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- Title
Copolymerization of Ethylene and 1-Hexene with Ansa-Dimethylsilylene(fluorenyl) ( t-butylamido)Dimethyltitanium Complexes Activated by Modified Methylaluminoxane.
- Authors
Wannaborworn, Mingkwan; Praserthdam, Piyasan; Jongsomjit, Bunjerd; Cai, Zhengguo; Yano, Haruki; Shiono, Takeshi
- Abstract
ansa-Dimethylsilylene(fluorenyl)( t-butylamido)dimethyltitanium complex, Me2Si( η3-C13H8)( η1-N tBu)TiMe2 (1 ), and its tetraalkylsubsutituted-fluorenyl derivative, Me2Si( η3-C29H36)( η1-N tBu)TiMe2 (2), are used as catalysts for ethylene/1-hexene copolymerization activated by modified methylalminoxane. 2 is found to show remarkable activity and affords high-molecular-weight polymer compared with 1. The monomer reactivity ratios, rE and rH, are determined to be rE = 3.0 ± 0.15, rH = 0.19 ± 0.06 for 1, and rE = 2.9 ± 0.15, rH = 0.27 ± 0.02 for 2, indicating that 2 incorporates 1-hexene slightly more than 1.
- Subjects
SILYLENES; CATALYSTS; ETHYLENE synthesis; COPOLYMERIZATION; MOLECULAR weights; POLYMER research
- Publication
Macromolecular Chemistry & Physics, 2013, Vol 214, Issue 22, p2584
- ISSN
1022-1352
- Publication type
Article
- DOI
10.1002/macp.201300446