Synthesis of linear and three-arm star tert-chlorine-telechelic polyisobutylenes by a two-step conventional laboratory process

Jesper Feldthusen, Béla Iván, Axel H.E. Müller, Jørgen Kops

Research output: Article

11 Citations (Scopus)

Abstract

A two-step conventional laboratory process was developed for the synthesis of mono-and difunctional linear and three-arm star tert-chlorine-telechelic polyisobutylenes (PIB) with desired molecular weights (MW) and narrow molecular weight distribution (MWD) by living carbocationic polymerization (LCCP). This polymerization method applies easy to handle operations and chemicals. LCCP of isobutylene (IB) was carried out in CH2Cl2 as solvent and with BCl3 as coinitiator in the first step to obtain soluble low MW PIB prepolymer with narrow MWD. This was followed by addition of hexane, TiCl4 and additional monomer in the second step to prepare PIBs with desired MW and narrow MWD in practically any suitable MW region. Comparison of the one-step and two-step processes is also described.

Original languageEnglish
Pages (from-to)417-425
Number of pages9
JournalMacromolecular Rapid Communications
Volume18
Issue number5
DOIs
Publication statusPublished - máj. 1997

ASJC Scopus subject areas

  • Organic Chemistry
  • Polymers and Plastics
  • Materials Chemistry

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