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Internal electron donors, catalyst components, spherical-like catalysts for ethylene polymerization

An internal electron donor and ethylene polymerization technology, applied in the field of olefin polymerization, can solve the problems of unsatisfactory catalyst application, irregular catalyst shape, high catalyst production cost, etc., and achieve good hydrogen response ability, copolymerization performance, and good particle size distribution , the effect of low production cost

Active Publication Date: 2019-08-27
天津华聚化工科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, some of the above-mentioned electron donor compounds are very expensive, resulting in high catalyst production costs; some catalysts prepared by electron donors have irregular shapes, resulting in more fine powders produced in the polymerization process, so the application of such catalysts is not enough. satisfactory

Method used

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  • Internal electron donors, catalyst components, spherical-like catalysts for ethylene polymerization
  • Internal electron donors, catalyst components, spherical-like catalysts for ethylene polymerization
  • Internal electron donors, catalyst components, spherical-like catalysts for ethylene polymerization

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] 4.76 g (50 mmol) of anhydrous magnesium chloride, 75 ml of decane and 16.3 g (125 mmol) of isooctyl alcohol were heated to 130° C. and allowed to react for 3 hours to obtain a homogeneous solution. To this solution was added 15 mmol of 1H,1H,2H,2H-trifluoro-n-propyltriethoxysilane and stirred at 50°C for 2 hours to make 1H,1H,2H,2H-trifluoro-n-propyltriethoxysilane Oxysilane is dissolved in this solution. All the homogeneous solution obtained above was cooled to room temperature, and then added dropwise to 150 mL of titanium tetrachloride maintained at 0° C. within 1 hour while stirring. After completion of the dropwise addition, the temperature of the mixture was maintained at 0°C for 1 hour, then raised to 120°C over 2 hours with stirring, and maintained at this temperature for 2 hours. After 2 hours of reaction, the resulting solid was separated by hot filtration. The solid catalyst is fully washed with hexane and decane respectively until no precipitated titanium ...

Embodiment 2

[0040] 4.76 g (50 mmol) of anhydrous magnesium chloride, 75 ml of decane and 16.3 g (125 mmol) of isooctyl alcohol were heated to 130° C. and allowed to react for 3 hours to obtain a homogeneous solution. Add 15 mmol of 1H, 1H, 2H, 2H-pentafluoro-n-butyltriethoxysilane to this solution and stir at 50°C for 2 hours to make 1H, 1H, 2H, 2H-pentafluoro-n-butyltriethoxysilane Oxysilane is dissolved in this solution. All the homogeneous solution obtained above was cooled to room temperature, and then added dropwise to 150 mL of titanium tetrachloride maintained at 0° C. within 1 hour while stirring. After completion of the dropwise addition, the temperature of the mixture was maintained at 0°C for 1 hour, then raised to 120°C over 2 hours with stirring, and maintained at this temperature for 2 hours. After 2 hours of reaction, the resulting solid was separated by hot filtration. The solid catalyst is fully washed with hexane and decane respectively until no precipitated titanium c...

Embodiment 3

[0044] 4.76 g (50 mmol) of anhydrous magnesium chloride, 75 ml of decane and 16.3 g (125 mmol) of isooctyl alcohol were heated to 130° C. and allowed to react for 3 hours to obtain a homogeneous solution. Add 15 mmol of 1H, 1H, 2H, 2H-heptafluoro-n-pentyltriethoxysilane to the solution and stir at 50°C for 2 hours to make 1H, 1H, 2H, 2H-heptafluoro-n-pentyltriethoxysilane Oxysilane is dissolved in this solution. All the homogeneous solution obtained above was cooled to room temperature, and then added dropwise to 150 mL of titanium tetrachloride maintained at 0° C. within 1 hour while stirring. After completion of the dropwise addition, the temperature of the mixture was maintained at 0°C for 1 hour, then raised to 120°C over 2 hours with stirring, and maintained at this temperature for 2 hours. After 2 hours of reaction, the resulting solid was separated by hot filtration. The solid catalyst is fully washed with hexane and decane respectively until no precipitated titanium ...

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Abstract

The invention relates to an internal electron donor, a catalyst component and a sphere-like catalyst of a vinyl polymerization reaction. The structure of the internal electron donor is as shown in a formula (I). The catalyst component contains a magnesium complex, a titanium complex, a perfluoro-n-alkyl triethoxy silane and an organic alcohol compound. The catalyst for vinyl polymerization or copolymerization shows relatively high catalytic activity, relatively good hydrogen regulation sensitivity and relatively good copolymerization property and can be used for vinyl polymerization or copolymerization for producing polymers with high bulk density, narrow size distribution, low grain content and low wax content. The formula is as shown in the description.

Description

technical field [0001] The invention belongs to the field of olefin polymerization, and relates to ethylene polymerization and copolymerization catalysts, in particular to an internal electron donor for ethylene polymerization, a catalyst component, a quasi-spherical catalyst and a preparation method of the catalyst component. Background technique [0002] Since the advent of Ziegler-Natta catalysts for olefin polymerization, the research and development of high-performance olefin polymerization catalysts has been a hot issue in the field of polyolefin research. It is the goal of researchers to develop polyolefin catalysts with high catalytic activity, excellent hydrogen sensitivity, good copolymerization performance, uniform particle size distribution, less fine powder, low oligomer wax content, and stable and controllable production. There are many reports in the literature about the use of magnesium chloride-supported titanium-based Ziegler-Natta catalysts as catalysts fo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F10/02C08F4/646C08F4/658C08F110/02C08F210/16C08F210/14
Inventor 姜涛高金龙李健李明凯邵怀启陈延辉闫冰
Owner 天津华聚化工科技有限公司
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