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Catalyst component used for olefin polymerization and catalyst thereof

A technology for olefin polymerization and catalyst, which is applied in the field of spherical catalyst components and catalysts, and can solve the problems of unsatisfactory hydrogen adjustment sensitivity, stickiness, and inability to meet polypropylene requirements.

Active Publication Date: 2008-04-23
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the composite spherical carrier is easily sticky during the preparation process, it is difficult to form spherical particles with a suitable particle size. The size of the disclosed spherical carrier is D50: 70-200, so the catalyst prepared by it is in use. When propylene is polymerized, the catalytic activity is only 406gPP / gcat, which is hardly satisfactory
[0006] In addition, when the above-mentioned catalysts are used in the polymerization of propylene, due to the unsatisfactory hydrogenation sensitivity, they cannot meet the requirements of industrial production of polypropylene.

Method used

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  • Catalyst component used for olefin polymerization and catalyst thereof
  • Catalyst component used for olefin polymerization and catalyst thereof
  • Catalyst component used for olefin polymerization and catalyst thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] 1. Preparation of spherical magnesium chloride adduct:

[0065] In a 1L autoclave, add 110ml of white oil, 220ml of silicone oil, 15g of magnesium chloride, 28ml of ethanol and 4ml of dimethoxypropane, raise the temperature to 125°C with stirring, and stir at 125°C for 3 hours. In 3 L of hexane cooled to -30°C, the liquid was filtered off, the solid was washed three times with hexane, and dried in vacuo to obtain 30.3 g of spherical magnesium chloride adducts with an average particle size of 50 microns.

[0066] 2. Preparation of spherical catalyst components

[0067] In a 300ML glass reaction bottle, add 100ml of titanium tetrachloride, cool to -20°C, add 8 grams of the spherical magnesium chloride adduct of Example 1, heat up to 100°C, add diphthalic acid di 1.5 ml of isobutyl ester, the liquid was filtered off, washed twice with titanium tetrachloride, washed three times with hexane, and dried in vacuo to obtain a spherical catalyst.

[0068] 3. Propylene polymeriz...

Embodiment 2

[0071] Catalyst is with embodiment 1, and propylene polymerization is with embodiment 1 except hydrogen 5.0L

Embodiment 3

[0073] Except that the dimethoxypropane of 4ml is replaced by the dimethoxypropane of 6ml in the preparation of spherical magnesium chloride adduct among the embodiment 1, obtain spherical carrier 31 grams, average particle diameter 61 microns, all the other are the same as embodiment 1. The test results are shown in Tables 1 and 2.

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Abstract

The present invention relates to one kind of catalyst component for olefin polymerization. The catalyst component is the resultant produced through contacting at least one Ti compound and the magnesium halide adduct in the general expression of MgX2-mROH-nE-pH2O, where, X is Cl or Br, R is C1-C12 alkyl group, C3-C10 cycloalkyl group or C6-C10 aryl group, E is dialkoxy compound, m is 1-5, n is 0.005-1.0, and p is 0-0.8. It is applied in polymerization of olefin, especially propylene, and has very high catalyzing activity, high tacticity, excellent hydrogen regulating sensitivity, and capacity of obtaining polymer in good granular form. It is especially suitable for use in industrial polypropylene production.

Description

technical field [0001] The present invention relates to a kind of spherical catalyst component and catalyst for olefin polymerization, and it in α-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 specifically, it relates to a catalyst containing a reaction product of a spherical adduct of a ternary component of magnesium halide, alcohol and C, C-dihydrocarbyloxy compound and a titanium compound and its application. technical background [0002] The preparation of Ziegler-Natta catalysts by supporting titanium compounds and electron donor compounds on active magnesium halides is well known in the prior art. [0003] The active magnesium halide described therein often adopts the adduct of magnesium halide and alcohol, which is used as a carrier to react with titanium halide and electron donor compound to obtain a spherical catalyst, which is used for olefin polymerization, especially propyle...

Claims

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Application Information

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IPC IPC(8): C08F10/00C08F4/645
CPCY02P20/52
Inventor 夏先知刘月祥张天一王新生陈颖高平乔素珍尹茂平彭人琪
Owner CHINA PETROLEUM & CHEM CORP
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