Catalyst component for olefin polymerization, preparation method, catalyst and application thereof

A technology of olefin polymerization and catalyst, which is applied in the field of olefin polymerization catalyst components and its preparation, which can solve problems such as not being ideal enough to achieve the effects of low solvent content, inhibition of expansion, and low content of polymer powder fine powder

Inactive Publication Date: 2020-04-21
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] Some of the various catalysts mentioned above can only improve the performance of olefin polymerization catalysts in a certain aspect, although some can improve several performances, they are still not ideal

Method used

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  • Catalyst component for olefin polymerization, preparation method, catalyst and application thereof
  • Catalyst component for olefin polymerization, preparation method, catalyst and application thereof
  • Catalyst component for olefin polymerization, preparation method, catalyst and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] (1) Preparation of catalyst components

[0066] In a 250ml four-neck flask equipped with a temperature controller, a stirrer, and a reflux condenser, blown and protected by nitrogen, successively add 100ml of tetrahydrofuran (THF), 3.73 grams of magnesium chloride, and 0.89ml of TiCl under stirring. 4 , 0.18 g of N,N-dimethylacetamide, heated to 68° C. under stirring, and refluxed at this temperature for 2 hours to obtain the mother liquor. During this process, it has been kept in a nitrogen atmosphere (2 O);

[0067] In a 250ml four-neck flask equipped with a temperature controller, a stirrer, a reflux condenser, blown and protected by nitrogen, add 6.5 grams of silica gel (Cabot Corporation TS-610, particle diameter is 0.1~1 micron), Add the above mother liquor while stirring, and continue to reflux at 68° C. for 2 hours to completely disperse the silica gel in the mother liquor to obtain a slurry suspension. During this process, it has been kept in a nitrogen atmos...

Embodiment 2

[0072] (1) Preparation of catalyst components

[0073] In a 250ml four-necked flask equipped with a temperature controller, a stirrer, a reflux condenser, blown and protected by nitrogen, successively add 100ml tetrahydrofuran (THF) and 0.33 gram of magnesium powder (average particle diameter 80 ~100 microns) Then, slowly add 4ml of TiCl over 0.5 hours 4 , heated to 50° C., and stirred at constant temperature for 6 hours to obtain a solution of titanium trichloride, magnesium chloride and tetrahydrofuran. During this process, it has been kept in a nitrogen atmosphere (2 O);

[0074] In a 250ml four-necked flask equipped with a temperature controller, a stirrer, a reflux condenser, blown and protected by nitrogen, successively add 77ml tetrahydrofuran (THF), 3.79 grams of magnesium chloride, 33.3ml under stirring and let stand for 1 The supernatant of the above solution for 1 hour, 0.3 g of N,N-dimethylacetamide, was heated to 68° C. under stirring, and refluxed at this tempe...

Embodiment 3

[0080] (1) Preparation of catalyst components

[0081] In a 250ml four-necked flask equipped with a temperature controller, a stirrer, and a reflux condenser, blown and protected by nitrogen, successively add 100ml tetrahydrofuran (THF), 5.3 grams of magnesium chloride, and 2.1 grams of TiCl under stirring. 3 1 / 3AlCl 3 (TOSOH FINECHEM Corporation, TiCl3-AA), 0.38 g of N,N-dimethylacetamide, heated to 68° C. under stirring, and refluxed at this temperature for 2 hours to obtain the mother liquor. During this process, it has been kept in a nitrogen atmosphere (2 O);

[0082] In a 250ml four-necked flask equipped with a temperature controller, a stirrer, and a reflux condenser, blown and protected by nitrogen, add 7.2 grams of silica gel (Cabot Corporation TS-610, a particle size of 0.1 to 1 micron), Add the above mother liquor while stirring, and continue to reflux at 68° C. for 2 hours to completely disperse the silica gel in the mother liquor to obtain a slurry suspension. ...

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Abstract

The invention discloses a catalyst component for olefin polymerization, a preparation method of the catalyst component, a catalyst and application of the catalyst. The catalyst component comprises, byweight, 0.1 to 5 percent of titanium, 0.2 to 10.2 percent of magnesium, 15 to 40 percent of a solvent, 0.01 to 15 percent of an internal electron donor compound and 1 to 70 percent of an inorganic oxide carrier filler. The catalyst provided by the invention is prepared by a spray drying method, and the obtained catalyst component particles have low solvent content. The catalyst is used for catalyzing ethylene polymerization, and has the advantages of high catalyst activity, good hydrogen regulation performance, high polymer powder bulk density and low polymer powder fine powder content.

Description

technical field [0001] The invention relates to the field of ethylene and alpha olefin polymerization catalysts, and more specifically, to a catalyst component for olefin polymerization, a preparation method thereof, a catalyst and applications thereof. Background technique [0002] It is well known that the high-efficiency Ziegler-Natta catalyst for olefin polymerization consists of two parts: the main catalyst and the co-catalyst. The main catalyst is composed of a transition metal compound located in the fourth to eighth main groups of the periodic table, and the cocatalyst is a metal organic compound located in the first to third main groups of the periodic table. Usually, the main catalyst can be divided into two parts: an inert carrier and its supported active component. The main catalyst is generally prepared by reacting titanium halides with magnesium halides with lattice defects or by loading the reactants on an inert carrier. Wherein the magnesium compound is pre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F4/649C08F4/02C08F110/02
CPCC08F110/02C08F4/6495C08F4/022
Inventor 王如恩张彤瑄纪卫民李秉毅崔楠楠徐世媛
Owner CHINA PETROLEUM & CHEM CORP
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