Post-transition metal complex, preparation method thereof and polyethylene preparation method

A late transition metal and complex technology, applied in the field of catalysts, can solve the problem of low catalytic activity of late transition metal complexes
CN102775448AActive Publication Date: 2012-11-14CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
Publication Date
2012-11-14

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Abstract

The invention provides a post-transition metal complex having a structure shown in a formula (I). The invention also provides a preparation method of the post-transition metal complex, which comprises the following steps: performing first reaction on di(substituted phenylamine)-2,6-pyridine dicarboxamide and phosphorous pentachloride in a first organic solvent to obtain a ligand having a structure shown in a formula (II); and performing second reaction on the ligand and post-transition metal halide in a second organic solvent to obtain the post-transition metal complex having the structure shown in the formula (I). The invention also provides a polyethylene preparation method which comprises the following specific step: under the effects of a cocatalyst and the post-transition metal complex having the structure shown in the formula (I), performing polymerization reaction on ethylene in an organic solvent to obtain polyethylene. The post-transition metal complex provided by the invention has high catalytic activity in catalytic ethylene polymerization.
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Description

technical field

[0001] The invention relates to the technical field of catalysts, in particular to a late transition metal complex, a preparation method thereof, and a preparation method of polyethylene. Background technique

[0002] The development of polyolefin industry is an important symbol of the development of a country's petrochemical industry. Ziegler-Natta catalysts, metallocene catalysts and late transition metal catalysts are the three main research directions of olefin polymerization catalysts. Due to the low price and environmental friendliness of late transition metals, late transition metal catalysts based on olefin polymerization have made great progress in recent years, and late transition metal catalyst systems have gradually become a research hotspot.

[0003] Brookhart et al. invented the Ξ±-bisimine NN bidentate system, which selected Ni and Pd as the central metal, which showed good activity for ethylene polymerization, and used this system to realize t...

Claims

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