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Amine bis(phenolate) tetradentate ligand fourth sub-group metal complex and application thereof

A technology of metal complexes and tetradentate ligands, used in the application of catalytic olefin polymerization, [N,X,O,O]amine bisphenol tetradentate ligands in the field of fourth subgroup metal complexes, which can solve the structural problems Unsuitable and other problems, to achieve the effect of stable structure, high catalytic activity and good heat resistance

Active Publication Date: 2015-11-18
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This type of complex is mainly used to catalyze the ring-opening polymerization of lactide, and its structure is not suitable for catalyzing olefin polymerization

Method used

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  • Amine bis(phenolate) tetradentate ligand fourth sub-group metal complex and application thereof
  • Amine bis(phenolate) tetradentate ligand fourth sub-group metal complex and application thereof
  • Amine bis(phenolate) tetradentate ligand fourth sub-group metal complex and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Example 1 Preparation of Complex C1.

[0020]

[0021] At -78°C, add dropwise 0.4 mL of a toluene solution of titanium tetrachloride with a concentration of 0.825 mol / L to 20 mL of a ligand L1H with a concentration of 0.0165 mol / L 2 In the toluene solution, the mixture was naturally raised to room temperature, stirred for 3 hours, and the solvent was drained to obtain 223 mg of a brick-red metal titanium complex with a yield of 96.2%, which was designated as C1.

Embodiment 2

[0022] Example 2 Preparation of Complex C2.

[0023]

[0024] At -78°C, add 0.4 mL of a toluene solution of titanium tetrachloride with a concentration of 0.825 mol / L dropwise to 20 mL of a ligand L2H with a concentration of 0.0165 mol / L 2 Naturally rise to room temperature in a toluene solution, stir for 3 h, and drain the solvent. That is to say, 276.4 mg of the brick-red compound metal titanium complex was obtained in high yield, with a yield of 95.6%, which was denoted as C2.

Embodiment 3

[0025] Example 3 Preparation of Complex C3.

[0026]

[0027] At -78°C, add 0.4 mL of a toluene solution of titanium tetrachloride with a concentration of 0.825 mol / L dropwise to 20 mL of a ligand L3H with a concentration of 0.0165 mol / L 2 Naturally rise to room temperature in a toluene solution, stir for 3 h, and drain the solvent. 287.8 mg of brick-red metal titanium complex can be obtained with a yield of 87.2%, which is denoted as C3.

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PUM

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Abstract

The amine bis(phenolate) tetradentate ligand fourth sub-group metal complex and application thereof, and belongs to the technical field of olefin polymerization catalysts. The structural formula of the amine bis(phenolate) tetradentate ligand fourth sub-group metal complex is shown in the description. The amine bis(phenolate) tetradentate ligand fourth sub-group metal complex as a main catalyst, and alkylaluminoxane, halogenated alkyl aluminium, or a mixture of aluminum alkyl and a boron agent as a promoter can be used for catalyzing ethylene homopolymerization, alpha-olefin homopolymerization or copolymerization of ethylene and alpha-olefins. The complex provided by the invention as a catalyst has the advantages of being good in heat resistance and high in polymerization activity during the polymerization process.

Description

technical field [0001] The invention belongs to the technical field of olefin polymerization catalysts, in particular to a [N, X, O, O] (X=O, N) amine bisphenol tetradentate ligand IV subgroup metal complex and its use in catalyzing olefin polymerization Applications. Background technique [0002] Polyolefin products are low in price, rich in raw materials, easy to process and shape, good in insulation and corrosion resistance, and excellent in comprehensive performance. They are a kind of polymer materials with the largest output and wide application. As a substitute for materials such as glass, metal, paper and concrete, polyolefin products have shown broad application prospects for the manufacture of optical instruments, chemical and medical appliances, electronic devices and insulating materials, gas separation membranes and packaging materials, fibers, etc. . In the future social development, the demand for polyethylene and polypropylene will increase enormously. Aft...

Claims

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Application Information

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IPC IPC(8): C07F7/28C07F7/00C08F10/00C08F4/64
Inventor 母瀛何江浩李丰宋婷婷许博
Owner JILIN UNIV
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