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 language | English |
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Pages (from-to) | 27-33 |
Number of pages | 7 |
Journal | Macromolecular Symposia |
Volume | 260 |
DOIs | |
State | Published - 2007 |
Keywords
- 3 monomer
- Ansa-metallocene catalyst
- Copolymerization
- Ethylene and norbornene
- MMAO cocatalyst