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Chain termination reactions in the polymerization of ethylene over TiCl4-AIR2Cl

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Bulletin of the Academy of Sciences of the USSR, Division of chemical science Aims and scope

Summary

  1. 1.

    In the steady polymerization of ethylene in the presence of TiCl4-AlEt2Cl, the molecular weight of the polyethylene is independent of polymerization time.

  2. 2.

    Under these conditions, the length of the polymer chain with ethylene concentrations of the order of 10−2 mole/liter is determined by the ratio of the constants of polymer chain growth and termination by the monomer. The rate of chain termination by the catalyst components becomes commensurate with the rate of termination by the monomer only at lower ethylene concentrations. Spontaneous chain termination is practically absent.

  3. 3.

    A sharp increase in the molecular weight of the polyethylene with an increase in the molar ratios of the catalyst components results from a change in the kinetic properties of the catalytic complex (chain propagation constants and constants of chain termination and transfer on the monomer) and not from a fall in the rate of chain termination by TiCl4, as has been proposed in the papers of a number of investigators.

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Literature cited

  1. E. I. Badin, J. Amer. Chem. Soc.80, 6545 (1958).

    Google Scholar 

  2. K. Fukui, Tsutomu Kagija Bull. Chem. Soc. Japan35, 303 (1962).

    Google Scholar 

  3. E. P. Tepenitsyna and M. I. Farberov, Vysokomolek, soed.,1, 1148 (1959).

    Google Scholar 

  4. A. G. Pozamantir, A. A. Korotkov, and I. S. Lishanskii, Vysokomolek. soed.,3, 1769 (1961).

    Google Scholar 

  5. A. G. Pozamantir, Vysokomolek. soed.,2, 1026 (1960).

    Google Scholar 

  6. M. N. Berger and T. H. Boultbee, J. Appl. Chem.9, 490 (1959).

    Google Scholar 

  7. Gy. Gymes, A. Simon, and J. Andor, Monatsh. Chem.B91, 1 (1960).

    Google Scholar 

  8. I. N. Meshkova, G. M. Bakova, V. I. Tsvetkova, and N. M. Chirkov, Vysokomolek. soed.,3, 1516 (1961).

    Google Scholar 

  9. I. N. Meshkova, S. M. Kuman'kova, V. I. Tsvetkova, and N. M. Chirkov, Vysokomolek. soed.,3, 1816 (1961).

    Google Scholar 

  10. I. N. Meshkova, Go Shao-min', V. I. Tsvetkova, and N. M. Chirkov, Vysokomolek. soed., (in press).

  11. L. H. Tung, J. Polymer, Sci.20, 495 (1956).

    Google Scholar 

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Authors and Affiliations

  1. Institute of Chemical Physics, Academy of Sciences, USSR

    I. N. Meshkova, V. I. Tsvetkova & N. M. Chirkov

Authors
  1. I. N. Meshkova
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  2. V. I. Tsvetkova
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  3. N. M. Chirkov
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Additional information

Article published on the basis of a resolution of the Board of Editors-in-Chief of the Journals of the Academy of Sciences USSR dated July 12, 1962 as the dissertation work of I. N. Meshkova.

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Meshkova, I.N., Tsvetkova, V.I. & Chirkov, N.M. Chain termination reactions in the polymerization of ethylene over TiCl4-AIR2Cl. Russ Chem Bull 12, 732–737 (1963). https://doi.org/10.1007/BF01134715

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  • DOI: https://doi.org/10.1007/BF01134715

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