Half-metallocene zirconium complex bearing tridentate [N,N,O] ligand and its use in homo- and copolymerization of ethylene
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2013-08-27
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The novel half-metallocene zirconium (IV) bearing quinoline-amino-phenolate tridentate ligand (Zr1) was synthesized and characterized by elemental analysis, NMR spectroscopy, and X-ray crystallography. The complex Zr1, upon activation with MAO, proved active in the polymerization of ethylene (26-2015 kg of PE/mol[Zr]·h− 1), yielding high-density polyethylenes with molecular weight varying from 129 to 364 × 103 g·mol− 1. Complex Zr1 was also tested in the copolymerization of ethylene with 1-hexene affording high molecular weight poly(ethylene-co-1-hexene) with low comonomer incorporation (1.0–1.9%).
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Half-metallocene, Zirconium, Ethylene polymerization, Ethylene/1-hexene copolymerization
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BERGAMO, Adão L.; CHAGAS, Rafael P. das; CASAGRANDE JUNIOR, Osvaldo de L. et al. Half-metallocene zirconium complex bearing tridentate [N,N,O] ligand and its use in homo- and copolymerization of ethylene. Catalysis Communications, Amsterdam, v. 42, p. 113-115, 2013. DOI: 10.1016/j.catcom.2013.08.016. Disponível em: https://www.sciencedirect.com/science/article/pii/S1566736713003257?via%3Dihub. Acesso em: 31 jul. 2024.