Citation: Ling-pan Lu, Jing-shan Mu, Yue-sheng Li. Copolymerization of Ethylene with 10-Undecen-1-ol Using Highly Active Vanadium(Ⅲ) Precatalysts Bearing Bis(imino)pyrrolyl Ligands[J]. Chinese Journal of Polymer Science, ;2014, 32(5): 603-608. doi: 10.1007/s10118-014-1436-7 shu

Copolymerization of Ethylene with 10-Undecen-1-ol Using Highly Active Vanadium(Ⅲ) Precatalysts Bearing Bis(imino)pyrrolyl Ligands

Ling-pan Lu ^1,2,3 ,
Jing-shan Mu ⁴ ,
Yue-sheng Li ^5,,

1.
1. State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
2.
2. University of the Chinese Academy of Sciences, Changchun Branch, Changchun 130022, China
3.
4.
The school of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315221, China
5.
State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China

Corresponding author: Yue-sheng Li,
Received Date: 22 July 2013
Revised Date: 20 December 2013

Fund Project: This work was financially supported the National Natural Science Foundation of China (No. 51073158).

The copolymerizations of ethylene with 10-undecen-1-ol have been investigated using vanadium precatalysts, bis(imino)pyrrolyl vanadium(Ⅲ) complexes 1-3, 2,5-C4H2N(CH=NR)2VCl2(THF)2 [R = C6H5 (1), 2,6-iPr2C6H3 (2), C6F5 (3)], and the iminopyrrolyl and b-diketiminate ones for comparison. The polar monomer was pretreated by diethylaluminium chloride (present also as the cocatalyst) before the copolymerization. The monomer reactivity ratios were evaluated using the Fineman-Ross method. The ligand structure considerably influenced the catalytic activity and tolerance towards the polar monomer, the polar monomer incorporation and the molecular weights of the resultant copolymers. The bis(imino)pyrrolyl vanadium complexes exhibited promising catalytic performance for the copolymerization, and a high catalytic activity up to 3.84 kg/mmolvh with a high comonomer incorporation of 14.0 mol% was achieved by complex 3 under mild conditions.
- Ziegler-Natta polymerization,
- Copolymerization,
- Functional polyolefin
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