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Polymers 2017, 9(5), 168; doi:10.3390/polym9050168

Influence of Ligand Backbone Structure and Connectivity on the Properties of Phosphine-Sulfonate Pd(II)/Ni(II) Catalysts

Chinese Academy of Sciences Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei 230026, China
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Academic Editor: Marinos Pitsikalis
Received: 1 April 2017 / Revised: 28 April 2017 / Accepted: 3 May 2017 / Published: 9 May 2017
(This article belongs to the Special Issue Olefin Polymerization and Polyolefin)
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Abstract

Phosphine-sulfonate based palladium and nickel catalysts have been extensively studied in ethylene polymerization and copolymerization reactions. Previously, the majority of the research works focused on the modifications of the substituents on the phosphorous atom. In this contribution, we systematically demonstrated that the change of the ligand backbone from benzene to naphthalene could greatly improve the properties of this class of catalysts. In the palladium system, this change could increase catalyst stability and polyethylene molecular weights. In the nickel system, this change could dramatically increase the polyethylene molecular weights. Most interestingly, the change in the connectivity of phosphine and sulfonate moieties to the naphthalene backbone could also significantly influence the catalyst properties. View Full-Text
Keywords: phosphine-sulfonate; palladium; nickel; olefin polymerization; copolymerization phosphine-sulfonate; palladium; nickel; olefin polymerization; copolymerization
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Wu, Z.; Hong, C.; Du, H.; Pang, W.; Chen, C. Influence of Ligand Backbone Structure and Connectivity on the Properties of Phosphine-Sulfonate Pd(II)/Ni(II) Catalysts. Polymers 2017, 9, 168.

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