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Catalyst components for olefin polymerization reaction, and catalyst thereof

A technology for olefin polymerization and catalysts, which is applied in the field of catalyst components and catalysts for olefin polymerization reactions, and can solve the problems of insufficient isotactic index of polymers and unsatisfactory catalyst activity, etc.

Active Publication Date: 2011-11-09
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Chinese patent CN1453298A and CN1580034A disclose a kind of 1,3-diol ester compound, by using this 1,3-diol ester compound as electron donor in the olefin polymerization catalyst, can obtain the catalyst with excellent overall performance, in When used in the polymerization of propylene, it has high polymerization activity and stereospecificity, and the molecular weight distribution of the obtained polymer is also wide, but the activity of the catalyst is not satisfactory. Its stereospecificity, especially in the production of high melt index polymerization However, the isotactic index of the obtained polymer is not high enough and needs to be further improved.

Method used

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  • Catalyst components for olefin polymerization reaction, and catalyst thereof
  • Catalyst components for olefin polymerization reaction, and catalyst thereof
  • Catalyst components for olefin polymerization reaction, and catalyst thereof

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preparation example Construction

[0072] 2. Preparation of solid catalyst components

[0073] Preparation method A of solid catalyst component

[0074] Under nitrogen protection, add 4.8g of anhydrous magnesium chloride, 19.5g of isooctyl alcohol and 19.5g of decane solvent into a 500ml reactor equipped with a stirrer, heat to 130°C, react for 1.5 hours until magnesium chloride is completely dissolved, and add 1.1g Phthalic anhydride, continue to react at 130°C for 1 hour to obtain an alcoholate; cool the alcoholate to room temperature.

[0075] Under nitrogen protection, add the above alcoholate dropwise to 120ml of titanium tetrachloride solution precooled to -22°C, slowly raise the temperature to 100°C, add 10mmol of glycol ester compound, raise the temperature to 110°C for 2 hours, Filtrate while hot, add 120 ml of titanium tetrachloride, rise to 110 ° C for 1 hour, filter, wash the solid particles with anhydrous hexane 4 times, and dry to obtain a solid catalyst.

[0076] Preparation method B of solid c...

Embodiment 9

[0093] Embodiment 9: with embodiment 4, just toluene 60ml, TiCl 4 40ml, change the temperature to 110°C when treating the solid, and add toluene and TiCl for the first time 4 When adding 0.2mmol of di-n-butyl phthalate, followed by three times of toluene 60ml, TiCl 4 40ml, treated at 110°C for 0.5 hours, the obtained catalyst contained 10.9% of 3,5-heptanediol dibenzoate, of which the meso form accounted for 97.9%, contained 0.9% of dibutyl phthalate, and the catalyst activity was 68.6 kgPP / gcat, the isotactic index of the polymer is 98.8%.

[0094] Under the condition of hydrogenation of 9.6L, the melt index of the obtained polymer was 59.6g / 10min, and the isotactic index was 95.8%.

Embodiment 10

[0095] Embodiment 10: with embodiment 6, just toluene 60ml, TiCl 4 40ml, change the temperature to 110°C when treating the solid, and add toluene and TiCl for the first time 4 When adding 0.4mmol of 2-isopropyl-2-isoamyl-1,3-dimethoxypropane, the resulting catalyst contains 12.1% of 4-ethyl-3,5-heptanediol dibenzoate, Among them, the meso form accounts for 96.9%, contains 2.8% of 2-isopropyl-2-isoamyl-1,3-dimethoxypropane, the catalyst activity is 69.1kgPP / gcat, and the polymer isotactic index is 98.9%. .

[0096] Under the condition of hydrogenation of 9.6 L, the melt index of the obtained polymer was 71.5 g / 10 min, and the isotactic index was 95.5%.

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Abstract

The invention provides catalyst components for an olefin polymerization reaction, and a catalyst thereof. The catalyst components comprise magnesium, titanium, halogen and electron donor, wherein the electron donor comprises at least one selected from diol ester compounds. When the diol ester compound comprises a certain amount of an isomer having a fischer projection represented by (II), activity and stereospecificity of the catalyst are improved substantially, in particular, when a polymer with the high fusion index is produced, a isotactic index of the produced polymer is raised substantially.

Description

technical field [0001] The present invention relates to a solid catalyst component containing a glycol ester compound of special structure and its preparation method, as well as the catalyst containing the solid catalyst component and the application of the catalyst in olefin polymerization, especially in propylene polymerization The application of high yield, high isotactic and wide molecular weight distribution polymer can be obtained. technical background [0002] It is well known that solid titanium catalyst components based on magnesium, titanium, halogen and electron donors can be used in olefin polymerization, especially in the polymerization of α-olefins with 3 or more carbon atoms. Polymers with higher yield and higher stereoregularity, in which the electron donor compound is one of the essential components in the catalyst component, and with the development of the internal electron donor compound, the polyolefin catalyst is constantly updated, Currently, a large n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F10/00C08F4/649C08F4/645C08F10/02C08F10/06
CPCC08F10/00C08F110/06C08F4/651C08F2500/12C08F2500/15C08F4/64C08F4/643C08F4/654
Inventor 高明智李昌秀刘海涛张晓帆陈建华马晶蔡晓霞李现忠马吉星
Owner CHINA PETROLEUM & CHEM CORP
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