Supported non-metallocene catalyst, preparation method and application

A non-metallocene, supported technology, applied in the production of bulk chemicals and other directions, can solve the problems of small variation, limit the performance of non-metallocene catalysts, and limit the industrial large-scale application of supported non-metallocene catalysts, and achieve the preparation method. simple effect

Active Publication Date: 2013-03-13
CHINA PETROLEUM & CHEM CORP +1
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  • 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
For the composite support formed by porous carrier and magnesium compound, such as Chinese patent 200410066068.6, and the patent PCT / CN2005 / 001737 based on its application discloses a loading method of a highly active non-metallocene catalyst and a Supported non-metallocene olefin polymerization catalyst, its preparation method and application, due to the existence of alcohol in the system, it will have an adverse effect on the performance of the non-metallocene catalyst supported on it, and also limit the intrinsic performance of the non-metallocene catalyst fully use

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

[0099] 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 to obtain a magnesium compound solution; Contacting with the first non-metallocene complex to obtain a first mixed slurry; directly drying the first mixed slurry to obtain a composite carrier; reacting a chemical treatment agent selected from Group IVB metal compounds with the composite carrier , the step of obtaining a modified composite carrier; contacting the second 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 to obtain The step of the supported non-metallocene catalyst.

[0100] The magnesium compound will be specifically described below.

[0101] According to the present invention, the term "magnesium compound" refers to an organic or inorganic solid anhydrous magnesium-c...

Embodiment 1

[0331] The magnesium compound adopts anhydrous magnesium chloride, and the first and second non-metallocene complexes adopt 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. The IVB chemical treatment agent adopts titanium tetrachloride (TiCl 4 ), the second solvent adopts dichloromethane.

[0332] Weigh 5 grams of magnesium compound, add it to the first solvent, then add the first non-metallocene complex, dissolve completely at room temperature to obtain a magnesium compound solution, then add a heat-activated porous carrier, and stir for 2 hours to obtain the first The slurry is mixed, then uniformly heated to 90° C., and directly vacuum-dried to obtain a composite carrier.

[0333] Add the prepared composite carrier to the hexane so...

Embodiment 2

[0338] Basically the same as Example 1, but with the following changes:

[0339] Before reacting the chemical treatment agent with the composite support, the composite support is pretreated with a triethylaluminum co-chemical treatment agent to obtain a pretreated composite support.

[0340] That is, the composite carrier is added to the hexane solvent, and then the auxiliary chemical treatment agent triethylaluminum (concentration is 0.88mol / L, hexane solution) is slowly added dropwise, stirred at 60°C for 2 hours, filtered, washed with hexane for 3 times, 60ml each time, and finally vacuum-dried at 60°C to obtain a pretreated composite carrier. The molar ratio of the magnesium compound to the auxiliary chemical treatment agent is 1:0.2.

[0341] Supported non-metallocene catalysts are designated CAT-2.

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Abstract

The invention relates to a supported non-metallocene catalyst, a preparation method and an application. The supported non-metallocene catalyst is prepared by the steps of introducing a first non-metallocene complex in a magnesium compound solution, processing by a chemical treatment agent and then reacting with a second non-metallocene complex. The method of the invention has the characteristics of simple and feasible process, controllable content of non-metallocene compounds and substantial copolymerization effect and the like. 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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Patent Type & Authority Applications(China)
IPC IPC(8): C08F10/00C08F4/02C08F4/658C08F4/654C08F4/653C08F4/655C08F4/646C08F4/645C08F4/649
CPCY02P20/52
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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