Catalyst component used for olefin polymerization, preparation method and applications thereof, catalyst used for olefin polymerization, and applications of catalyst

A technology of olefin polymerization and catalyst, which is applied in the field of catalyst components and its application in olefin polymerization reaction, can solve the problems of small particle size carrier difficulties, large particle size carrier poor regularity, etc., and achieve improved repeat stability, good Stereotropic, convenient and easy to change production

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 component used for olefin polymerization, preparation method and applications thereof, catalyst used for olefin polymerization, and applications of catalyst
  • Catalyst component used for olefin polymerization, preparation method and applications thereof, catalyst used for olefin polymerization, and applications of catalyst
  • Catalyst component used for olefin polymerization, preparation method and applications thereof, catalyst used for olefin polymerization, and applications of catalyst

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 carboxylic acid diol ester and phosphoric 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 to contact with the liquid cooling medium .

[0047] According to the method of the present invention, preferably, the pressurizing conditions include: the pressure is 0.05-1 MPa, more preferably 0.1-0.5 MPa, further preferably 0.2-0.5 MPa. By using the preferred pressure, the particle size and size distribution can be further optimized, and at the same time, the olefin polymerization catalyst prepared on the carrier has the advantage...

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

[0132] 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 belongs to the field of olefin polymerization, and more specifically provides a catalyst component used for olefin polymerization, and a preparation method and applications thereof. The preparation method comprises following steps: a magnesium halide alcohol adduct carrier, a titanium compound, and an internal electron donor are subjected contact reaction, wherein the internal electron donor contains a carboxylic acid diol ester and a phosphate, and the magnesium halide alcohol adduct carrier is prepared via following steps: a magnesium halide alcohol adduct melt is delivered through a structure unit provided with holes for contact with a liquid cooling medium under increased pressure. The invention also provides a catalyst used for olefin polymerization, and applications thereof. Compared with conventional catalysts, the catalyst synthesized from the carrier via the preparation method disclosed in the invention possesses following advantages: the catalyst possesses excellent steric directional catalytic performance, and foundation is provided for development of 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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Patent Type & Authority Applications(China)
IPC IPC(8): C08F10/00C08F10/06C08F4/02C08F4/649C08F4/651C08F4/654
Inventor 赵瑾夏先知高富堂刘月祥凌永泰李威莅谭扬任春红彭人琪
Owner CHINA PETROLEUM & CHEM CORP
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