Citation: LIANG Shanshan, LIU Heng, HU Yanming, ZHANG Xuequan. Self-immobilization of Alkenyl-Functionalized Bis(imidate)pyridine Vanadium(Ⅲ) Complexes for Ethylene Homo(co)polymerization[J]. Chinese Journal of Applied Chemistry, ;2019, 36(10): 1128-1134. doi: 10.11944/j.issn.1000-0518.2019.10.190171 shu

Self-immobilization of Alkenyl-Functionalized Bis(imidate)pyridine Vanadium(Ⅲ) Complexes for Ethylene Homo(co)polymerization

a.
College of Material Science and Engineering, Shenyang University of Chemical Technology, Shenyang 110142, China
b.
Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, CAS Key Laboratory of High-Performance Synthetic Rubber and Its Composite Materials, Changchun 130022, China

Corresponding author: LIU Heng, hengliu@ciac.ac.cn HU Yanming, ymhu@ciac.ac.cn
Received Date: 20 June 2019
Revised Date: 26 July 2019
Accepted Date: 25 August 2019

Fund Project: Jilin Provincial Science and Technology Development Program 20190103122JHSupported by Jilin Provincial Science and Technology Development Program(No.20190103122JH)

Figures(4)

A series of alkenyl-functionalized bis(imidate)pyridine vanadium V(Ⅲ) complexes was synthesized and used for olefin polymerization in a self-immobilization mode. All the complexes were well-characterized by Fourier transform infrared spectrometer(FTIR), elemental analysis and nuclear magnetic resonance spectroscopy(NMR). Being activated by ethylaluminum sesquichloride(EASC), the V(Ⅲ) complexes displayeded high activity in ethylene polymerization(7.2~12.1 g/(mol·h·Pa)). Additionally, the length of self-immobilized alkenyl chains showed a little influence on the catalytic activity of the precatalysts. These V(Ⅲ) complexes also exhibited high activity in initiating ethylene/1-hexene copolymerization, affordiong copolymer products with high molecular weight(up to 68.1×10³). Scanning electron microscope(SEM) studies showed that the polymer products formed platelet clusters.
- self-immobilization,
- vanadium precatalyst,
- polyolefin
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1.
沈阳化工大学材料科学与工程学院沈阳 110142