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
Publication statusPublished - 1996 Jun
Externally publishedYes

Fingerprint

Alkenes
alkenes
Olefins
Ethylene
polymerization
Ligands
Polymerization
catalysts
ligands
Catalysts
ethylene
Copolymerization
Propylene
Catalyst activity
copolymerization
borates
Temperature
Zirconocene dichloride
Borates
tetrakis(pentafluorophenyl)borate

ASJC Scopus subject areas

  • Organic Chemistry
  • Physical and Theoretical Chemistry
  • Materials Chemistry
  • Polymers and Plastics

Cite this

Ligand effects on olefin polymerizations with multinuclear zirconocene catalysts having dimethylsilylferrocene as a cyclopentadienyl substituent. / Mitani, Makoto; Oouchi, Kunihiro; Hayakawa, Michiya; Yamada, Tohru; Mukaiyama, Teruaki.

In: Macromolecular Chemistry and Physics, Vol. 197, No. 6, 06.1996, p. 1815-1822.

Research output: Contribution to journalArticle

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