Effect of Bis(2-chloro-1-methylethy)ether on Cationic Polymerization of Styrene

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Other Title
  • スチレンのカチオン重合におけるビス(2-クロロ-1-メチルエチル)エーテルの効果

Description

The effect of bis(2-chloro-l-methyl)ethypether (CIPE) on the cationic polymerization of styrene initiated by antimony pentachloride (SbCl5) was studied in cyclohexane solution. The poly- merization degree was increased by the addition of small. amount of CIPE, whereas the rate of polymerization was decreased with increasing of CIPE. The overall activation energy was 7.7 kcal/mol.<BR>CIPE forms a stable complex with SbCl5, which may be dissociated on heating to chloroisopropyl carbonium cation. This carbonium cation is capable of initiating the cationic polymerization of styrene. But the oxonium anion (ClCH2CH(CH3)O-SbCl5) may be more stable than carbonium cation. Therefore the high molecular weight polystyrene (MW=180000) was obtained.

Journal

  • NIPPON KAGAKU KAISHI

    NIPPON KAGAKU KAISHI 1972 (9), 1724-1727, 1972-09-10

    The Chemical Society of Japan

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