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The synthesis of chlorine-terminated telechelic polyisobutylene

I. Investigation on cycloalkylation

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Abstract

In synthesizing chlorine-terminated telechelic polyisobutylene (PIB) with a p-DCCCp-dichlorocumene/BCl3/CH2Cl2 system, it is found that cycloalkylation occurs parallel with propagation. The factors leading to cycloalkylation were investigated in detail, to clarify its origin, to define its effects upon the molecular parameters of the polymer produced and to find ways to suppress it. It is found that cycloalkylation drastically influences MW, MWD and functionality of the polymer produced. High temperature, high medium polarity, low monomer concentration and the order of addition of BCl3 and p-DCC are the main factors favoring cycloalkylation.

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Authors and Affiliations

  1. Research Institute of Polymer Materials, Beijing Institute of Chemical Technology, Beijing, Peoples Republic of China

    Wu Guanying, Cheng Bin & Zhao Yixin

Authors
  1. Wu Guanying
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  2. Cheng Bin
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  3. Zhao Yixin
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Guanying, W., Bin, C. & Yixin, Z. The synthesis of chlorine-terminated telechelic polyisobutylene. Polymer Bulletin 20, 221–228 (1988). https://doi.org/10.1007/BF00261972

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  • DOI: https://doi.org/10.1007/BF00261972

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