Synthesis of PE Wax by Chromium Complexes Bearing NP Ligands

Jinlong Gao; Le Zhang; Fakhre Alam; Yanhui Chen; Tao Jiang

doi:10.1002/slct.201800952

Synthesis of PE Wax by Chromium Complexes Bearing NP Ligands

Jinlong Gao, Le Zhang, Fakhre Alam, Yanhui Chen, Tao Jiang^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

Three binuclear chromium complexes stabilized by 1,5,9,13-tetra(phosphinoamine)cyclohexadecane ligand were synthesized and characterized. In combination with TMA-depleted methylalumoxane/triethylaluminium (DMAO/TEA) as cocatalyst, they generate active catalytic systems for ethylene polymerization to form ultra low molecular weight polyethylene (PE) wax with moderate catalytic activity in methylcyclohexane (MeCy). The molecular weight of PE wax is ranging from 612 to 841 g/mol with a narrow polydispersity (PD=1.37-1.80). The effects of polymerization parameters, such as solvent, temperature, catalyst concentration, the ratio of cocatalyst on the catalytic activity and properties of the PE wax were also investigated.

Original language	English
Pages (from-to)	6468-6472
Number of pages	5
Journal	ChemistrySelect
Volume	3
Issue number	23
DOIs	https://doi.org/10.1002/slct.201800952
State	Published - 22 Jun 2018
Externally published	Yes

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Publisher Copyright:
© 2018 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim

ASJC Scopus subject areas

General Chemistry

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title = "Synthesis of PE Wax by Chromium Complexes Bearing NP Ligands",

abstract = "Three binuclear chromium complexes stabilized by 1,5,9,13-tetra(phosphinoamine)cyclohexadecane ligand were synthesized and characterized. In combination with TMA-depleted methylalumoxane/triethylaluminium (DMAO/TEA) as cocatalyst, they generate active catalytic systems for ethylene polymerization to form ultra low molecular weight polyethylene (PE) wax with moderate catalytic activity in methylcyclohexane (MeCy). The molecular weight of PE wax is ranging from 612 to 841 g/mol with a narrow polydispersity (PD=1.37-1.80). The effects of polymerization parameters, such as solvent, temperature, catalyst concentration, the ratio of cocatalyst on the catalytic activity and properties of the PE wax were also investigated.",

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T1 - Synthesis of PE Wax by Chromium Complexes Bearing NP Ligands

AU - Gao, Jinlong

AU - Zhang, Le

AU - Alam, Fakhre

AU - Chen, Yanhui

AU - Jiang, Tao

PY - 2018/6/22

Y1 - 2018/6/22

N2 - Three binuclear chromium complexes stabilized by 1,5,9,13-tetra(phosphinoamine)cyclohexadecane ligand were synthesized and characterized. In combination with TMA-depleted methylalumoxane/triethylaluminium (DMAO/TEA) as cocatalyst, they generate active catalytic systems for ethylene polymerization to form ultra low molecular weight polyethylene (PE) wax with moderate catalytic activity in methylcyclohexane (MeCy). The molecular weight of PE wax is ranging from 612 to 841 g/mol with a narrow polydispersity (PD=1.37-1.80). The effects of polymerization parameters, such as solvent, temperature, catalyst concentration, the ratio of cocatalyst on the catalytic activity and properties of the PE wax were also investigated.

AB - Three binuclear chromium complexes stabilized by 1,5,9,13-tetra(phosphinoamine)cyclohexadecane ligand were synthesized and characterized. In combination with TMA-depleted methylalumoxane/triethylaluminium (DMAO/TEA) as cocatalyst, they generate active catalytic systems for ethylene polymerization to form ultra low molecular weight polyethylene (PE) wax with moderate catalytic activity in methylcyclohexane (MeCy). The molecular weight of PE wax is ranging from 612 to 841 g/mol with a narrow polydispersity (PD=1.37-1.80). The effects of polymerization parameters, such as solvent, temperature, catalyst concentration, the ratio of cocatalyst on the catalytic activity and properties of the PE wax were also investigated.

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Synthesis of PE Wax by Chromium Complexes Bearing NP Ligands

Abstract

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