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

doi:10.11944/j.issn.1000-0518.2019.10.190171

Chinese Journal of Applied Chemistry ›› 2019, Vol. 36 ›› Issue (10): 1128-1134.DOI: 10.11944/j.issn.1000-0518.2019.10.190171

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

LIANG Shanshan^a,LIU Heng^b^*(),HU Yanming^b^*(),ZHANG Xuequan^b

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

Received:2019-06-20 Accepted:2019-08-25 Published:2019-10-01 Online:2019-09-29
Contact: LIU Heng,HU Yanming
Supported by:
Supported by Jilin Provincial Science and Technology Development Program(No.20190103122JH)

Abstract

Abstract:

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.

Key words: self-immobilization, vanadium precatalyst, polyolefin

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.

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

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