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Catalyst components used for olefin polymerization, preparation method and application thereof, catalyst used for olefin polymerization and application thereof

An olefin polymerization and catalyst technology, which is applied to catalyst components and their application fields in olefin polymerization, can solve the problems of the difficulty of small particle size carriers and the poor regularity of large particle size carriers, and achieves improved repeatability, good Stereospecificity, effect of simple equipment

Active Publication Date: 2017-05-03
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method is difficult to prepare a smaller particle size carrier, and the regularity of the prepared large particle size carrier is poor (prone to irregular material)

Method used

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  • Catalyst components used for olefin polymerization, preparation method and application thereof, catalyst used for olefin polymerization and application thereof
  • Catalyst components used for olefin polymerization, preparation method and application thereof, catalyst used for olefin polymerization and application thereof
  • Catalyst components used for olefin polymerization, preparation method and application thereof, catalyst used for olefin polymerization and application thereof

Examples

Experimental program
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preparation example Construction

[0046] As mentioned above, the present invention provides a method for preparing a catalyst component for olefin polymerization, the method comprising: carrying out a contact reaction with a magnesium halide alcoholate carrier, a titanium compound and an internal electron donor, the internal donor The electron body contains an internal electron donor compound a, an internal electron donor compound b and an internal electron donor compound c, the internal electron donor compound a is a glycol ester compound, and the internal electron donor compound b is a diether compound , the internal electron donor compound c is a monocarboxylic acid ester; the preparation step of the magnesium halide alcoholate carrier includes: under pressure, the magnesium halide alcoholate melt passes through the structural unit with holes and the liquid Cooling medium contact.

[0047] According to the method of the present invention, preferably, the pressurizing conditions include: the pressure is 0.05...

Embodiment approach

[0053] According to a preferred embodiment of the present invention, the structural unit with holes is a mesh layer.

[0054] According to the method of the present invention, the adduct solid particles with equivalent particle morphology can be obtained by adopting the metal mesh with multi-layer large-aperture structure and the metal mesh with relatively small number of layers with small-aperture structure. When preparing small particle size (such as less than 30 μm) adduct carrier, it is preferable to use a metal mesh structure with 1-20 layers of small pore structure (such as pore size of 30-50 μm). It is preferred to use a metal mesh structure with 1-20 layers of relatively large aperture (eg, 65-200 μm aperture) structure.

[0055] According to a preferred embodiment of the present invention, the mesh layer includes 1-20 layers, preferably 2-8 layers; the thickness of each layer is 0.01-0.35mm, preferably 0.05-0.25mm, more preferably 0.1-0.15mm mm.

[0056] According t...

preparation Embodiment 1

[0154] In a 1L autoclave, add 500ml of silicone oil, 30g of magnesium chloride, and 50ml of ethanol, raise the temperature to 125°C with stirring, and stir at 125°C for 3 hours. The metal mesh (each layer thickness 0.1mm) is directly placed in 3L hexane pre-cooled to -30°C, the liquid is filtered off, the solid is washed three times with hexane, and dried in vacuum to obtain 50 grams of spherical magnesium chloride alcoholate solid particles S1, the alcohol / magnesium molar ratio is 2.6, and the characterization results are shown in Table 1.

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Abstract

The invention relates to the field of olefin polymerization, and particularly provides catalyst components used for the olefin polymerization and a preparation method and application thereof. The preparation method comprises the step that a magnesium halide alcohol adduct carrier, a titanium compound and an internal electron donor are subjected to contact reaction. The internal electron donor includes an internal electron donor compound a, an internal electron donor b and an internal electron donor compound c. The internal electron donor compound a is a polytrimethylene terephthalate compound, the internal electron donor compound b is a diether compound and the internal electron donor compound c is a monocarboxylic ester. The preparation of the magnesium halide alcohol adduct carrier comprises the step that under pressurization, a magnesium halide alcohol adduct melt penetrates through a structural unit with holes to make contact with a liquid cooling medium. The invention provides a catalyst used for the olefin polymerization and the application thereof. Compared with an existing produced catalyst, the catalyst prepared by the technology and synthesized by the carrier has good vertical structure directional property, and a basis is laid for developing polypropylene resin with high additional value.

Description

technical field [0001] The present invention relates to a method for preparing a catalyst component for olefin polymerization, and the catalyst component for olefin polymerization obtained by the method and its application in olefin polymerization; and a catalyst for olefin polymerization and its application Application in olefin polymerization. [0002] technical background [0003] Polypropylene spherical catalysts are widely used in polypropylene production equipment in the loop process, and have the advantages of high apparent density of polymers, regular particle shape, high catalyst polymerization activity, and high stereospecificity. Support technology is one of the technical cores of spherical catalysts. [0004] The use of magnesium chloride alcoholate spherical supports in the synthesis of polyolefin catalysts is well known in the field of polyolefin catalysts. At present, the preparation methods of magnesium chloride alcoholate spherical carrier include spray dry...

Claims

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Application Information

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IPC IPC(8): C08F10/00C08F4/654C08F4/651C08F4/02C08F4/649C08F4/646C08F4/645C08F10/06
Inventor 赵瑾夏先知高富堂刘月祥任春红谭扬李威莅凌永泰彭人琪
Owner CHINA PETROLEUM & CHEM CORP
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