Olefin polymerization catalyst component preparation method and corresponding catalyst

A technology for olefin polymerization and catalyst, which is applied in the petrochemical field and can solve problems such as ligand compounds that have not yet been seen

Active Publication Date: 2015-11-25
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So far, there have been no reports on the direct application of such ligand compounds to the preparation of olefin polymerization catalysts and their use in olefin polymerization.

Method used

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  • Olefin polymerization catalyst component preparation method and corresponding catalyst
  • Olefin polymerization catalyst component preparation method and corresponding catalyst
  • Olefin polymerization catalyst component preparation method and corresponding catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] The synthesis of embodiment 1 compound 2,4-two (2,6-diisopropylphenylimino) pentane

[0049] In a three-neck flask, 1.00 g of acetylacetone, 40 ml of isopropanol and 0.2 ml of glacial acetic acid were added after purging with nitrogen, and stirred evenly at room temperature. At room temperature, a solution of 3.68 g of 2,6-diisopropylaniline in 50 ml of isopropanol was slowly added dropwise. After the addition was completed, the mixture was stirred for 1 hour and then heated to 100° C. for reflux for 26 hours. The reaction solution was concentrated under reduced pressure and separated by column chromatography to obtain 2.80 g of light yellow liquid (67% yield). 1 H-NMR (δ, ppm, TMS, CDCl 3 ):7.63~7.46(3H,m,ArH),3.25~3.38(6H,m,CH and CH 2 ),1.21~1.38(27H,m,CH 3 ),0.98~1.12(3H,m,CH 3 ); mass spectrometry, FD-massspectrometry: 418.

Embodiment 2

[0050] The synthesis of embodiment 2 compound 2,4-two (2,6-dimethylbenimino) pentane

[0051] In a three-necked flask, 1.00 g of acetylacetone, 80 ml of isopropanol and 0.2 ml of glacial acetic acid were added after purging with nitrogen, and stirred evenly at room temperature. At room temperature, a solution of 2.46 g of 2,6-dimethylaniline in 30 ml of isopropanol was slowly added dropwise. After the addition was completed, the mixture was stirred for 0.5 hours and then heated to 90° C. for reflux for 24 hours. The reaction solution was concentrated and separated by column chromatography to obtain 2.72 g of light yellow liquid (67% yield). 1 H-NMR (δ, ppm, TMS, CDCl 3 ):7.72~7.53(3H,m,ArH),3.25~3.31(2H,m,CH 2 ),2.31~2.54(12H,m,CH 3 ),1.20~1.35(3H,m,CH 3 ),0.98~1.12(3H,m,CH 3 ); mass spectrometry, FD-massspectrometry: 306.

Embodiment 3

[0052] The synthesis of embodiment 3 compound 2,4-two (2,4,6-trimethylbenimino) pentane

[0053] In a three-neck flask, 1.00 g of acetylacetone, 40 ml of absolute ethanol and 0.5 ml of glacial acetic acid were added after purging with nitrogen, and stirred evenly at room temperature. At room temperature, a solution of 2.73 g of 2,4,6-trimethylaniline in 50 ml of ethanol was slowly added dropwise. After the addition was completed, the mixture was stirred for 1 hour and then heated to 100° C. for reflux for 36 hours. The reaction solution was concentrated under reduced pressure and separated by column chromatography to obtain 2.07 g of product (62% yield). 1 H-NMR (δ, ppm, TMS, CDCl 3 ):7.86~7.66(4H,m,ArH),3.16~3.28(2H,m,CH 2 ),2.30~2.52(18H,m,CH 3 ),1.21~1.34(3H,m,CH 3 ),0.98~1.14(3H,m,CH 3 ); mass spectrometry, FD-massspectrometry: 334.

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Abstract

The present invention provides an olefin polymerization catalyst component preparation method and a catalyst. The method comprises: mixing a magnesium compound, an organic alcohol compound and an inert solvent, adding a co-precipitating agent, adding the alcohol compound obtained from the reaction to a titanium compound solution, carrying out filtration separation to obtain solid particles, adding the solid particles to the titanium compound solution again, stirring while carrying out a reaction, carrying out filtration separation, washing, and drying to obtain the catalyst component, wherein an internal electron donor compound including an imine compound represented by a general formula (I) is added in the optional step a-d. According to the present invention, with the application of the catalyst prepared through the method in the propylene polymerization reaction, the catalyst activity and the isotactic index of the obtained polymer are high, the catalyst activity attenuation is slow, and the molecular weight distribution of the obtained polymer is wide. The general formula I is defined in the specification.

Description

technical field [0001] The invention relates to a preparation method of an olefin polymerization catalyst component and a corresponding catalyst, which belong to the field of petrochemical industry. Background technique [0002] Olefin polymerization catalysts can be divided into three categories: traditional Ziegler-Natta catalysts, metallocene catalysts, and non-metallocene catalysts. For traditional Ziegler-Natta catalysts for propylene polymerization, with the development of electron donor compounds in the catalysts, polyolefin catalysts are constantly being updated. Catalyst research and development from the first generation of TiCl 3 AlCl 3 / AlEt 2 Cl system and the second generation of TiCl 3 / AlEt 2 Cl system, until the third generation of TiCl with magnesium chloride as the carrier, monoester or aromatic dibasic acid ester as the internal electron donor, and silane as the external electron donor 4 · ED · MgCl 2 / AlR 3 ·ED system and the newly developed catal...

Claims

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Application Information

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IPC IPC(8): C08F10/00C08F110/06C08F4/649
Inventor 王军高明智刘海涛张晓帆陈建华李现忠马晶蔡晓霞马吉星李昌秀胡建军
Owner CHINA PETROLEUM & CHEM CORP
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