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Preparation method of olefin polymerization catalyst component and prepared olefin polymerization catalyst component

An olefin polymerization and catalyst technology, applied in the field of olefin polymerization, can solve the problems of high cost and high price, and achieve the effects of narrow particle size distribution, reduced toluene content, high activity and stereospecificity

Pending Publication Date: 2022-05-03
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Patent CN1308355C reports a catalyst for olefin polymerization, its preparation process does not require low temperature, but its raw material is expensive organic magnesium, and the cost is high

Method used

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  • Preparation method of olefin polymerization catalyst component and prepared olefin polymerization catalyst component
  • Preparation method of olefin polymerization catalyst component and prepared olefin polymerization catalyst component
  • Preparation method of olefin polymerization catalyst component and prepared olefin polymerization catalyst component

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0105] In the reaction kettle that has been repeatedly replaced by high-purity nitrogen, add 10.86g of anhydrous magnesium chloride, 65g of toluene, 11.13g of epichlorohydrin, and 33.8g of tributyl phosphate in sequence, and keep stirring at 300RMP for 2 hours at a temperature of 60°C. . Then 3.8 g of phthalic anhydride were added and the temperature at 60° C. was maintained for a further 1 hour. Cool down to 40°C, then add a mixture of 89.8g decane and 5.7g T602, increase stirring to 500 RMP, and continue to maintain for 1 hour. Then the solution was cooled to 12° C., 142.1 ml of titanium tetrachloride was added dropwise, and continued for 1 hour after the addition was completed. The temperature was gradually raised to 80°C over 3 hours and held there for 1 hour. The mother liquor was filtered, and the solid was washed twice with hot toluene and then twice with hexane, and then dried to obtain a solid. Among them, the average particle diameter D50 of solid matter is 35.4 μ...

Embodiment 2

[0107] In the reaction kettle that has been repeatedly replaced by high-purity nitrogen, 10.86g of anhydrous magnesium chloride, 74.54g of toluene, 11.13g of epichlorohydrin, and 36.8g of tributyl phosphate were added in sequence, and kept stirring at 300 RMP for 2 Hour. Then 3.8 g of phthalic anhydride were added and the temperature at 60° C. was maintained for a further 1 hour. Cool the solution to 12°C, add 142.1ml of titanium tetrachloride dropwise, increase the stirring to 500 RMP, add a mixture of 5.7g of T602 and 109.1g of food grade No. 26 white oil, continue for 1 hour after the dropwise addition, and gradually heat up to 80°C. The mother liquor was filtered, and the solid was washed twice with hot toluene and then twice with hexane, and then dried to obtain a solid. Among them, the average particle diameter D50 of solid matter is 45.2 μm, and the SPAN value is 0.82.

Embodiment 3

[0109] In the reaction kettle that has been repeatedly replaced by high-purity nitrogen, 10.86g of anhydrous magnesium chloride, 57.22g of toluene, 11.13g of epichlorohydrin, and 36.8g of tributyl phosphate were sequentially added, and kept stirring at 300 RMP for 2 Hour. Then 2.85 g of T602 diluted with 3.8 g of phthalic anhydride and 17.32 g of toluene were added and the temperature was maintained at 60° C. for an additional hour. Cool the solution to 30°C, raise the stirring to 500 RMP, and start to drop 142.1ml of titanium tetrachloride, and a mixture of 124.1g of food grade No. 100 white oil and 2.85g of T602 respectively, and continue for 1 hour and 3 hours after the addition is completed The temperature was gradually raised to 80°C. The mother liquor was filtered, and the solid was washed twice with hot toluene and then twice with hexane, and then dried to obtain a solid. Among them, the average particle diameter D50 of solid matter is 60.4 μm, and the SPAN value is 0...

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Abstract

The invention provides a preparation method of an olefin polymerization catalyst component. The preparation method comprises the following steps: S1, preparing a magnesium-containing solution; s2, contacting the magnesium-containing solution, an inert dispersion medium and a titanium-containing compound to form a mixture; s3, in the presence of an auxiliary precipitation agent, a surfactant and an optional first electron donor compound, heating the mixture so as to precipitate a spherical or sphere-like solid; optionally, S4, enabling the spherical or sphere-like solid to be in contact with a second electron donor compound to obtain the olefin polymerization catalyst component, wherein at least one of a first electron donor compound and a second electron donor compound is used; and in the step S2, the contact temperature is not less than 0 DEG C. According to the preparation method, the cost is low, the energy consumption is greatly reduced, the precipitated spherical solid of the catalyst is intact in particle shape, narrow in particle size distribution and adjustable in average particle size, and the catalyst has relatively high activity and stereotactic ability.

Description

technical field [0001] The invention relates to the technical field of olefin polymerization, in particular to a method for preparing an olefin polymerization catalyst component and the prepared olefin polymerization catalyst component. Background technique [0002] Supported Ziegler-Natta catalysts have been extensively exploited because their morphology can be regulated by the support morphology, especially olefin polymerization catalysts supported on magnesium chloride supports. The preparation of catalysts with good particle morphology is beneficial to the operation of industrial devices, and has always been one of the keys to catalyst development. Currently, there are many technologies to prepare catalyst components for olefin polymerization with good morphology. [0003] One of them is to prepare the magnesium compound or complex solid first, then contact the titanium-containing compound to form a titanium- and magnesium-containing catalyst solid, and load the internal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F10/00C08F4/651C08F110/06C08F4/646
CPCC08F10/00C08F110/06C08F4/651C08F4/6465C08F2500/12C08F2500/16Y02P20/52
Inventor 岑为严立安付梅艳周俊领张晓帆林洁张军辉赵惠万真段瑞林
Owner CHINA PETROLEUM & CHEM CORP
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