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Catalyst component for ethylene polymerization reaction and catalyst

A technology of ethylene polymerization and catalyst, which is applied in the field of preparation of the catalyst component, can solve the problem of high fine powder content, etc., and achieve the effects of less fine powder content, simple preparation process and narrow particle size distribution

Active Publication Date: 2014-03-26
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the activity of the catalyst prepared by this method is high, the content of fine powder in the application of the catalyst is relatively high.

Method used

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  • Catalyst component for ethylene polymerization reaction and catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] (1) Weigh 24g of magnesium dichloride, add 195ml of tetrabutyl titanate, heat up to 140°C and stir to react until a transparent solution is formed. After the solution is cooled to close to room temperature, add 180ml of toluene, stir and mix evenly, and take out the obtained solution for later use.

[0048] (2) Take 10 ml of the solution obtained in step (1), add 20 ml of hexane to dilute, add 1.0 ml of isoamyl acetate, and stir at room temperature for 1 hour.

[0049] (3) Slowly add 10.5 ml of 3.0M dichloroethylaluminum solution to the reaction product in the second step with a constant pressure dropper at room temperature. After the addition is completed, raise the bath temperature to 45°C for 1 hour. The reaction was stirred at 60° C. for 4 hours to obtain a catalyst component suspension.

[0050] (4) Lower the temperature of the catalyst component suspension to room temperature, let it stand still, settle for 30 minutes, wash three times with hexane, the amount of h...

Embodiment 2

[0053] Change 1.0 milliliters of isoamyl acetate in the catalyst preparation step (2) to 0.5 milliliters, and other conditions are the same as in Example 1.

[0054] The evaluation conditions for the slurry polymerization of the catalyst are the same as in Example 1, and the polymerization results are shown in Table 1.

Embodiment 3

[0056] Change 1.0 milliliters of isoamyl acetate in the catalyst preparation step (2) to 0.2 milliliters, and other conditions are the same as in Example 1.

[0057] The evaluation conditions for the slurry polymerization of the catalyst are the same as in Example 1, and the polymerization results are shown in Table 1.

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Abstract

The invention relates to a catalyst component for ethylene polymerization reaction, a preparation method thereof and a catalyst. The catalyst component contains a magnesium compound, an oxygen-containing titanium compound, a fatty acid ester compound and a halogenation reagent. The catalyst has high polymerization activity, favorable hydrogen responsivity and narrow particle size distribution; and the obtained polymer particles are distributed in a centralized manner, the fine powder content is low, and the catalyst preparation process is simple.

Description

technical field [0001] The present invention relates to a titanium series catalyst component and its catalyst for olefin polymerization, especially ethylene polymerization or ethylene and alpha-olefin copolymerization, and a preparation method of the catalyst component. Background technique [0002] In recent years, the research work on the Mg-Ti Ziegler-Natta catalyst composition supporting the ethylene polymerization process has been quite in-depth. For this type of catalyst, it is firstly expected that the obtained catalyst has high enough polymerization activity and good hydrogen tuning performance; in addition, for To meet the continuous operation of industrial devices and increase productivity, it is hoped that the particle distribution of the obtained polymer is uniform, with a relatively narrow particle size distribution, less fine powder content, and increased bulk density. This requires the catalyst to have a good particle shape and a uniform particle size distribut...

Claims

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Application Information

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IPC IPC(8): C08F10/02C08F4/649C08F4/646C08F4/645
Inventor 吕新平周俊领郭子方王洪涛王世波黄廷杰邢宝泉周歆张长礼张磊
Owner CHINA PETROLEUM & CHEM CORP
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