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Electron donors in carbocationic polymerization

IV. Preparation of narrow-dispersitytert.-chlorine-capped polyisobutylene by thetrans-2,5-diacetoxy-2,5-dimethyl-3-hexene/BCl3/dimethyl sulfoxide system

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Summary

Low molecular weight (¯Mn ∼900–5000) narrow molecular weight distribution (MWD; ¯Mw/Mn = 1.1–1.2)tert.-chlorine telechelic polyisobutylenes (PIBs) have been synthesized by the use of thetrans-2,5-dimethyl-2,5-diacetoxy-3-hexene (DiOAcDMeH6)/BCl3 initiating system in the presence of the electron donor (ED) dimethyl sulfoxide (DMSO) in methyl chloride diluent at −30°C. The living character of the polymerization was demonstrated by linear Mn versus Wp (weight of polymer) plots starting at the origin with the slope of 1/[Io] (where [Io] = initiator concentration). DMSO reduces the overall rate of polymerization, however, it increases the initiator efficiency (Ieff) to ∼100%. The number averagetert.-chlorine end functionality is -Fn=1.97±0.04, by1H NMR spectroscopy. Polymerization mechanistic details are discussed. This is the first time narrow MWDtert.-chlorine telechelic PIB has been prepared close to the reflux temperature of methyl chloride.

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References

  1. R. Faust, A. Nagy and J. P. Kennedy, J. Macromol. Sci. Chem.,A24(6), 595 (1987)

    Google Scholar 

  2. M. Zsuga, J. P. Kennedy, T. Kelen, J. Macromol. Sci. Chem., in press

  3. G. Kaszas, J. Puskas, J. P. Kennedy, and C. C. Chen, Polym. Bull.20, 413 (1988)

    Google Scholar 

  4. G. Kaszas, J. Puskas and J. P. Kennedy, U.S. Patent Application

  5. R. Faust and J. P. Kennedy, J. Polym. Sci.,Part A, Polym. Chem.,25, 1847 (1987)

    Google Scholar 

  6. V. Guttmann, The Donor-Acceptor Approach to Molecular Interactions, Plenum Press, New York and London, 1978

    Google Scholar 

  7. G. Kaszas, J. Puskas and J. P. Kennedy, J. Macromol. Chem.13/14, 475 (1988)

    Google Scholar 

  8. G. Kaszas, J. Puskas, J. P. Kennedy and C. C. Chen, J. Macromol. Sci., Chem., in press

  9. S. Mah, R. Faust, M. Zsuga and J. P. Kennedy, Polym. Bull.18, 433 (1987)

    Google Scholar 

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Author notes

  1. Miklos Zsuga (Visiting Scientist)

    Present address: Department of Applied Chemistry, Kossuth Lajos University, H-4010, Debrecen, Hungary

Authors and Affiliations

  1. Institute of Polymer Science, University of Akron, 44325-3909, Akron, OH, USA

    Miklos Zsuga (Visiting Scientist) & J. P. Kennedy

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  1. Miklos Zsuga
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  2. J. P. Kennedy
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Additional information

Paper XXVII in the series on Living Carbocationic Polymerization. For paper XXVI see Kaszas et al., J. Macromol. Sci. Chem. to appear (1989)

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Zsuga, M., Kennedy, J.P. Electron donors in carbocationic polymerization. Polymer Bulletin 21, 5–12 (1989). https://doi.org/10.1007/BF00700261

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  • DOI: https://doi.org/10.1007/BF00700261

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