Olefin polymerization catalyst carrier, and preparation method and application thereof

A catalyst carrier and olefin polymerization technology, which is applied in the application field of preparing olefin polymerization catalysts, can solve the problems of unstable preparation process, poor carrier molding effect, carrier adhesion, etc.

Active Publication Date: 2014-05-14
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, and preparation method and application thereof
  • Olefin polymerization catalyst carrier, and preparation method and application thereof
  • Olefin polymerization catalyst carrier, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0037] According to a preferred embodiment of the present invention, the average particle diameter of the olefin polymerization catalyst carrier may be 10-100 microns, preferably 30-70 microns, and the particle size distribution is less than 1.2, preferably 0.7-0.9. In this preferred embodiment, the catalyst prepared from the olefin polymerization catalyst support is capable of yielding olefin polymers with higher bulk density. In the present invention, the average particle diameter and particle size distribution of the olefin polymerization catalyst carrier can be measured by using a Master Sizer 2000 laser particle size analyzer (manufactured by Malvern Instruments Ltd).

[0038] According to the present invention, the water contained in the carrier of the olefin polymerization catalyst comes from the trace amount of water carried by the synthesis raw materials and the reaction medium.

[0039] According to a second aspect of the present invention, the preparation method of ...

preparation example 1

[0059] This preparation example is used to illustrate the olefin polymerization catalyst carrier provided by the present invention and its preparation method.

[0060] In a 1.6L reactor, add 200mL of white oil, 8.0g (0.08mol) of magnesium chloride, 5g (0.02mol) of stearyl alcohol, and 100mL (1.7mol) of ethanol, and raise the temperature to 90°C while stirring. After reacting at constant temperature for 1 hour, the mixture was stirred at high speed (1600 rpm) for 30 minutes to disperse for emulsification. Add 25 mL (0.3 mol) of epichlorohydrin to the above emulsified product, react for half an hour, press filter, wash the press filter product 5 times with hexane, and vacuum dry to obtain olefin polymerization catalyst carrier Z1.

[0061] The average particle diameter (D50) of the olefin polymerization catalyst carrier Z1 is 35 microns, and the particle size distribution ((D90-D10) / D50) is 0.8. The particle morphology observed by optical microscope is as follows figure 1 show...

preparation example 2

[0063] This preparation example is used to illustrate the olefin polymerization catalyst carrier provided by the present invention and its preparation method.

[0064] In a 1.6L reactor, add 200mL of white oil, 8.0g (0.08mol) of magnesium chloride, 10.8g (0.04mol) of stearyl alcohol, and 28mL (0.48mol) of ethanol, and raise the temperature to 100°C while stirring. After constant temperature reaction for 0.5 hour, the mixture was stirred at high speed (1600 rpm) for 30 minutes to disperse for emulsification. Add 12.5 mL (0.16 mol) of epichlorohydrin to the above emulsified product, react for half an hour, press filter, wash the press filter product 5 times with hexane, and vacuum dry to obtain olefin polymerization catalyst carrier Z2.

[0065] The average particle diameter (D50) of the olefin polymerization catalyst carrier Z2 is 36 microns, and the particle size distribution ((D90-D10) / D50) is 0.75. The particle morphology observed by optical microscope is as follows figur...

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Abstract

The invention provides an olefin polymerization catalyst carrier, a preparation method thereof, and an application of the olefin polymerization catalyst carrier in the preparation of olefin polymerization catalysts. The olefin polymerization catalyst carrier contains magnesium halide with the general formula of MgXY, a compound with the general formula of R1OH, a compound with the general formula of R4OH and an oxirane compound, wherein X is halogen, Y is halogen, a C1-C14 alkyl group, a C1-C14 alkyloxy group, a C6-C14 aryl group or a C6-C14 aryloxy group, R1 is a C1-C8 alkyl group or a C3-C8 cycloalkyl group, R2 and R3 respectively independently represent H, and C1-C5 alkyl or halogenated alkyl groups, R4 is a C16-C24 alkyl or aralkyl group. The carrier has the advantages of good particle form, smooth and special-shaped particles-free surface, and increase of the bulk density of a polymerized product.

Description

technical field [0001] The invention relates to an olefin polymerization catalyst carrier, a method for preparing the olefin polymerization catalyst carrier, a carrier prepared by the method, and an application of the olefin polymerization catalyst carrier in preparing an olefin polymerization catalyst. Background technique [0002] It is well known that the performance of 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). Therefore, most of the catalysts currently used for olefin polymerization are prepared by loading titanium halide on magnesium chloride alcoholate. In order to obtain a spherical carrier, it can be prepared by methods such as spray drying, spray cooling, high-pressure extrusion, high-speed stirring, emulsifying machine method, and high-gravity rotating bed method. The alcoholate system is quenc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F10/00C08F4/02C08F4/649C08F4/645
Inventor 凌永泰夏先知刘月祥李威莅张纪贵谭扬彭人琪高富堂赵瑾高平乔素珍
Owner CHINA PETROLEUM & CHEM CORP
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