Ethylene/norbornene copolymerization with iPr(Cp)(Flu)ZrCl2 catalyst: Effect of MAO cocatalyst and 3rd monomer

Keun Byoung Yoon, Yeon Seok Choi, Seok Kyun Noh, Dong Ho Lee

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

The copolymerization of ethylene and norbomene (N) was carried out with iPr(Cp)(FIu)ZrCl2 catalyst and modified methylaluminoxane (MMAO) cocatalyst. The catalytic activity was dependent on the structure of MMAO, i.e., MMAO-4 exhibited higher catalyst activity than MMAO-3A containing more i-butyl groups. The glass transition temperature (Tg) and the composition of the produced copolymer were not affected by MMAO type. With styrene derivatives as 3rd monomer, Tg of copolymer increased while the catalytic activity decreased. With the addition of 3rd monomer, not only the content of 3rd monomer but also the content of N increased.

Original languageEnglish
Pages (from-to)27-33
Number of pages7
JournalMacromolecular Symposia
Volume260
DOIs
StatePublished - 2007

Keywords

  • 3 monomer
  • Ansa-metallocene catalyst
  • Copolymerization
  • Ethylene and norbornene
  • MMAO cocatalyst

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