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Catalyst component for olefin polymerization, preparation method and catalyst thereof

An olefin polymerization and catalyst technology, applied in the field of catalyst components and their preparation, can solve problems such as toxicity

Active Publication Date: 2017-09-29
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Catalysts prepared from phthalates as internal electron donors have high activity and isotacticity for olefin polymerization, but recent studies have found that phthalates are toxic to the reproductive system and liver , the European Union, the United States and other countries around the world have issued bans on such compounds to restrict their use

Method used

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  • Catalyst component for olefin polymerization, preparation method and catalyst thereof
  • Catalyst component for olefin polymerization, preparation method and catalyst thereof
  • Catalyst component for olefin polymerization, preparation method and catalyst thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0070] Preparation of magnesium compounds

[0071] Magnesium alkoxide preparation: In a 1L reactor equipped with a stirrer, reflux condenser, thermometer and burette, after fully replacing it with nitrogen, add 550 mL of ethanol, 10 mL of isopropanol, and 0.68 g of iodine into the reactor to dissolve. After stirring, the temperature was raised until reaching the reflux temperature of the reaction system. Then add magnesium powder 32g successively; React until no hydrogen is discharged. Then wash, filter and dry to obtain a bulk density of 0.25g / cm 3 , 147 g of magnesium alkoxides having an average particle diameter (D50) of 47.0 μm.

[0072] Preparation of catalyst components

[0073] Take 10g of the alkoxymagnesium carrier prepared above, 50mL of toluene and 2.5g of the electron donor compound A prepared above, and prepare a suspension; in a 300mL reaction kettle repeatedly replaced by high-purity nitrogen, add 40mL of toluene and four Titanium chloride 60mL, then add the...

Embodiment 2-4

[0077] The steps are the same as in Example 1, except that internal electron donor compounds B, C and D are used respectively. See Table 1 for the data.

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Abstract

The invention discloses a catalyst component for olefin polymerization. The catalyst component comprises titanium, halogen, magnesium and an internal electron donor compound as shown in the formula I; in the formula I, R1 and R2 are separately selected from substituted or unsubstituted C1-C20 hydrocarbyl groups; R3-R10 can be same or different and are separately selected from hydrogen and substituted or unsubstituted C1-C20 hydrocarbyl groups; R3-R10 can be optionally connected to form a ring or not. According to the invention, a novel internal electronic donor system is adopted to obtain the catalyst with excellent comprehensive property. When the catalyst is used for olefin polymerization, the catalyst is better in polymerization activity, and the obtained polymer is high in stacking density, high in isotacticity, wide in molecular weight distribution and high in melting index.

Description

technical field [0001] The invention relates to a catalyst component containing an electron donor compound with a specific structure and a preparation method thereof. The invention also relates to a catalyst containing said catalyst component and its use in olefin polymerization. Background technique [0002] Catalysts composed of solid titanium catalyst components based on magnesium, titanium, halogen and electron donors, known in the art as Ziegler-Natta catalysts, can be used for CH 2 = CHR olefin polymerization. Especially when it is used in the polymerization of α-olefins having 3 carbon atoms or more, a polymer with higher yield and higher stereoregularity can be obtained. It is well known that internal electron donor compounds are one of the essential components in Ziegler-Natta catalyst components. From the early disclosed monobasic carboxylic acid ester compounds, such as ethyl benzoate, to the widely used dibasic aromatic carboxylic acid ester compounds, such as...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F110/06C08F10/00C08F4/649C08F4/654
Inventor 张锐谭忠周奇龙宋维玮严立安徐秀东于金华尹珊珊李凤奎
Owner CHINA PETROLEUM & CHEM CORP
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