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Supported non-metallocene catalyst, its preparation method and application

A non-metallocene and catalyst technology, applied in the field of non-metallocene catalysts, can solve the problems of low catalytic activity, difficult to control the carrier molding process and particle shape, difficult to control the polymer shape, etc., and achieve the effect of simple preparation method

Active Publication Date: 2016-01-20
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this type of catalyst adopts vacuum drying or solvent precipitation during the carrier forming process, and it is difficult to control the carrier forming process and particle shape, so the shape of the polymer is difficult to control
[0009] Catalysts supported on anhydrous magnesium chloride show high catalytic activity in olefin polymerization, but such catalysts are very brittle and break easily in the polymerization reactor, resulting in poor polymer morphology
Silica-supported catalysts have good fluidity and can be used in gas-phase fluidized bed polymerization, but silica-supported metallocene and non-metallocene catalysts show low catalytic activity

Method used

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

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Experimental program
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no. 1 approach

[0165] In the context of the present invention, unless clearly defined otherwise, or the meaning is beyond the understanding of those skilled in the art, hydrocarbon or hydrocarbon derivative groups with more than 3 carbon atoms (such as propyl, propoxy, butyl , Butane, butene, butenyl, hexane, etc.) have the same meaning when the prefix "positive" is not prefixed. For example, propyl is generally understood as n-propyl, and butyl is generally understood as n-butyl.

[0166] The present invention relates to a method for preparing a supported non-metallocene catalyst, which includes the following steps: contacting a porous support optionally undergoing thermal activation treatment, a Grignard reagent, a halogenated reagent and a non-metallocene complex in the presence of a solvent, The step of obtaining the supported non-metallocene catalyst.

[0167] According to the present invention, the porous support, Grignard reagent, halogenated reagent and non-metallocene complex optionally...

Embodiment 1

[0301] The Grignard reagent is methylmagnesium chloride (MeMgCl), the solvent for dissolving the Grignard reagent is tetrahydrofuran, the halogenated reagent is chloro-n-butane, the porous carrier is silica, that is, silica gel, the model is ES757 of Ineos, non-metallocene The structure of the complex is compound of.

[0302] First, the silica gel is continuously calcined at 600°C under a nitrogen atmosphere for 4 hours to be thermally activated.

[0303] Weigh 3g of the non-metallocene complex and dissolve it in the halogenated reagent at room temperature to make a homogeneous solution for later use. The thermally activated silica gel is added to the Grignard reagent solution at room temperature, and stirred at room temperature to form a uniform slurry. The mixed solution of the non-metallocene complex and the halogenated reagent is added dropwise to the uniform slurry at room temperature, and the dropping time is 30 minutes. After the dropwise addition was completed, it was st...

Embodiment 2

[0307] The Grignard reagent uses ethyl magnesium chloride (EtMgCl), the solvent for dissolving the Grignard reagent uses ether, the halogenated reagent uses chloroethane, and the non-metallocene complex uses The porous carrier was changed to 955 type silica gel from Grace Company, and it was calcined continuously for 8 hours under a nitrogen atmosphere at 400°C for thermal activation.

[0308] Weigh 6.4 g of the non-metallocene complex, add it to the Grignard reagent solution at room temperature, and then add the thermally activated porous carrier at room temperature to make a slurry. Weigh the halogenated reagent and dissolve it in the solvent for dissolving Grignard reagent (accounting for half of the total) at room temperature to make a solution. The halogenated reagent solution is added dropwise to the aforementioned slurry at room temperature, and the dropping time is 30 minutes. After the dropwise addition was completed, it was stirred at room temperature for 2 hours. The...

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Abstract

The invention relates to a loaded non-metallocene catalyst and its preparation method. The loaded non-metallocene catalyst has the characteristics of simple and feasible preparation process, controllable non-metallocene component content, and substantial copolymerization effect, etc. The invention also relates to application of the loaded non-metallocene catalyst in olefin homopolymerization / copolymerization. Compared with the prior art, during application, the loaded non-metallocene catalyst has high olefin polymerization catalytic activity, small particle size and uniform distribution, and the obtained polymer has a high bulk density.

Description

[0001] This application is based on the research project of the National Eleventh Five-Year Support Plan. The project has received great attention and strong support from the Ministry of Science and Technology. Its goal is to form a new generation of polyolefin catalyst technology with independent intellectual property rights, and to improve the homogeneity of domestic related products, improve the grade of polyolefin products in my country, and promote its development. Development in the direction of diversification, serialization, specialization and high performance. Technical field [0002] The 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 mid- to late 1990s are also called "post-catalysts" olefin polymerization catalysts b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F10/00C08F4/658C08F4/653C08F4/654C08F4/646C08F4/645C08F4/02
Inventor 李传峰任鸿平郭峰阚林柏基业马忠林陈韶辉王亚明杨爱武
Owner CHINA PETROLEUM & CHEM CORP
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