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Catalyst component for olefinic polymerization and its catalyst

A technology of olefin polymerization and catalyst, which is applied in the field of catalyst components and catalysts, and can solve the problems of unsatisfactory catalyst performance and unsatisfactory catalyst polymerization activity, etc.

Active Publication Date: 2006-03-08
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese patents CN1436796A and CN1453298A all describe catalyst components and catalysts for olefin polymerization obtained with this special polyester compound (A) as an internal electron donor, and point out that compound (A) can be combined with other donors Electron donor compounds are used in combination to prepare catalysts, but from the results of the examples given in the patent, the performance of the catalyst obtained by using this compound (A) in combination with another electron donor is not very ideal, especially the catalyst The polymerization activity is not very satisfactory

Method used

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  • Catalyst component for olefinic polymerization and its catalyst
  • Catalyst component for olefinic polymerization and its catalyst
  • Catalyst component for olefinic polymerization and its catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1、9

[0050] Embodiment 1,9, the synthesis of 9-two (benzyl carboxymethyl) fluorene

[0051] (1) Synthesis of 9,9-dimethylolfluorene (see CN1141285A for the preparation method)

[0052] 9g (0.3mol) paraformaldehyde (vacuum dehydration 8h) was added 60ml dimethyl sulfoxide (DMSO, with CaH 2 Remove water) and the sodium ethylate solution after the reaction of 0.4gNa and 8ml absolute ethanol, and ice will be cooled. Under stirring, 100 ml of DMSO solution containing 16.6 g of fluorene (0.1 mol, dehydrated in vacuum for 8 h) was added within 30 seconds, and reacted for 10 min.

[0053] Add hydrochloric acid to terminate the reaction, and make the solution neutral, pour it into 300ml saturated brine, extract with ethyl acetate, separate the organic phase, wash twice with saturated brine, and dry over anhydrous sodium sulfate. The solvent was removed, and toluene was recrystallized to obtain 9,9-dimethylolfluorene as a white solid with a yield of 72%, m.p.142-145°C.

[0054] 1 H NMR (...

Embodiment 2

[0059] Embodiment 2, the synthesis of 2-isopropyl-2-isoamyl-1,3-propanediol benzhydryl carboxylate

[0060] (1) Synthesis of 2-isopropyl-5-methyl-2-hexenal (see CN1036846C for the preparation method).

[0061] 207g of isovaleraldehyde and 26ml of OH - Form Amberlite IRA910 resin (manufactured by Rohm & Hass) was heated to reflux. Remove the generated water with a water separator, stop the reaction after collecting about 26ml of water, and filter out the resin. Distill under reduced pressure and collect fractions at 85-90°C / 20mmHg.

[0062] (2) Synthesis of 2-isopropyl-5-methylhexanal

[0063] Add 70ml of ethanol, 1ml of saturated NaHCO to the 10g of 2-isopropyl-5-methyl-2-hexenal synthesized above 3 solution and 0.25 g of 10% Pd on carbon support. Access to N 2 , then pass into H 2 , means filled with graduated H 2 connected to the burette. The reaction was stirred at normal temperature and pressure until H 2 The absorption reaches the calculated value. Filter and u...

Embodiment 3、2

[0070] Embodiment 3,2, the preparation of 4-pentanediol dibenzoate

[0071] (1) Preparation of 2,4-pentanediol

[0072] 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 used to obtain 2,4-pentanediol as a colorless liquid with a yield of 90%.

[0073] (2) Preparation of 2,4-pentanediol dibenzoate

[0074] Add 30ml tetrahydrofuran and 0.09mol pyridine to 0.03mol 2,4-pentanediol, 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 or distillation under reduced pressure gave 2,4-pentanediol dibenzoate as a ...

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Abstract

This invention provides a catalys conponent and catalyst. Said catalyst comprises titanium, magnesium and at least three electron donor compounds a, b and c, in which is selected from mono-aliphatic-carboxylate or mono-aromatic-carboxylate compounds, b is selected from a special diatomic alkoxide compound, and c is selected from binary binary-aliphatic-carboxylate or binary-aromatic-carboxylate or b is ether compound. Advantages: high polymerization activity and stereospecificity when used for olefin polymerization, in particular for propylene polymerization, wide molecular weight distribution of obtained polymer and good shape of polymer granulars.

Description

technical field [0001] The present invention relates to a kind of catalyst component and catalyst for olefin polymerization, and it in alpha-olefin CH 2 = Use in polymerization of CHR and mixtures thereof, wherein R is hydrogen or an alkyl group of 1 to 12 carbon atoms. More particularly, it relates to a catalyst component and catalyst containing at least three electron donor compounds a, b and c and their use. technical background [0002] Catalysts comprising titanium compounds and electron donor compounds supported on active magnesium halides are well known in the art. [0003] US Patent No. 4,544,717 discloses that the stereospecificity of a catalyst can be improved by adding an electron donor compound (ie, an internal electron donor compound) to a solid component containing a titanium compound. So far, many patents have disclosed various internal electron donor compounds suitable for the preparation of Ziegler-Natta catalysts, and catalysts for olefin polymerization c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F10/00C08F4/645
Inventor 杜宏斌夏先知王新生张天一王军李昌秀高平尹茂平乔素珍王晓东王音
Owner CHINA PETROLEUM & CHEM CORP
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