Design and synthesis of binuclear vanadium catalysts for copolymerization of ethylene and polar monomers

Several binuclear vanadium complexes were synthesized and investigated as catalysts for ethylene (co)polymerization. Under the activation of Et 2 AlCl, the binuclear vanadium complexes exhibited higher activities than the mononuclear analogues in ethylene polymerization. Also, the binuclear complexe...

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Bibliographic Details
Published in:Polymer chemistry 2022-07, Vol.13 (26), p.3876-3881
Main Authors: Nie, Jinxin, Ren, Feiyang, Li, Zhen, Tian, Kun, Zou, Hui, Hou, Xiaohua
Format: Article
Language:English
Subjects:
Catalysts
Chemical synthesis
Copolymerization
Monomers
NMR
Nuclear magnetic resonance
Polyethylenes
Polymer chemistry
Polymerization
Vanadium
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Summary:Several binuclear vanadium complexes were synthesized and investigated as catalysts for ethylene (co)polymerization. Under the activation of Et 2 AlCl, the binuclear vanadium complexes exhibited higher activities than the mononuclear analogues in ethylene polymerization. Also, the binuclear complexes showed moderate activity in the copolymerization with polar vinyl monomers such as 6-chlorohex-1-ene, 10-undecen-1-ol and methyl 10-undecenoate. In the copolymerization with methyl acrylate, the binuclear catalysts exhibited good tolerance to the polar group with activity up to 529 kg mol V −1 h −1 . But only a pure polyethylene product was obtained according to the 1 H NMR spectrum. Binuclear vanadium complexes exhibited higher activity than monometallic complexes in ethylene polymerization and afforded UHMWPE. The binuclear catalysts also showed moderate activity in copolymerization with 10-undecen-1-ol and methyl 10-undecenoate.
ISSN:1759-9954
1759-9962
DOI:10.1039/d2py00402j