Ligand effects on olefin polymerizations with multinuclear zirconocene catalysts having dimethylsilylferrocene as a cyclopentadienyl substituent

Makoto Mitani, Kunihiro Oouchi, Michiya Hayakawa, Tohru Yamada, Teruaki Mukaiyama

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Olefin polymerizations were conducted with novel multimetallic zirconocene catalyst systems: R-CpCpZrCl2 (1) (R = dimethylsilylferrocene; Cp = cyclopentadienyl) and (R-Cp)2ZrCl2 (2) in combination with methylaluminoxane or tetrakis(pentafluorophenyl) borates. In ethylene polymerization, the maximum catalyst activity was observed at a lower temperature (30-45°C) when using complex 1 or 2, compared with Cp2ZrCl2. It was also revealed that complex 1 is a more effective catalyst than Cp2ZrCl2 for copolymerization of ethylene and propene.

Original languageEnglish
Pages (from-to)1815-1822
Number of pages8
JournalMacromolecular Chemistry and Physics
Volume197
Issue number6
DOIs
Publication statusPublished - 1996 Jun
Externally publishedYes

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Organic Chemistry
  • Polymers and Plastics
  • Materials Chemistry

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