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A kind of catalyst component for olefin polymerization and preparation method thereof

A technology of olefin polymerization and catalyst, applied in the field of olefin polymerization, can solve the problems of poor shape of catalyst particles, poor shape of polymer particles, low apparent density, etc.

Active Publication Date: 2021-04-13
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the early days, the magnesium chloride carrier was often prepared by grinding, but the disadvantage was that the shape of the catalyst particles was poor, so the shape of the polymer particles obtained by catalysis was not good, there were many fine powders, and the apparent density was low.

Method used

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  • A kind of catalyst component for olefin polymerization and preparation method thereof
  • A kind of catalyst component for olefin polymerization and preparation method thereof
  • A kind of catalyst component for olefin polymerization and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] The synthesis of embodiment 1 compound benzoic acid (benzoyloxycarbonyl) (phenyl) methyl ester

[0061] Into a 250 ml three-neck flask after purging with nitrogen gas, 3.04 g of mandelic acid, 80 ml of tetrahydrofuran and 2.04 g of triethylamine were added, and stirred evenly. 2.80 g of benzoyl chloride dissolved in 30 ml of tetrahydrofuran solution was slowly added dropwise at low temperature, stirred at room temperature for 4 hours and then refluxed for 6 hours. Cool down, add 2.10 g of triethylamine, slowly dropwise add 2.80 g of benzoyl chloride dissolved in 40 ml of tetrahydrofuran solution, stir for 4 hours and then reflux for 8 hours. The reaction solution was cooled to room temperature, and an appropriate amount of water was added to dissolve the precipitate. Extracted three times with ether. The combined organic phases were dried overnight over anhydrous magnesium sulfate. After concentration under reduced pressure, the mixture solution of ether / ethanol (1:2...

Embodiment 2

[0063] The synthesis of embodiment 2 compound 4-n-propyl benzoic acid (4-n-propyl benzoyloxycarbonyl) (phenyl) methyl ester

[0064] Into a 250 ml three-neck flask purged with nitrogen, 3.04 g of mandelic acid, 80 ml of tetrahydrofuran and 4.10 g of triethylamine were added, and stirred evenly at room temperature. 7.28 g of 4-n-propylbenzoyl chloride dissolved in 50 ml of tetrahydrofuran solution was slowly added dropwise at low temperature, stirred for 6 hours and then refluxed for 16 hours. The reaction solution was cooled to room temperature, and an appropriate amount of water was added to dissolve the precipitate. Extracted three times with ether. The combined organic phases were dried overnight over anhydrous magnesium sulfate. After concentration under reduced pressure, a light yellow liquid was separated by column chromatography with a mixed solution of ether / ethanol (1:20), and dried in vacuo to obtain 4.65 g of the product (50% yield).

[0065] Product is detected,...

Embodiment 3

[0066] The synthesis of embodiment 3 compound 4-n-butylbenzoic acid (4-n-butylbenzoyloxycarbonyl) (phenyl) methyl ester

[0067] Into a 250 ml three-neck flask purged with nitrogen gas, 3.04 g of mandelic acid, 80 ml of tetrahydrofuran and 4.15 g of triethylamine were added, and stirred evenly. 7.84 g of 4-n-butylbenzoyl chloride dissolved in 60 ml of tetrahydrofuran solution was slowly added dropwise at low temperature, stirred at room temperature for 6 hours, and then refluxed for 20 hours. The reaction solution was cooled to room temperature, and an appropriate amount of water was added to dissolve the precipitate. Extracted three times with ether. The combined organic phases were dried overnight over anhydrous magnesium sulfate. After concentration under reduced pressure, a light yellow viscous liquid was separated by column chromatography with a mixed solution of ether / ethanol (1:20), and dried in vacuo to obtain 4.90 g of the product (yield 52%).

[0068] Product is d...

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Abstract

The invention discloses a catalyst component for olefin polymerization, which includes magnesium, titanium, halogen and an internal electron donor. During the preparation of the catalyst component, a compound represented by general formula I is added as a precipitation aid; , A selected from ‑(XR 1 R 2 ) n ‑and‑(XR 1 R 2 ) n (YR 3 ) m ‑, wherein X is a carbon atom or a silicon atom, Y is a nitrogen atom or a phosphorus atom, n=0~5, m=1~5; R 1 ~R 3 Can be the same or different, selected from hydrogen, substituted or unsubstituted C 1 ~C 30 Hydrocarbyl, substituted or unsubstituted C 2 ~C 30 Heterocyclyl, halogen, hydroxyl and substituted or unsubstituted C 1 ~C 30 The alkoxyl group, R 1 and R 2 Can be chained into rings; R 4 and R 5 Can be the same or different, selected from hydrogen, substituted or unsubstituted C 1 ~C 30 Hydrocarbyl and substituted or unsubstituted C 2 ~C 30 The heterocyclic group. The catalyst component of the invention and the catalyst prepared therefrom are used for olefin polymerization, have high activity and adjustable orientation ability, the hydrogen adjustment sensitivity of the catalyst is good, and the molecular weight distribution of the prepared polymer is wide.

Description

technical field [0001] The invention relates to a catalyst component for olefin polymerization and a preparation method thereof, a catalyst system for olefin polymerization, the application of the catalyst component and the catalyst system in olefin polymerization and an olefin polymerization method, belonging to the field of olefin polymerization . Background technique [0002] As we all know, polyolefin catalysts with magnesium, titanium, halogen and electron donors as basic components are prepared by using magnesium chloride, silicon oxide and other inorganic substances as carriers, and supporting transition metal compounds. In the early days, the magnesium chloride carrier was often prepared by grinding, but the disadvantage was that the shape of the catalyst particles was poor, so the polymer particles obtained by catalysis were not good in shape, with many fine powders and low apparent density. At present, people use more chemical methods, that is, the magnesium compo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F10/00C08F110/06C08F4/649
CPCC08F10/00C08F110/06C08F4/6494C08F2500/04C08F2500/15C08F2500/12
Inventor 王军高明智马晶刘海涛马吉星蔡晓霞陈建华胡建军李昌秀何世雄段瑞林
Owner CHINA PETROLEUM & CHEM CORP
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