Thermostable <italic style="font-style: italic">α</italic>-Diimine Nickel Complexes with Substituents on Acenaphthequinone-backbone for Ethylene Polymerization

Rui-Fang Zhang; Yan-Hui Hou; Xu-Ling Wei; Ding-Ding Zhao; Mi-Mi Cui; Fei-Fan Zhai; Xiang-Liu Li; Bin-Yuan Liu; Min Yang

doi:10.1007/s10118-020-2430-x

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Thermostable α-Diimine Nickel Complexes with Substituents on Acenaphthequinone-backbone for Ethylene Polymerization

ARTICLE | Updated：2020-06-01

- Thermostable α-Diimine Nickel Complexes with Substituents on Acenaphthequinone-backbone for Ethylene Polymerization
- Chinese Journal of Polymer Science Vol. 38, Issue 11, Pages: 1214-1220(2020)
- Affiliations：
  
  a.Hebei Key Laboratory of Functional Polymers, Tianjin Key Laboratory of Chemical Process Safety, Institute of Polymer Science and Engineering, Hebei University of Technology, Tianjin 300130, China
  b.State Key Laboratory of Separation Membranes and Membrane Processes, School of Material Science and Engineering, Tiangong University, Tianjin 300160, China
  c.Lanzhou Petrochemical Research Center, Petrochemical Research Institute of CNPC, Lanzhou 730060, China
- Author bio：
  
  houyh1977@163.com (Y.H.H.)
  polyym@163.com (M.Y.)
- Funds：
- DOI：10.1007/s10118-020-2430-x
  CLC：
- Received：10 February 2020，
  
  Revised：2020-3-18，
  
  Accepted：20 March 2020，
  
  Online First：01 June 2020，
  
  Published：14 August 2020
- Accepted：
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Zhang, R. F.; Hou, Y. H.; Wei, X. L.; Zhao, D. D.; Cui, M. M.; Zhai, F. F.; Li, X. L.; Liu, B. Y.; Yang, M. Thermostable , α,-diimine nickel complexes with substituents on acenaphthequinone-backbone for ethylene polymerization. Chinese J. Polym. Sci. 2020, 38, 1214–1220

Rui-Fang Zhang, Yan-Hui Hou, Xu-Ling Wei, et al. Thermostable α-Diimine Nickel Complexes with Substituents on Acenaphthequinone-backbone for Ethylene Polymerization[J]. Chinese Journal of Polymer Science, 2020, 38(11): 1214-1220. DOI: 10.1007/s10118-020-2430-x.
Zhang, R. F.; Hou, Y. H.; Wei, X. L.; Zhao, D. D.; Cui, M. M.; Zhai, F. F.; Li, X. L.; Liu, B. Y.; Yang, M. Thermostable , α,-diimine nickel complexes with substituents on acenaphthequinone-backbone for ethylene polymerization. Chinese J. Polym. Sci. 2020, 38, 1214–1220 DOI： 10.1007/s10118-020-2430-x.

Rui-Fang Zhang, Yan-Hui Hou, Xu-Ling Wei, et al. Thermostable α-Diimine Nickel Complexes with Substituents on Acenaphthequinone-backbone for Ethylene Polymerization[J]. Chinese Journal of Polymer Science, 2020, 38(11): 1214-1220. DOI: 10.1007/s10118-020-2430-x. DOI：

摘要

Abstract

In order to promote the thermostability of

-diimine nickel complex by ligand backbone structure

a series of

-diimine nickel complexes with substituents on acenaphthequinone backbone were synthesized and used as catalysts for ethylene polymerization. When the hydroxyethyl phenoxyl group was introduced to the acenaphthequinone-backbone

the thermal stability and activity of the catalyst could be significantly improved. The catalytic activity of complex

[5-(4-(2-hydroxyethyl)phenoxyl)-

-bis(2

6-diisopropyl)acenaphthylene-1

2-diimine]nickel(II) dibromide with isopropyl substituents on

-aryl reached 8.2 × 10

g/(mol

·h) at 70 °C and 2 MPa. The activity of [5-(4-(2-hydroxyethyl)phenoxyl)-

-bis(2

6-dibenzhydryl-4-menthylphenyl)acenaphthylene-1

2-diimine]nickel(II) dibromide (

) still maintained at 6.7 × 10

g/(mol

·h) at 120 °C. Compared with

containing bulky dibenzhydryl substituents

the activity of

was sensitive to the change of the polymerization pressure. However

the polyethylenes obtained from complex

had lower branching density. Meanwhile

the molecular weight could reach 971 kg/mol

which is almost 5 times as much as that of the polyethylene obtained from complex

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references

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Thermostable α-Diimine Nickel Complexes with Substituents on Acenaphthequinone-backbone for Ethylene Polymerization

DOI：10.1007/s10118-020-2430-x

摘要

Abstract

关键词

Keywords

references