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Catalyst component applied to vinyl polymerization reaction and catalyst thereof

A technology of ethylene polymerization and catalyst, which is applied in the field of catalyst components, and can solve the problems of excessive titanium-containing waste liquid, high catalyst cost, and unexplained influence on the hydrogen modulation sensitivity of compound electron donors.

Active Publication Date: 2012-12-05
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The related patent CN1699433 of the spherical catalyst applied to the polymerization of propylene uses titanium tetrachloride as the dealcoholization agent, and the esters used are compound electron donors of monoesters and diesters. Although the activity of the catalyst is significantly improved, the author does not Explain the effect of recombined electron donors on the sensitivity of hydrogen modulation; in addition, this patent is only applicable to propylene polymerization
In this patent, due to the use of a large amount of titanium tetrachloride as the dealcoholization agent, the cost of the catalyst is high and the resulting titanium-containing waste liquid is more, which increases the difficulty of post-treatment of the production process

Method used

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  • Catalyst component applied to vinyl polymerization reaction and catalyst thereof
  • Catalyst component applied to vinyl polymerization reaction and catalyst thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] (1) Preparation of catalyst components

[0043] In the reactor fully replaced by high-purity nitrogen, add 5.0g spherical carrier MgCl in sequence 2 2.6C 2 h 5 OH, 150ml of hexane, cooled down to -10°C with stirring, added dropwise 50ml of triethylaluminum in hexane solution (triethylaluminum: 1.2M) and 1ml of n-octyl acetate, 1ml of ethyl acetate, and then heated to 50 °C and maintain the reaction for 3 hours. Stirring was stopped and the mixture was left standing, the suspension was quickly separated into layers, the supernatant was sucked off, and the precipitate was washed twice with hexane at room temperature. Add 150ml of hexane, cool the system to 0°C, slowly add 8ml of titanium tetrachloride dropwise, then raise the temperature to 60°C, and react for 2 hours. Stop stirring, let it stand, the suspension will be layered quickly, and the supernatant will be pumped out. After the precipitate is washed twice with hexane, it will be transferred to a chromatography...

Embodiment 2

[0047] (1) Preparation of catalyst components

[0048] In the reactor fully replaced by high-purity nitrogen, add 4.0g spherical carrier MgCl in sequence 2 3.0C 2 h 5 OH, 150ml of hexane, cooled down to -10°C with stirring, added dropwise 60ml of triethylaluminum in hexane (triethylaluminum: 1.2M) and 1ml of n-octyl acetate, 1ml of ethyl benzoate, and then heated to 50°C, and maintain the reaction for 3 hours. Stirring was stopped and the mixture was left standing, the suspension was quickly separated into layers, the supernatant was sucked off, and the precipitate was washed twice with hexane at room temperature. Add 150ml of hexane, cool the system to 0°C, slowly add 6ml of titanium tetrachloride dropwise, then raise the temperature to 60°C, and react for 2 hours. Stop stirring, let it stand, the suspension will be layered quickly, and the supernatant will be pumped out. After the precipitate is washed twice with hexane, it will be transferred to a chromatography funnel ...

Embodiment 3

[0052] (1) Preparation of catalyst components

[0053] In the reactor fully replaced by high-purity nitrogen, add 5.0g spherical carrier MgCl in sequence 2 2.6C 2 h 5 OH, 150ml of hexane, cooled down to -10°C with stirring, added dropwise 50ml of triethylaluminum in hexane solution (triethylaluminum: 1.2M) and 1ml of n-octyl acrylate, 1ml of butyl acrylate, and then heated to 50 °C and maintain the reaction for 3 hours. Stirring was stopped and the mixture was left standing, the suspension was quickly separated into layers, the supernatant was sucked off, and the precipitate was washed twice with hexane at room temperature. Add 150ml of hexane, cool the system to 0°C, slowly add 8ml of titanium tetrachloride dropwise, then raise the temperature to 60°C, and react for 2 hours. Stop stirring, let it stand, the suspension will be layered quickly, and the supernatant will be pumped out. After the precipitate is washed twice with hexane, it will be transferred to a chromatograp...

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Abstract

The invention relates to a catalyst component applied to a vinyl polymerization reaction, a preparation method of the catalyst component and a catalyst thereof. The catalyst component comprises a magnesium-alcohol compound, a titanium compound, an organic aluminum compound, a long-carbon-chain monoester compound and a short-carbon-chain monoester compound. The catalyst has high activity and high hydrogen regulation sensitivity.

Description

technical field [0001] The present invention relates to a catalyst component for ethylene polymerization, a preparation method of the catalyst component and a catalyst thereof. More particularly, it relates to a catalyst component for ethylene polymerization containing two electron donors, a method for preparing the catalyst component and a catalyst thereof. Background technique [0002] The Ziegler-Natta type ethylene polymerization spherical catalyst prepared by using magnesium chloride ethanol carrier has been industrialized for many years, but due to the limitation of insufficient catalyst activity, this type of catalyst is mainly used in the gas phase polymerization process. If the activity of this type of catalyst can be improved so that it can be applied to the slurry polymerization process, spherical polyethylene pellets that are similar in shape to the catalyst, have good fluidity and bulk density, and do not need to be pelletized can be obtained. [0003] In the p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F10/02C08F4/649C08F4/645
Inventor 黄庭杨岭周俊领李秉毅寇鹏马永华王丽莎
Owner CHINA PETROLEUM & CHEM CORP
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