Styrene polymerization with half-sandwiched titanocene trichloride catalysts combined with alkylaluminum-Ph3CB(C6F5)4 cocatalyst systems

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Abstract

Half-sandwiched titanocene trichloride (Cp′TiCl3; Cp′ = cyclopentadienyl, Cp; pentamethylcyclopentadienyl, Cp*; indenyl, Ind) combined with an alkylaluminum (triisobutylaluminum, diisobutylaluminum hydride, or trioctylaluminum)/Ph3CB(C6F5)4 cocatalyst system has been examined for polymerization of styrene. Syndiospecific polymerization of styrene proceeded under limited polymerization conditions. The maximum productivity of syndiotactic polystyrene was attained under the following conditions: Al/Ti molar ratio = 20 (mol/mol), polymerization temperature = 40-50 °C. The nature of alkylaluminum compounds and the ligand structure of the catalysts affected the range of the polymerization temperature in which proceeds the syndiospecific polymerization of styrene.

Original languageEnglish
Pages (from-to)206-211
Number of pages6
JournalJournal of Molecular Catalysis A: Chemical
Volume263
Issue number1-2
DOIs
Publication statusPublished - 2007 Feb 14

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Keywords

  • Alkylaluminum
  • Borate compound
  • Half-sandwiched titanocene trichloride
  • Styrene
  • Syndiospecific polymerization

ASJC Scopus subject areas

  • Catalysis
  • Process Chemistry and Technology
  • Physical and Theoretical Chemistry

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