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Catalyst component for alkene polyreaction and its catalyst

An olefin polymerization and catalyst technology, which is applied in the field of catalyst components and catalysts for olefin polymerization, can solve the problems of narrow polymer molecular weight distribution, unfavorable polymer development, and low catalyst catalytic activity.

Inactive Publication Date: 2004-11-03
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the catalysts for olefin polymerization prepared using the above-mentioned dibasic aromatic carboxylate compounds, 1,3-diether compounds containing two ether groups and dibasic aliphatic carboxylate compounds There are certain defects in practical application, such as the catalytic activity of catalysts using binary aromatic carboxylic acid ester compounds is low, and the molecular weight distribution of the obtained polymer is also narrow; the use of 1,3-diether compounds Although the catalyst has high activity and the sensitivity of the catalyst to hydrogen adjustment is also good, the molecular weight distribution of the obtained polymer is narrow, which is not conducive to the development of different grades of polymers

Method used

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  • Catalyst component for alkene polyreaction and its catalyst
  • Catalyst component for alkene polyreaction and its catalyst
  • Catalyst component for alkene polyreaction and its catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Example 1 Synthesis of 2,3-diisopropyl-1,4-butanediol dibenzoate

[0051] 1) Synthesis of 2,3-diisopropyl-1,4-butanediol

[0052] The mixture of 5.1 g of lithium aluminum hydride and 120 ml of diethyl ether was cooled to 0°C, and at this temperature, a mixture of 11 g of diethyl 2,3-diisopropyl-1,4-succinate and 60 ml of diethyl ether was slowly added dropwise. After the addition, the temperature was raised to reflux and maintained at reflux for 1 hour. Then, it was lowered to 0°C, and 5ml of 15% sodium hydroxide solution and 20ml of water were added dropwise. After rising to room temperature, react for half an hour. After filtering, washing, drying and concentrating the organic phase, 8.4 g of product (76%) was obtained by distillation under reduced pressure.

[0053] bp118℃ / 0.1mmHg; 1 H-NMR (δ, ppm, CDCl 3 ), 0.9(14H), 1.4(2H), 1.9(4H) and 3.7(2H).

[0054] 2) Synthesis of 2,3-diisopropyl-1,4-butanediol dibenzoate

[0055] 7.7 g of 2,3-diisopropyl-1,4-butanedio...

Embodiment 2

[0057] Example 2 2,3-Dimethyl-1,4-butanediol dibenzoate

[0058] According to a method similar to Example 1, 1) 2,3-dimethyl-1,4-butanediol bp95°C / 0.1mmHg was prepared; 1 H-NMR (δ, ppm, CDCl 3 ), 0.7-1.8(8H), 3.2-3.8(4H) and 4.8(2H).

[0059] 2) 2,3-Dimethyl-1,4-butanediol dibenzoate

[0060] 1 H-NMR (δ, ppm, CDCl 3 ), 1.1-1.6(8H), 5.0-5.5(4H), 7.3-8.2(10H).

Embodiment 3

[0061] Example 3 Preparation of 2,5-dimethyl-2,5-hexanediol dibenzoate

[0062] Add 30ml tetrahydrofuran and 0.09mol pyridine to 0.03mol 2,5-dimethyl-2,5-hexanediol, add 0.075mol benzoyl chloride under stirring, and heat to reflux for 4h. After cooling, add 20ml of saturated brine, extract with ethyl acetate, anhydrous Na 2 SO 4 Dry and remove solvent. Column chromatography gave 2,5-dimethyl-2,5-hexanediol dibenzoate as a colorless viscous liquid with a yield of 93%. 1 HNMR (TMS, CDCl 3 , ppm): δ1.6 (12H, s, methyl H), 2.0 (4H, s, methylene H), 7.4-8.0 (10H, m, benzene ring H).

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Abstract

The present invention provides one kind of catalyst for polymerization of olefin and the catalyst includes Mg, Ti, halogen and electron donor. The electron donor is at least one kind of dialcohol ester compound.

Description

technical field [0001] The invention relates to a solid catalyst component containing a glycol ester compound of a special structure and a preparation method thereof, a catalyst containing the solid catalyst component and the catalyst in CH 2 = Application in CHR olefin polymerization, where R is hydrogen or C 1 -C 6 The alkyl or aryl group, especially in the application of propylene polymerization, can obtain polymers with high yield, high isotacticity and wide molecular weight distribution. technical background [0002] It is well known that solid titanium catalyst components based on magnesium, titanium, halogen and electron donors can be used for CH 2 = CHR Olefin polymerization, especially in the polymerization of α-olefins with 3 or more carbon atoms, polymers with higher yield and higher stereoregularity can be obtained, wherein the electron donor compound is in the catalyst component One of the essential ingredients, and with the development of internal electron d...

Claims

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Application Information

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IPC IPC(8): C08F4/643C08F10/00
Inventor 刘海涛高明智杜宏斌张天一李昌秀马晶王新生尹茂平
Owner CHINA PETROLEUM & CHEM CORP
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