Olefin polymerization catalyst carrier, preparation method and applications thereof

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

Active Publication Date: 2020-04-28
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 applications thereof
  • Olefin polymerization catalyst carrier, preparation method and applications thereof
  • Olefin polymerization catalyst carrier, preparation method and applications thereof

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preparation example Construction

[0023] According to the first aspect of the present invention, the present invention provides a kind of preparation method of olefin polymerization catalyst carrier, and this preparation method comprises:

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

[0025] (2) contacting and reacting the emulsified product with an oxirane 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 a halogen, Y is a halogen, C 1 -C 14 Alkyl, C 1 -C 14 Alkoxyl, C 6 -C 14 Aryl or C 6 -C 14 of aryloxy groups.

[0027] Preferably, in the general formula MgXY, X is chlorine or bromine, Y is chlorine, bromine, C 1 -C 5 Alkyl, C 1 -C 5 Alkoxyl, C 6 -C 10 Aryl or C 6 -C 10 of aryloxy groups.

[0028] In the present invention, C 1 -...

Embodiment 1

[0069] In a 0.6L reactor, add 8.0g (0.08mol) of magnesium chloride, 56mL (0.96mol) of ethanol, 2.1g of anhydrous magnesium acetate (0.015mol), raise the temperature to 80°C under stirring, react at constant temperature for 2 hours, and then add 38mL (0.48mol) of epichlorohydrin was reacted for 30 minutes and then press-filtered. The press-filtered product was washed 5 times with hexane, and finally the product was vacuum-dried to obtain the 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. Particle morphology observed by optical microscopy, such as figure 1 As shown, the particle shape of the olefin polymerization catalyst carrier Z1 is relatively regular, the surface is smooth, basically spherical, the particle size distribution is relatively concentrated, and there are basically no abnormal particles.

Embodiment 2

[0072] In a 0.6L reaction kettle, 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 12.5mL (0.16mol) epichlorohydrin, press filter after reacting for 20 minutes, wash the press filter product with hexane for 5 times, and finally vacuum dry the product to obtain 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. From the particle morphology observed by optical microscope, it can be seen that the particle shape 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 abnormal particles.

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Abstract

The invention relates to the field of olefin polymerization, and discloses an olefin polymerization catalyst carrier, a preparation method and applications thereof. The preparation method of the olefin polymerization catalyst carrier comprises the following steps: (1) mixing and emulsifying magnesium carboxylate, magnesium halide, an alcohol compound and an optional inert liquid medium to obtain an emulsified product; and (2) carrying out a contact reaction on the emulsified product and an ethylene oxide compound to obtain a solid-liquid mixture containing the olefin polymerization catalyst carrier. The carrier prepared by the method has good particle morphology, basically has no special-shaped particles, and can also improve the activity and the the stereotactic ability of the olefin polymerization catalyst in an olefin polymerization reaction, so that the olefin polymer has high bulk density.

Description

technical field [0001] The invention relates to the field of olefin polymerization, in particular to an olefin polymerization catalyst carrier and its preparation method and application. Background technique [0002] As we all know, the catalysts currently used for olefin polymerization are mainly prepared by loading titanium halide on magnesium chloride alcoholate. This is because the performance of the Ziegler-Natta catalyst supported by magnesium chloride alcoholate is significantly better than that of catalysts supported by other supports when it is used for the polymerization of olefins (especially propylene). 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 high-gravity rotating bed method. Patent documents such as WO99 / 44009 and US4399054 disclose that magnesium chlorid...

Claims

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Application Information

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Patent Type & Authority Applications(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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