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

A non-metallocene and catalyst technology, applied in the field of non-metallocene catalysts, can solve the problems of restricting the shape of polymer particles and the difficulty of controlling the shape of catalyst particles, and achieve the effect of simple preparation method

Inactive Publication Date: 2014-12-24
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These two methods use a magnesium compound support, and the particle morphology of the catalyst is difficult to control, which limits the particle morphology of the polymer obtained from the polymerization.
[0010] Patents 200910180603.3, 200910180604.8, 200910210989.8, 200910210986.4, 200910210985.X, 200910210990.0 disclose preparation methods of supported non-metallocene catalysts similar to the above-mentioned patents, all of which use magnesium compounds as carriers. The morphology of polymer particles obtained by this polymerization

Method used

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

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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 in the presence of alcohol to obtain a magnesium compound solution; adding a precipitate to the magnesium compound solution or drying the magnesium compound solution to obtain a magnesium compound carrier; contacting the magnesium compound carrier with a silicon compound of formula (X) and a chemical treatment agent selected from group IVB metal compounds to obtain a modified magnesium compound carrier and contacting the non-metallocene complex with the modified magnesium compound carrier in the presence of a second solvent to obtain 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-containing compound conventio...

Embodiment 1

[0381] The magnesium compound adopts anhydrous magnesium chloride, the first solvent adopts tetrahydrofuran, the alcohol adopts n-butanol, the silicon compound adopts tetraethoxy silicon, the chemical treatment agent of IVB group metal compound adopts titanium tetrachloride, the precipitant adopts hexane, non-acene The metal complex adopts the structure of The compound, the second solvent adopts dichloromethane.

[0382] Weigh 5g of anhydrous magnesium chloride, add the first solvent and alcohol, and dissolve completely at room temperature to obtain a magnesium compound solution. Add a precipitant to the magnesium compound solution to make it completely precipitate, filter, and wash 3 times with a precipitant. 60ml, uniformly heated to 60°C and vacuum-dried to obtain a magnesium compound carrier.

[0383]Add the prepared magnesium compound carrier into the hexane solvent, add the silicon compound dropwise within 10 minutes at room temperature and add the IVB group chemical t...

Embodiment 2

[0388] Basically the same as Example 1, but with the following changes:

[0389] Before the magnesium compound carrier is in contact with the silicon compound and the chemical treatment agent, the magnesium compound carrier is first treated with the auxiliary chemical treatment agent triethylaluminum.

[0390] That is, the magnesium compound carrier is added to the hexane solvent, and then the auxiliary chemical treatment agent triethylaluminum (concentration: 0.88mol / L, hexane solution) is slowly added dropwise, stirred at 60°C for 2 hours, filtered, and washed with hexane 3 times, each time with the same amount of solvent added before, and finally vacuum-dried at 60° C. to obtain a pretreated magnesium compound carrier. The molar ratio of the magnesium compound carrier calculated as Mg element to the auxiliary chemical treatment agent calculated as Al element is 1:0.2.

[0391] 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 and an application thereof. The supported non-metallocene catalyst has the characteristics of high catalytic activity and significant copolymerization effect. The invention also relates to an application of the supported non-metallocene catalyst in alkene homopolymerization / copolymerization. Alkene homopolymer / copolymer prepared by using the supported non-metallocene catalyst has the advantages of good particle morphology, narrow molecular weight distribution and reduced oligomer and fine powder content.

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 mid-to-late 1990s are also call...

Claims

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Application Information

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IPC IPC(8): C08F10/00C08F4/646C08F4/658C08F4/654C08F4/656C08F4/02
Inventor 李传峰任鸿平汪文睿易玉明郭峰杨爱武
Owner CHINA PETROLEUM & CHEM CORP
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