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Catalyst for olefine polymerizing reaction and its components

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 low isotacticity of polymers, narrow molecular weight distribution of polymers, unfavorable polymer development, etc.

Inactive Publication Date: 2005-08-03
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] 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, for example, the catalytic activity of the catalyst using binary aromatic carboxylate 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 activity of the catalyst is high, 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 polymer; The catalytic activity is still low, and the isotacticity of the obtained polymer is low when no external electron donor component is used

Method used

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  • Catalyst for olefine polymerizing reaction and its components
  • Catalyst for olefine polymerizing reaction and its components
  • Catalyst for olefine polymerizing reaction and its components

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] Synthesis of 2,4-pentanediol dibenzoate

[0054] (1) Preparation of 2,4-pentanediol

[0055] A mixture of 10g of 2,4-pentanedione and 30ml of methanol was added dropwise to a mixed solution of 2.5g of sodium borohydride, 0.1g of sodium hydroxide and 25ml of water at 0-10°C. After the addition, the solvent was removed under reduced pressure and extracted continuously with 40ml of ethyl acetate for 15h. The solvent was removed and column chromatography was performed to obtain 9.4 g of colorless liquid 2,4-pentanediol with a yield of 90%. IR spectrum at 3400cm -1 There is a strong absorption peak at 1700cm -1 There are no absorption peaks on the left and right, which proves that the reduction reaction is complete.

[0056] (2) Preparation of 2,4-pentanediol dibenzoate

[0057] Add 30ml tetrahydrofuran and 7.1g (0.09mol) pyridine to 2,4-pentanediol (3.1g, 0.03mol), add 10.5g (0.075mol) benzoyl chloride under stirring, and heat to reflux for 4h. After cooling, add 20ml...

Embodiment 2

[0060] Synthesis of (2S,4S)-(+)-2,4-pentanediol dibenzoate

[0061] (2S,4S)-(+)-2,4-Pentanediol 3.1g, 30ml tetrahydrofuran and 0.09mol pyridine were added to 0.03mol, 0.075mol benzoyl chloride was added under stirring, and heated to reflux for 4 hours. After cooling, add 20ml of saturated brine, extract with ethyl acetate, anhydrous Na 2 SO 4 Dry and remove solvent. Column chromatography gave 8.9 g of (2S,4S)-(+)-2,4-pentanediol dibenzoate as a colorless liquid, with a yield of 95%.

[0062] 1 H NMR (TMS, CDCl 3 , ppm): δ1.2~1.4 (8H, m, methyl H), 2.0~2.1 (2H, m, methylene H), 5.2~5.3 (2H, m, methine H of ester group), δ7.3~8.0 (10H, m, benzene ring H).

Embodiment 3

[0064] Synthesis of (2R,4R)-(+)-2,4-pentanediol dibenzoate

[0065] The method is the same as that of Preparation Example 2, except that (2R,4R)-(+)-2,4-pentanediol is used instead of (2S,4S)-(+)-2,4-pentanediol. 1 H NMR (TMS, CDCl 3 , ppm): δ1.3~1.4 (8H, m, methyl H), 2.0~2.1 (2H, m, methylene H), 5.2~5.3 (2H, m, methine H of ester group), 7.3-8.0 (10H, m, benzene ring H).

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Abstract

The present invention provides one kind catalyst component for CH2=CHR olifine polymerization, where R is H or alkyl radical or aryl radical of C1-C6. The catalyst component contains Mg, Ti, halogen and electron donor.

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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Patent Type & Authority Patents(China)
IPC IPC(8): C08F4/643C08F10/00
Inventor 高明智刘海涛李昌秀丁春敏杨燕涛李威莅王晓东李天益
Owner CHINA PETROLEUM & CHEM CORP
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