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Tridentate ligand IV subgroup metal complexes with large steric hindrance and their applications

A metal complex, large space technology, applied in the direction of titanium organic compounds, compounds of Group 4/14 elements of the periodic table, organic chemistry, etc., can solve the problems of poor thermal stability, low catalyst activity, short life, etc. The effect of good thermal performance, high polymerization activity and long life

Inactive Publication Date: 2018-10-16
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved in the present invention is to overcome the shortcomings of existing catalysts with similar structures such as low activity, short life, and poor thermal stability, and provide a class of large steric hindrance [O, X,O](X=O,S) Tridentate Ligand IV Subgroup Metal Complexes and Their Applications in Catalytic Olefin Polymerization

Method used

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  • Tridentate ligand IV subgroup metal complexes with large steric hindrance and their applications
  • Tridentate ligand IV subgroup metal complexes with large steric hindrance and their applications
  • Tridentate ligand IV subgroup metal complexes with large steric hindrance and their applications

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Embodiment 1 Complex C1 and its preparation:

[0023]

[0024] Add 193 mg of bis(2-hydroxy-3-cumyl-5-tert-butyl) benzyl ether (0.33 mmol) to 20 mL of diethyl ether, and then add 0.4 mL of tetrachloride with a concentration of 0.825 mol / L at 0°C The toluene solution of titanium oxide was added dropwise to it, naturally raised to room temperature, stirred for 3 hours, and the solvent was drained to obtain 223 mg brick-red metal titanium complex with a yield of 96.2%, which was recorded as C1.

Embodiment 2

[0025] Embodiment 2 complex C2 and its preparation:

[0026]

[0027] Add 235mg of bis[2-hydroxy-(2,2-diphenylethyl)-5-tert-butyl]benzyl ether (0.33mmol) to 20mL of diethyl ether, and then at -78°C, add 0.4mL of The toluene solution of 0.825mol / L titanium tetrachloride is added dropwise therein, rises naturally to room temperature, stirs 3h, drains solvent, can obtain the complex of 263.1mg brick-red metal titanium, productive rate is 95.6%, record for C2.

Embodiment 3

[0028] Embodiment 3 complex C3 and preparation:

[0029]

[0030] Add 276 mg of bis(2-hydroxy-3-benzyl-5-tert-butyl) benzyl ether (0.33 mmol) to 20 mL of diethyl ether, and then add 0.4 mL of 0.825 mol / L The toluene solution of titanium tetrachloride was added dropwise therein, naturally raised to room temperature, stirred for 3 hours, and the solvent was drained to obtain 274.8 mg brick-red metal titanium complex with a yield of 87.2%, which was recorded as C3.

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Abstract

The invention relates to a large steric hindrance tridentate ligand fourth subgroup metal coordination compound and applications thereof, and belongs to the technical field of olefin polymerization catalysts, wherein the large steric hindrance tridentate ligand fourth subgroup metal coordination compound has the following structural general formula. According to the present invention, the large steric hindrance tridentate ligand fourth subgroup metal coordination compound is adopted as the main catalyst, and the mixture of alkyl aluminoxane or halogenated alkyl aluminum or alkyl aluminum and a boron agent is adopted as a cocatalyst so as to be used for catalysis on ethylene homopolymerization or copolymerization of ethylene and alpha-olefin; and the coordination compound adopted as the catalyst has advantages of stable structure, good heat resistance during the polymerization process, high polymerization activity, and the like.

Description

technical field [0001] The invention belongs to the technical field of olefin polymerization catalysts, in particular to a [O, X, O] (X=O, S) tridentate ligand IV subgroup metal complex with large steric hindrance and its catalytic performance in olefins. applications in aggregation. Background technique [0002] As one of the most widely used polymer materials, polyolefin has penetrated into all aspects of our lives, and its wide application has greatly improved people's living standards and improved people's quality of life. At present, the polyolefin industry has become an important pillar of a country's national economic development, and the design and synthesis of olefin polymerization catalysts are the core of the entire polyolefin industry. It determines the morphology, structure and properties of polymers, so research in this field has always been one of the frontiers and hotspots of contemporary chemistry. In the sixty years of rapid development of the olefin indu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07F7/28C07F7/00C08F10/02C08F4/642
Inventor 母瀛何江浩李丰宋婷婷许博
Owner JILIN UNIV