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- W1994604471 abstract "Abstract Five different tetraalkylaluminoxanes, tetraisobutylaluminoxane (A1), ethyltriisobutylaluminoxane (A2), diethyldiisobutylaluminoxane (A3), triethylisobutylaluminoxane (A4) and tetraethylaluminoxane (A5), were prepared to polymerize ethylene in the presence of iron complexes [((2,6-RPh)N C(Me))2C5H3N]FeCl2 (R Me, M1; R iso-Pr, M2). Except M1/A1 and M2/A1, all other catalyst systems produced polyethylene with pronounced broad or bimodal molecular weight distribution (MWD). It was demonstrated that the low-MW fractions of these broad- or bimodal-MWD polyethylenes result from the chain transfer reaction to the alkylaluminium containing the Al–Et groups in the activator. As the Al/Fe ratio and the amount of the Al–Et groups in the activators increased in the order: A1" @default.
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- W1994604471 date "2005-06-01" @default.
- W1994604471 modified "2023-09-27" @default.
- W1994604471 title "Effects of tetraalkylaluminoxane activators on ethylene polymerization catalyzed by iron-based complexes" @default.
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- W1994604471 doi "https://doi.org/10.1016/j.eurpolymj.2005.01.008" @default.
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