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Olefin polymerization catalyst solid component and preparation method thereof, olefin polymerization catalyst and application thereof

A technology of olefin polymerization and solid components, which is applied to the preparation of solid components of olefin polymerization catalysts, the application field of olefin polymerization catalysts in olefin polymerization reactions, and can solve the problems of poor sensitivity to hydrogen adjustment

Active Publication Date: 2016-01-13
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the disadvantages of poor hydrogenation sensitivity of existing olefin polymerization catalysts, and to provide a method for preparing a solid component of an olefin polymerization catalyst with high hydrogenation sensitivity. Olefin polymerization catalyst solid component, a kind of olefin polymerization catalyst, and the application of this olefin polymerization catalyst in olefin polymerization reaction

Method used

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  • Olefin polymerization catalyst solid component and preparation method thereof, olefin polymerization catalyst and application thereof
  • Olefin polymerization catalyst solid component and preparation method thereof, olefin polymerization catalyst and application thereof
  • Olefin polymerization catalyst solid component and preparation method thereof, olefin polymerization catalyst and application thereof

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preparation example Construction

[0019] The preparation method of the olefin polymerization catalyst solid component provided by the invention comprises the following steps:

[0020] (1) reacting the magnesium-containing support with the first titanium compound, and adding an internal electron donor during one or more time periods before, during and after the reaction of the magnesium-containing support with the first titanium compound;

[0021] (2) The product obtained in step (1) is subjected to solid-liquid separation, and the solid product obtained by solid-liquid separation is contacted with the second titanium compound. The contact conditions include a temperature of -10°C to 120°C for a time greater than 4 Hour.

[0022] According to the present invention, the amount of the magnesium-containing carrier, the first titanium compound and the internal electron donor can be selected and changed within a relatively large range. The molar ratio of the first titanium compound to the internal electron donor is...

Embodiment 1

[0074] This example is used to illustrate the solid component of the olefin polymerization catalyst provided by the present invention and its preparation method, as well as the olefin polymerization catalyst and its application.

[0075] (1) Preparation of magnesium-containing carrier:

[0076] In a 1.6L reactor, add 200mL white oil, 8.0g (0.08mol) magnesium chloride, 3g (0.01mol) octadecyl alcohol, 95mL (1.6mol) ethanol, 9.8mL (0.08mol) 2,2-dimethoxy base propane, heated to 90°C with stirring. After reacting at a constant temperature for 1 hour, the mixture was stirred at a low speed (400 rpm) to disperse for 30 minutes for emulsification. Add 35 mL (0.45 mol) of epichlorohydrin to the emulsified product above, react for half an hour and press filter for 9 minutes. The press-filtered product was washed 5 times with hexane, and press-filtered after each wash. The total time of the press-filtering process was 20 minutes. Finally, the product was vacuum-dried to obtain the ma...

Embodiment 2

[0083] This example is used to illustrate the solid component of the olefin polymerization catalyst provided by the present invention and its preparation method, as well as the olefin polymerization catalyst and its application.

[0084] The preparation of the magnesium-containing carrier, the preparation of the solid component of the olefin polymerization catalyst and the polymerization of propylene were carried out according to the method of Example 1, except that the amount of hydrogen added during the polymerization of propylene was 6.5 L.

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Abstract

The invention provides an olefin polymerization catalyst solid component preparation method, an olefin polymerization catalyst solid component prepared through the method, an olefin polymerization catalyst, and an application of the olefin polymerization catalyst in olefin polymerization reactions. The olefin polymerization catalyst solid component preparation method comprises the following steps: 1, reacting a magnesium-containing carrier with a first titanium compound, and adding an internal donor before, during and after the above reaction; and 2, carrying out solid-liquid separation of products obtained in step 1, and allowing a solid product obtained through the solid-liquid separation to contact with a second titanium compound at -10-120DEG C for above 4h. The olefin polymerization catalyst solid component has a high hydrogen sensitivity, a good stereotactic ability and a high polymerization activity.

Description

technical field [0001] The invention relates to a preparation method of a solid component of an olefin polymerization catalyst, a solid component of an olefin polymerization catalyst prepared by the method, an olefin polymerization catalyst, and an application of the olefin polymerization catalyst in olefin polymerization. Background technique [0002] As is well known, a propylene polymerization catalyst generally includes a Ziegler-Natta procatalyst, an aluminum alkyl compound, an internal electron donor and an external electron donor. The performance evaluation indexes of Ziegler-Natta catalysts used in olefin polymerization are mainly hydrogen modulation sensitivity, polymerization activity and stereospecific ability. [0003] The structure of Ziegler-Natta catalyst is relatively complex, and there is still no qualitative conclusion on the composition and structure of its active center. When the active center of the catalyst changes, the properties of the polymer will d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F10/00C08F4/649C08F4/646C08F4/02
Inventor 凌永泰夏先知刘月祥赵瑾张纪贵李威莅高富堂谭扬高平彭人琪乔素珍
Owner CHINA PETROLEUM & CHEM CORP
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