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Living cationic polymerization of a vinyl ether with a triester pendant

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Summary

Cationic polymerization of CH2=CH-O-CH2CH2C(COOC2H5)3, a vinyl ether with three pendent esters, initiated by the HI/I2 system in toluene at −40 °C afforded living polymers with a controlled molecular weight (\(\bar M_n\) = 103–104) and a narrow molecular weight distribution (\(\bar M_w /\bar M_n\) = 1.1–1.2). The number-average molecular weight of the polymers was directly proportional to monomer conversion and the monomer-to-initiator (HI) feed ratio. The polymers obtained with BF3O(C2H5)2 had a fairly high molecular weight (\(\bar M_w\) ≅ 105, \(\bar M_n\) ≅ 5 × 104) and a broad molecular weight distribution. The triester vinyl ether was similar in reactivity to alkyl counterparts and one order of magnitude more reactive than the corresponding mono- and diester vinyl ethers.

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Authors and Affiliations

  1. Department of Polymer Chemistry, Faculty of Engineering, Kyoto University, 606, Kyoto, Japan

    Masahiko Minoda, Mitsuo Sawamoto & Toshinobu Higashimura

Authors
  1. Masahiko Minoda
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  2. Mitsuo Sawamoto
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  3. Toshinobu Higashimura
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Minoda, M., Sawamoto, M. & Higashimura, T. Living cationic polymerization of a vinyl ether with a triester pendant. Polymer Bulletin 17, 107–112 (1987). https://doi.org/10.1007/BF00256874

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  • DOI: https://doi.org/10.1007/BF00256874

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