Catalyst for propene polymerization

A propylene polymerization and catalyst technology, which is applied in the field of olefin polymerization catalysts, can solve the problems of unsatisfactory catalyst performance, unsatisfactory catalyst polymerization activity and hydrogen adjustment performance, unsatisfactory molecular weight distribution of catalysts, etc.

Active Publication Date: 2010-02-10
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

All have described in CN1436796A, CN1453298A the catalyst component and the catalyst that are used for the polymerization of olefins that this special polyester compound (A) obtains as internal electron donor, and point out that compound (A) can be with other electron donor The compound is used in combination to prepare the catalyst, but from the results of the examples given in the patent, the performance of the catalyst obtained by using the compound (A) in combination with another electron donor is not very ideal, especially the polymerization of the catalyst The activity and hydrogen adjustment performance are not very satisfactory
[0006] CN1718

Method used

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  • Catalyst for propene polymerization
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  • Catalyst for propene polymerization

Examples

Experimental program
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Effect test

Embodiment 1

[0034] In the reaction kettle that has been repeatedly replaced by high-purity nitrogen, 6.5 kg of anhydrous magnesium chloride, 132.7 liters of toluene, 5.4 liters of epichlorohydrin, and 16.9 liters of tributyl phosphate were added in sequence, at a stirring speed of 130 rpm and a temperature of 60 ° C , react for 2.5 hours, then add 1.89Kg phthalic anhydride, continue to react for one hour, cool down to -28°C, add 75.8 liters of titanium tetrachloride dropwise, gradually raise the temperature to 75°C, slowly add 2.2mol 2,4-pentanediol diphenyl Formate, gradually raise the temperature to 85°C, keep the temperature for one hour, filter off the mother liquor, wash with the inert diluent toluene and the organic solvent hexane several times, and then dry to obtain a solid containing magnesium / titanium.

[0035] Suspend the obtained magnesium / titanium-containing solid in toluene, add 1.4 liters of ethanol and 64 liters of titanium tetrachloride at -10°C, gradually raise the temper...

Embodiment 2

[0037] In the reaction kettle repeatedly replaced by high-purity nitrogen, 6.5 kg of anhydrous magnesium chloride, 132.7 liters of toluene, 5.4 liters of epichlorohydrin, and 16.9 liters of tributyl phosphate were successively added. React for 2.5 hours, then add 1.89Kg of phthalic anhydride, continue the reaction for one hour, cool down to -28°C, add 75.8 liters of titanium tetrachloride dropwise, gradually raise the temperature to 75°C, slowly add 3.3mol 2,4-pentanediol benzidine acid ester, gradually warming up to 85°C, keeping the temperature constant for one hour, filtering off the mother liquor, washing with the inert diluent toluene and the organic solvent hexane several times, and then drying to obtain a solid containing magnesium / titanium.

[0038] Suspend the magnesium / titanium-containing solid in toluene, add 1.4 liters of ethanol and 64 liters of titanium tetrachloride at -10°C, gradually raise the temperature to 110°C under stirring, and then add 3.3mol 2,4-pentane...

Embodiment 3

[0040] In the reaction kettle repeatedly replaced by high-purity nitrogen, 6.5 kg of anhydrous magnesium chloride, 132.7 liters of toluene, 5.4 liters of epichlorohydrin, and 16.9 liters of tributyl phosphate were successively added. React for 2.5 hours, then add 1.89Kg phthalic anhydride, continue the reaction for one hour, cool down to -28°C, add 75.8 liters of titanium tetrachloride dropwise, gradually raise the temperature to 75°C, slowly add 4.4mol 2,4-pentanediol benzidine acid ester, gradually warming up to 85°C, keeping the temperature constant for one hour, filtering off the mother liquor, washing with the inert diluent toluene and the organic solvent hexane several times, and then drying to obtain a solid containing magnesium / titanium.

[0041] Suspend the magnesium / titanium-containing solid in toluene, add 1.4 liters of ethanol and 64 liters of titanium tetrachloride at -10°C, gradually raise the temperature to 110°C under stirring, then add 2.2mol 2,4-pentanediol di...

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Abstract

The invention provides a catalyst for propene polymerization, which comprises the following components: A, a titanium-containing solid catalyst component, B, an alkylaluminium compound, and C, an organosilicone compound; and the invention also provides a method for preparing the titanium-containing solid catalyst component A. The titanium-containing solid catalyst component comprises titanium, magnesium, halogen, a surface modifier and a polyol ester compound with a special structure, or the polyol ester compound with the special structure which is taken as an electron doner and an electron doner compound with another structure are reasonably compatible with each other and are used in a catalyst system which is modified by the surface modifier to prepare a catalyst component and a catalystwith better comprehensive performance. Particularly, the catalyst provided by the invention shows high polymerization activity and stereospecificity when used for olefin polymerization, in particularthe propene polymerization; and simultaneously, the prepared polymer has wide molecular weight distribution and more facilitates the processing and application.

Description

technical field [0001] The invention relates to a catalyst for olefin polymerization, in particular to a catalyst for propylene polymerization and a method for preparing the solid component of the titanium-containing catalyst. Background technique [0002] Catalysts comprising titanium compounds and electron donor compounds supported on active magnesium halides are well known in the art. [0003] US Patent No. 4,544,717 discloses that the stereospecificity of a catalyst can be improved by adding an electron donor compound to a solid component containing a titanium compound. So far, many patents have disclosed a variety of internal electron donor compounds suitable for the preparation of Ziegler-Natta catalysts, and olefin polymerization catalysts containing these internal electron donor compounds. [0004] These internal electron donor compounds include: electron donor compounds of phthalates described in EP0045977, 1,3-diether compounds described in EP0361493 and EP0728724...

Claims

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Application Information

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IPC IPC(8): C08F4/654C08F10/06
Inventor 谭忠郭正阳严立安徐秀东高明智王军周凌李凤奎尹珊珊于金华王宇王迎任春红马永华张玲杨岭寇鹏刘萃莲
Owner CHINA PETROLEUM & CHEM CORP
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