Summary
The living carbocationic polymerization of isobutylene initiated by 1,3,5-tris(2-methoxypropane) benzene (TriCumOMe)/BCl3 system was investigated by C13 and B11 NMR spectroscopy. The reaction between the TriCumOMe and BCl3 at-30°C in CH2Cl2 after 15 mins reaction time resulted in 1,3,5-tris(2-chloropropane) benzene (TriCumCl) and methyl-dichloroboronite (BCl2OMe). The same system in the presence of isobutylene yielded three-arm star, chlorine terminated telechelic polyisobutylene and BCl2OMe. No counterions, i.e., BCl3OMe⊝, BCl ⊝4 , or neutral boron complexes, e.g., TriCumOMe, 3BCl3 could be detected. The simultaneous measurement of static permittivity (direct monitoring method) showed different reaction rate patterns in the case of AMI method, and when the TriCumOMe+BCl3 mixture was aged and the polymerization was started by isobutylene.
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References
R. Faust and J.P. Kennedy, Polym. Bull.15, 317 (1986)
R. Faust and J.P. Kennedy, J. Polym. Sci., Polym. Chem.Ed.25 (A), 1847 (1987)
M.K. Mishra and J.P. Kennedy, J. Macromol. Sci., Chem.A 24 (8), 933 (1987)
G. Kaszás, J.E. Puskás, C.C. Chen and J.P. Kennedy, Polym. Bull.20, 413 (1988)
M.K. Mishra, B. Wang and J.P. Kennedy, Polym. Bull.17, 307 (1987)
I. Majoros, L. Sipos, L. Balogh and T. Kelen, to be published
L. Balogh, L. Fábián, I. Majoros and T. Kelen, Polym. Bull. the next paper in this issue
H. Nöth and H. Vahrenkamp, Chem. Ber.99 1049 (1966)
L. Toman, S. Pokorny, J. Spevacek and J. Oanhelka, Polymer27, 1121 (1986)
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Zsuga, M., Balogh, L., Kelen, T. et al. Investigation of 1,3,5-tris(2-metoxypropane)benzene/BCl3 initiated living isobutylene polymerization by C13 and B11 NMR spectroscopy. Polymer Bulletin 23, 335–340 (1990). https://doi.org/10.1007/BF01032450
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DOI: https://doi.org/10.1007/BF01032450