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Cationic polymerization of hydrocarbon monomers under the effect of complexes of acyl halides with Lewis acids

1. Initiation of polymerization of isobutylene with complexes of acetyl bromide and aluminum bromide

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

Conclusions

  1. 1.

    The complexes AcBr·AlBr3 and AcBr·2AlBr3 initiate cationic polymerization of isobutylene in hydrocarbon medium at −78°C and the complex AcBr·2AlBr3 is more active.

  2. 2.

    Initiation of polymerization under the effect of the AcBr·2AlBr3 complex in hexane at −78°C takes place exclusively with Ac+ and the initiating capacity of the AcBr·AlBr3 complex is due to generation of a proton in the reaction of this complex with the monomer.

  3. 3.

    Under the effect of AcBr·AlBr3 and AcBr·2AlBr3 complexes, chain breaking takes place with the formation of the same C-Br and C=C terminal groups with similar ratios equal to ∼2∶1.

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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 10, pp. 2232–2238, October, 1988.

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Nesmelov, A.I., Orlinkov, A.V., Murachev, V.B. et al. Cationic polymerization of hydrocarbon monomers under the effect of complexes of acyl halides with Lewis acids. Russ Chem Bull 37, 2006–2011 (1988). https://doi.org/10.1007/BF00953394

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  • DOI: https://doi.org/10.1007/BF00953394

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