ETHYLENE POLYMERIZATION AND ETHYLENE/HEXENE COPOLYMERIZAION WITH VANDIUM CATALYSTS BEARING THIOPHENOLPHOSPHINE LIGANDS

Sen-wang Zhang; Yan-guo Li; Ling-pan Lu; Yue-sheng Li

doi:10.1007/s10118-013-1282-z

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ETHYLENE POLYMERIZATION AND ETHYLENE/HEXENE COPOLYMERIZAION WITH VANDIUM CATALYSTS BEARING THIOPHENOLPHOSPHINE LIGANDS

Special Issue: In Honor of the 80th Birthday of Professor Fosong Wang (Part II) | Updated：2023-01-03

- ETHYLENE POLYMERIZATION AND ETHYLENE/HEXENE COPOLYMERIZAION WITH VANDIUM CATALYSTS BEARING THIOPHENOLPHOSPHINE LIGANDS
- Chinese Journal of Polymer Science Vol. 31, Issue 6, Pages: 885-893(2013)
- Affiliations：
  
  State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
- Author bio：
  
  **Yue-sheng Li (李悦生), E-mail: ysli@ciac.jl.cn
- Funds：
- DOI：10.1007/s10118-013-1282-z
  CLC：
- Received：31 December 2012，
  
  Revised：2013-01-31，
  
  Accepted：05 February 2013，
  
  Published：2013-06
- Accepted：
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Sen-wang Zhang, Yan-guo Li, Ling-pan Lu, et al. ETHYLENE POLYMERIZATION AND ETHYLENE/HEXENE COPOLYMERIZAION WITH VANDIUM CATALYSTS BEARING THIOPHENOLPHOSPHINE LIGANDS[J]. Chinese Journal of Polymer Science, 2013, 31(6): 885-893.
DOI：

Sen-wang Zhang, Yan-guo Li, Ling-pan Lu, et al. ETHYLENE POLYMERIZATION AND ETHYLENE/HEXENE COPOLYMERIZAION WITH VANDIUM CATALYSTS BEARING THIOPHENOLPHOSPHINE LIGANDS[J]. Chinese Journal of Polymer Science, 2013, 31(6): 885-893. DOI： 10.1007/s10118-013-1282-z.

摘要

Abstract

Vanadium(III) complexes bearing thiophenol-phosphine ligands (2a−2b) (2-R-6-PPh

-C

S) VCl

(THF)

(2a: R = H; 2b: R = Me

Si) were prepared from VCl

(THF)

by treating with 1.0 equiv of the ligand in tetrahydrofuran in the presence of excess triethylamine. The two complexes were characterized by FTIR and mass spectra as well as elemental analyses. On activation with Et

AlCl

these complexes exhibited high catalytic activities (up to 22.1 kg PE/(mmolV⋅h⋅bar)) even at high temperature (70℃)

and produced high molecular weight polymers with unimodal molecular weight distributions

indicating the polymerization took place in a single-site nature. This result may be attributed to benefits of introduction of second-row donor atoms for adjusting charge density of the vanadium centers. In addition

these complexes also exhibited high catalytic activities for ethylene/1-hexene copolymerization. Catalytic activity

comonomer incorporation and polymer molecular weight can be controlled in a wide range by the variation of catalyst structure and the reaction parameters such as Al/V molar ratio

comonomer feed concentration and polymerization reaction temperature.

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