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Supported non-metallocene catalyst, preparation method and application

A non-metallocene and non-metallocene ligand technology, applied in the field of non-metallocene catalysts, can solve the problem of small change range, failure to fully exert the decisive role of non-metallocene ligands and complexes, and limit the support of non-metallocene catalysts Industrial large-scale application and other problems, to achieve the effect of simple preparation method

Active Publication Date: 2013-03-13
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] Although the performance of polymers prepared by supported non-metallocene catalysts has been improved compared with Ziegler-Natta catalysts, the change range is small, and the decisive effect of non-metallocene ligands and complexes on polymer properties cannot be fully utilized, thus limiting Industrial large-scale application of supported non-metallocene catalysts

Method used

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  • Supported non-metallocene catalyst, preparation method and application
  • Supported non-metallocene catalyst, preparation method and application
  • Supported non-metallocene catalyst, preparation method and application

Examples

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preparation example Construction

[0143] The invention relates to a preparation method of a supported non-metallocene catalyst, comprising the following steps: dissolving a magnesium compound in a first solvent in the presence of alcohol to obtain a magnesium compound solution; making the porous The step of contacting the carrier, the magnesium compound solution with a non-metallocene ligand to obtain a first mixed slurry; directly drying the first mixed slurry to obtain a composite carrier; making a chemical treatment agent selected from Group IVB metal compounds and Reacting the composite carrier to obtain a modified composite carrier; contacting the non-metallocene complex with the modified composite carrier in the presence of a second solvent to obtain a second mixed slurry; and directly drying the second mixed slurry, the step of obtaining the supported non-metallocene catalyst.

[0144] The magnesium compound will be specifically described below.

[0145] According to the present invention, the term "ma...

Embodiment 1

[0434] The magnesium compound adopts anhydrous magnesium chloride, and the non-metallocene ligand adopts the structure For the compound, the first solvent is hexane, the alcohol is ethanol, and the porous carrier is silicon dioxide, that is, silica gel, the model is ES757 of Ineos Company. First, the silica gel is continuously calcined at 600° C. for 4 hours in a nitrogen atmosphere to be thermally activated. The IVB chemical treatment agent adopts titanium tetrachloride (TiCl 4 ), the second solvent adopts dichloromethane, and the non-metallocene complex adopts the structure compound of.

[0435] Weigh 5 grams of magnesium compound, add it to the first solvent, then add alcohol and non-metallocene ligands, completely dissolve at room temperature to obtain a magnesium compound solution, then add a porous carrier, and stir for 2 hours to obtain the first mixed slurry, then Uniformly heated to 90° C., and directly vacuum-dried to obtain a composite carrier.

[0436] Add the...

Embodiment 2

[0441] Basically the same as Example 1, but with the following changes:

[0442] Before the modified composite carrier is in contact with the non-metallocene complex, it is treated with triethylaluminum as an auxiliary chemical treatment agent to obtain a pretreated modified composite carrier.

[0443] That is, add the modified composite carrier to the hexane solvent, then slowly add the auxiliary chemical treatment agent triethylaluminum (concentration: 0.88mol / L, hexane solution), stir at 60°C for 2 hours, filter, wash with hexane 3 times, 60ml each time, and finally vacuum-dried at 60°C to obtain a pretreated modified composite carrier. The molar ratio of the magnesium compound to the auxiliary chemical treatment agent is 1:0.2.

[0444] Supported non-metallocene catalysts are designated CAT-2.

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Abstract

The invention relates to a supported non-metallocene catalyst and a preparation method. The supported non-metallocene catalyst is prepared by the steps of dissolving a non-metallocene ligand in a magnesium compound solution, performing an in-situ reaction with a chemical treatment agent, and dipping a solution of a non-metallocene complex. The preparation method is simple and feasible, the ingredients content of the non-metallocene is adjustable, and the copolymerization effect is substantial. The invention also relates to the application of the supported non-metallocene catalyst in olefin homopolymerisation / copolymerization. Compared with the prior art, the polymerization activity by catalysis of alkene is high, the bulk density of the polymer is high, and the molecular weight distribution is narrow and controllable.

Description

[0001] This application is based on the ongoing research project of "National Eleventh Five-Year Support Program Topics". The project has been highly valued and strongly supported by the Ministry of Science and Technology of the People's Republic of China. Its goal is to form a new generation of polyolefin catalyst technology with independent intellectual property rights, improve the homogeneity of domestic related products, improve the grade of polyolefin varieties in my country, and promote its development. Development in the direction of diversification, serialization, specialization and high performance. technical field [0002] The present invention relates to a non-metallocene catalyst. Specifically, the present invention relates to a supported non-metallocene catalyst, its preparation method and its application in olefin homopolymerization / copolymerization. Background technique [0003] The non-metallocene catalysts that appeared in the middle and late 1990s, also kno...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F10/00C08F4/02C08F4/658C08F4/654C08F4/653C08F4/655C08F4/646C08F4/645C08F4/649
Inventor 任鸿平李传峰郭峰阚林柏基业马忠林陈韶辉汪开秀王亚明杨爱武
Owner CHINA PETROLEUM & CHEM CORP
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