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Olefin polymerization catalyst carrier, preparation method and application thereof

A catalyst carrier and olefin polymerization technology, which is applied in the field of olefin polymerization, can solve problems such as unstable preparation process, carrier adhesion, and poor carrier molding effect, and achieve the effect of good shape, high bulk density, and reduced adhesion

Active Publication Date: 2022-07-12
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the catalyst carrier prepared by this method has the disadvantages of unstable preparation process, easy carrier adhesion, and poor carrier molding effect.

Method used

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  • Olefin polymerization catalyst carrier, preparation method and application thereof
  • Olefin polymerization catalyst carrier, preparation method and application thereof
  • Olefin polymerization catalyst carrier, preparation method and application thereof

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preparation example Construction

[0023] According to the first aspect of the present invention, the present invention provides a preparation method of an olefin polymerization catalyst carrier, the preparation method comprising:

[0024] (1) mixing and emulsifying magnesium carboxylate, magnesium halide, alcohol compound, and optional inert liquid medium to obtain an emulsified product;

[0025] (2) contacting and reacting the emulsified product with an ethylene oxide compound to obtain a solid-liquid mixture containing an olefin polymerization catalyst carrier.

[0026] In the present invention, the general formula of the magnesium halide is MgXY, wherein X is halogen, Y is halogen, C 1 -C 14 Alkyl, C 1 -C 14 alkoxy, C 6 -C 14 aryl or C 6 -C 14 aryloxy.

[0027] Preferably, in the general formula MgXY, X is chlorine or bromine, and Y is chlorine, bromine, C 1 -C 5 Alkyl, C 1 -C 5 alkoxy, C 6 -C 10 aryl or C 6 -C 10 aryloxy.

[0028] In the present invention, C 1 -C 5 The alkyl group can be...

Embodiment 1

[0069] In a 0.6L reaction kettle, add 8.0g (0.08mol) magnesium chloride, 56mL (0.96mol) ethanol, 2.1g anhydrous magnesium acetate (0.015mol), heat up to 80°C under stirring, react at a constant temperature for 2 hours, and then add 38 mL (0.48 mol) of epichlorohydrin was reacted for 30 minutes and filtered under pressure. The filter-pressed product was washed 5 times with hexane, and finally the product was vacuum-dried to obtain an olefin polymerization catalyst carrier Z1.

[0070] The average particle diameter (D50) of the olefin polymerization catalyst carrier Z1 was 51 μm, and the particle size distribution ((D90-D10) / D50) was 0.8. The particle morphology observed by optical microscopy, such as figure 1 As shown, the particle morphology of the olefin polymerization catalyst carrier Z1 is relatively regular, the surface is smooth, and basically spherical, the particle size distribution is relatively concentrated, and there are basically no irregular particles.

Embodiment 2

[0072] In a 0.6L reactor, add 300mL white oil, 8.0g (0.08mol) magnesium chloride, 28mL (0.48mol) ethanol, 1g anhydrous magnesium acetate (0.007mol), heat up to 100°C under stirring, and react at constant temperature for 1 hour , then add 12.5 mL (0.16 mol) epichlorohydrin, react for 20 minutes, filter by pressure, wash the filter press product with hexane for 5 times, and finally vacuum dry the product to obtain the olefin polymerization catalyst carrier Z2.

[0073] The average particle diameter (D50) of the olefin polymerization catalyst carrier Z2 was 48 μm, and the particle size distribution ((D90-D10) / D50) was 0.7. It can be seen from the particle morphology observed by optical microscope that the particle morphology of the olefin polymerization catalyst carrier Z2 is relatively regular, the surface is smooth, basically spherical, the particle size distribution is relatively concentrated, and there are basically no irregular particles.

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Abstract

The invention relates to the field of olefin polymerization, and discloses an olefin polymerization catalyst carrier and a preparation method and application thereof. The preparation method of the olefin polymerization catalyst carrier comprises: (1) mixing and emulsifying magnesium carboxylate, magnesium halide, alcohol compound, and optional inert liquid medium to obtain an emulsified product; (2) mixing the emulsified product with a cyclic compound The oxyethane compound is contacted and reacted to obtain a solid-liquid mixture containing an olefin polymerization catalyst carrier. The carrier particles prepared by the method of the present invention have good shape and basically no irregular particles, the carrier can also improve the activity and stereospecificity of the olefin polymerization catalyst in the olefin polymerization reaction, and make the olefin polymer have a higher bulk density .

Description

technical field [0001] The present invention relates to the field of olefin polymerization, in particular, to an olefin polymerization catalyst carrier and a preparation method and application thereof. Background technique [0002] It is well known that the current catalysts for olefin polymerization are mainly prepared by supporting titanium halide on magnesium chloride alcoholate. This is because when the Ziegler-Natta catalyst supported by magnesium chloride alcoholate is used for the polymerization of olefins (especially propylene), its performance is obviously better than that of catalysts supported by other supports. In addition, spherical catalysts prepared with spherical carriers are more popular in the market. Spherical carriers can be prepared by methods such as spray drying, spray cooling, high pressure extrusion, high speed stirring, emulsifier method and supergravity rotating bed method. Patent documents such as WO99 / 44009 and US4399054 disclose that magnesium ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F10/00C08F110/06C08F4/02
CPCC08F10/00C08F110/06C08F4/022Y02P20/52
Inventor 凌永泰夏先知刘月祥李威莅任春红赵瑾高富堂刘涛陈龙谭扬
Owner CHINA PETROLEUM & CHEM CORP
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