbook: Ultra-high Molecular Weight Polyethylene in Total Joint Replacement, Elsevier Academic Press, 2004.

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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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Key words

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