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A kind of olefin polymerization catalyst component and its preparation method and application

An olefin polymerization and catalyst technology, which is applied in the field of catalyst components for olefin polymerization and its preparation, can solve problems such as complicated preparation process, and achieve the effects of simple preparation method, good catalytic effect, high activity and orientation ability

Active Publication Date: 2015-08-19
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the preparation process of the catalyst is cumbersome, and the catalyst precursor needs to be prepared first, and then treated with the silane compound

Method used

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  • A kind of olefin polymerization catalyst component and its preparation method and application
  • A kind of olefin polymerization catalyst component and its preparation method and application
  • A kind of olefin polymerization catalyst component and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] In a reaction flask, under nitrogen protection and anhydrous conditions, add 9,9-dimethylolfluorene (5.7 g), triethylamine (5 ml) and tetrahydrofuran (80 ml), and cool in an ice-water bath for 1 hour A mixed solution of diallyldichlorosilane (2.3 g) and tetrahydrofuran (40 ml) was added dropwise. After the addition, the mixture was reacted at room temperature for 12 hours, and heated under reflux for 3 hours. Then add saturated aqueous ammonium chloride solution, stir, and separate the organic phase. Extracted three times with ether, and combined the organic phases. Wash with water and saturated sodium chloride solution successively, dry with anhydrous sodium sulfate, and remove the low boiling point solvent by rotary evaporation. The residue was separated and purified by column chromatography to obtain 1.7 g of product 2,2-diallyl-5,6,7,8-dibenzo-1,3,2-dioxaspirosilane. 1 H-NMR (δ, ppm, TMS, CDCl 3 ): 7.25~8.17 (8H, m, ArH), 5.73 (2H, m, =CH), 5.02 (4H, m, =CH 2 ),...

Embodiment 2

[0040] In a reaction flask, under nitrogen protection and anhydrous conditions, add 2,4-pentanediol (5.2 g), triethylamine (10 ml) and tetrahydrofuran (100 ml), and drop them within 1 hour under cooling in an ice-water bath. Add a mixed solution of diallyldichlorosilane (4.6 g) and tetrahydrofuran (40 ml), react at room temperature for 12 hours after the addition, and then heat to reflux for 8 hours. After the temperature dropped to room temperature, a saturated ammonium chloride aqueous solution was added, stirred, and the organic phase was separated. Extracted three times with ether, and combined the organic phases. Wash with water and saturated sodium chloride solution successively, dry with anhydrous sodium sulfate, and remove the low boiling point solvent by rotary evaporation. The residue was separated and purified by column chromatography to obtain 2.6 g of the product 2,2-diallyl-4,6-dimethyl-1,3,2-dioxacyclohexasilane. 1 H-NMR (δ, ppm, TMS, CDCl 3 ): 5.72(2H,m,=CH)...

Embodiment 3

[0042] In a reaction flask, 3-isobutyl-2,4-pentanediol (3.2 g), anhydrous ether (100 ml) and diallyldichlorosilane (2.0 g), after stirring and dissolving, potassium tert-butoxide (2.2 g) was added in batches within 1 hour, kept at room temperature for 8 hours after the addition, and then heated to reflux for 4 hours and cooled to room temperature. Add saturated aqueous ammonium chloride solution, stir, and separate the organic phase. Extracted three times with anhydrous ether, combined the organic phases, washed thoroughly with saturated sodium chloride, dried with anhydrous sodium sulfate, and distilled off the low boiling point substances under reduced pressure. The residue was separated by column chromatography to obtain 1.0 g of the product 2,2-diallyl-5-isobutyl-4,6-dimethyl-1,3,2-dioxacyclohexasilane. 1 H-NMR (δ, ppm, TMS, CDCl 3 ): 5.72(2H,m,=CH), 5.00(4H,m,=CH 2 ), 3.40 (2H, s, OCH), 1.54~1.82 (6H, m, CH and SiCH 2 ), 1.20~1.36 (8H, m, CH 2 and CH 3 ), 0.96~1.10 ...

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Abstract

The invention provides an olefin polymerization catalyst component, comprising magnesium, titanium, halogen and an internal electron donor, wherein the internal electron donor comprises a novel silane compound shown in a formula (I), wherein R1, R2, R3, R4, R5, A and n in the formula are defined in the specification, preferably, the internal electron donor of the catalyst component also comprises one or more of a glycol acid ester compound, a diether compound, a binary aliphatic carboxylic acid ester compound and an aromatic acid ester compound. The invention also relates to preparation and application methods of the olefin polymerization catalyst component. The preparation method of the catalyst component disclosed by the invention is simple, feasible and diversified. The catalyst component reflects high catalyst activity and long activity cycle in application of propylene polymerization reaction, and the obtained polymer is high in isotacticity and wide in molecular weight distribution.

Description

technical field [0001] The invention relates to the field of catalysts, in particular to a catalyst component for olefin polymerization and its preparation method and application Background technique [0002] Since the 1950s, the development of catalysts for propylene polymerization has started 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 · In the ED system, the catalytic polymerization activity of the catalyst and the isotacticity of the obtained polypropylene have been greatly improved. In the prior art, the titanium catalyst system used for propylene polymerization mostly uses magnesium, titanium, halogen and electron donor as basic components, and the internal electron donor compound i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F10/00C08F4/646C08F4/649C08F4/658C08F10/06
Inventor 王军高明智刘海涛马晶陈建华李现忠马吉星张晓帆蔡晓霞胡建军李昌秀段瑞林
Owner CHINA PETROLEUM & CHEM CORP
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