Supported non-metallocene catalyst, preparation method and application

A non-metallocene, supported technology, applied in the field of non-metallocene catalysts, can solve the problems of small change range, failure to give full play to the decisive role of non-metallocene ligands and complexes, adverse effects on performance, etc., and achieves a simple preparation method. Effect

Active Publication Date: 2013-03-13
CHINA PETROLEUM & CHEM CORP +1
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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
For the composite support formed by porous carrier and magnesium compound, such as Chinese patent 20

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

[0145] The invention relates to a preparation method of a supported non-metallocene catalyst, comprising the following steps: reacting a first chemical treatment agent selected from group IVB metal compounds with a porous carrier optionally subjected to thermal activation treatment to obtain a modified carrier; Dissolving the magnesium compound in the first solvent to obtain a magnesium compound solution; contacting the modified carrier and the magnesium compound solution with a non-metallocene ligand to obtain a first mixed slurry; directly drying the first Mixing the slurry to obtain a composite carrier; reacting a second chemical treatment agent selected from the IVB group metal compound with the composite carrier to obtain a modified composite carrier; making the non-metallocene complex and the modified composite carrier contacting in the presence of a second solvent to obtain a second mixed slurry; and directly drying the second mixed slurry to obtain the supported non-met...

Embodiment 1

[0429] The magnesium compound adopts anhydrous magnesium chloride, and the non-metallocene ligand adopts the structure For the compound, the first solvent is xylene, and the porous carrier is silicon dioxide, that is, silica gel, the model of which 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. Both the first and second chemical treatment agents of Group IVB use titanium tetrachloride (TiCl 4 ), the second solvent adopts dichloromethane, and the non-metallocene complex adopts the structure compound of.

[0430] Weigh the thermally activated porous carrier, add 60ml of hexane, add the first chemical treatment agent under the condition of stirring at room temperature, react at 60°C for 2h, filter, wash with hexane 3 times, 60ml each time, and finally vacuum dry Get modified carrier.

[0431] Weigh 5 grams of magnesium compound, add it to the first solvent, then add non-meta...

Embodiment 2

[0437] Basically the same as Example 1, but with the following changes:

[0438] 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.

[0439] 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.

[0440] 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 performing in-situ loading on a non-metallocene complex and dipping a solution. The preparation method is simple and feasible, the ingredients capacity 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 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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IPC IPC(8): C08F10/00C08F4/658C08F4/646C08F4/645C08F4/649C08F4/02
Inventor 李传峰任鸿平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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