Loaded non-metallocene catalyst and preparation method and application thereof

A non-metallocene and non-metallocene ligand 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

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

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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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  • Loaded non-metallocene catalyst and preparation method and application thereof

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preparation example Construction

[0090] The invention relates to a preparation method of a supported non-metallocene catalyst, comprising the following steps: dissolving a magnesium compound and a non-metallocene ligand in a solvent in the presence of alcohol to obtain a magnesium compound solution; making a porous carrier and the Mixing the magnesium compound solution to obtain a mixed slurry; adding a precipitant to the mixed slurry or drying the mixed slurry to obtain a composite carrier; and making the composite carrier and the silicon compound of formula (X) and selected The step of obtaining the supported non-metallocene catalyst by contacting with a chemical treatment agent of a group IVB metal compound.

[0091] The steps for obtaining the magnesium compound solution are specifically described below.

[0092] According to this procedure, the magnesium compound and the non-metallocene ligand are dissolved in an appropriate solvent (also referred to as a solvent for dissolving the magnesium compound) in...

Embodiment 1

[0423] The magnesium compound adopts anhydrous magnesium chloride, and the non-metallocene ligand adopts the structure For the compound, tetrahydrofuran was used as the solvent, ethanol was used as the alcohol, and silicon dioxide was used as the porous carrier, that is, silica gel, the model of which was ES757 from Ineos Company. The silicon compound adopts tetraethoxy silicon, and the IVB chemical treatment agent adopts titanium tetrachloride (TiCl 4 ).

[0424] Weigh 5 grams of magnesium compound, add it to the solvent, then add alcohol and non-metallocene ligands, completely dissolve at room temperature to obtain a magnesium compound solution, then add a porous carrier, stir for 2 hours to obtain a mixed slurry, and then uniformly heat to 90 °C, directly vacuum-dried to obtain a composite carrier.

[0425] Add the prepared composite carrier into the hexane solvent, add the silicon compound dropwise within 10 minutes at room temperature and add the IVB group chemical tr...

Embodiment 2

[0429] Basically the same as Example 1, but with the following changes:

[0430] Before the composite carrier is in contact with the silicon compound and the chemical treatment agent, the composite carrier is treated with the auxiliary chemical treatment agent triethylaluminum.

[0431] That is, the composite carrier was added to the hexane solvent, and then the auxiliary chemical treatment agent triethylaluminum (concentration: 0.88mol / L, hexane solution) was slowly added dropwise, stirred at 60°C for 2 hours, filtered, washed with hexane for 3 Each time, the amount of each solvent was the same as that of the previously added solvent, and finally vacuum-dried at 60° C. to obtain a supported non-metallocene catalyst. The molar ratio of the composite support in terms of Mg element to the auxiliary chemical treatment agent in terms of Al element is 1:0.2.

[0432] Supported non-metallocene catalysts are designated CAT-2.

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Abstract

The invention relates to a loaded non-metallocene catalyst and a preparation method thereof. The loaded non-metallocene catalyst has the characteristics of high catalytic activity, remarkable copolymerization effect and the like. The invention also relates to an application of the loaded non-metallocene catalyst in olefin homopolymerization / copolymerization; and a prepared olefin homopolymer / copolymer has the characteristics of good particle morphology, narrow molecular weight distribution, reduced contents of oligomers and fine powder and the like.

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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Patent Type & Authority Applications(China)
IPC IPC(8): C08F10/00C08F4/646C08F4/658C08F4/654C08F4/656C08F4/02
Inventor 李传峰任鸿平易玉明汪文睿郭峰杨爱武
Owner CHINA PETROLEUM & CHEM CORP
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