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A kind of olefin polymerization catalyst solid component and olefin polymerization catalyst and application thereof

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

Active Publication Date: 2016-12-21
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 in order to overcome the defect that existing olefin polymerization catalyst hydrogen adjustment sensitivity is relatively poor, and provides a kind of olefin polymerization catalyst solid component with higher hydrogen adjustment sensitivity, a kind of olefin polymerization catalyst, and the Application of Olefin Polymerization Catalyst in Olefin Polymerization

Method used

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  • A kind of olefin polymerization catalyst solid component and olefin polymerization catalyst and application thereof
  • A kind of olefin polymerization catalyst solid component and olefin polymerization catalyst and application thereof
  • A kind of olefin polymerization catalyst solid component and olefin polymerization catalyst and application thereof

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preparation example Construction

[0018] According to the present invention, above-mentioned olefin polymerization catalyst solid component can be made by various methods, preferably, the preparation method of described olefin polymerization catalyst solid component comprises the following steps:

[0019] (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;

[0020] (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.

[0021] According to the present invention, the amount of the magnesium-containing carrier, the first titanium compound and the internal electron donor can be selected an...

Embodiment 1

[0073] 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.

[0074] (1) Preparation of magnesium-containing carrier:

[0075] 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, an olefin polymerization catalyst and applications of the catalyst in olefin polymerization reactions. The olefin polymerization catalyst solid component comprises titanium, magnesium and an internal electron donor. In the infrared spectrum of the olefin polymerization catalyst solid component, the transmissivity difference value between the characteristic absorption peak at 1683+ / -5 cm<-1> and the characteristic absorption peak at 1752+ / -5 cm<-1> is not less than 12%, a double peak exists at 715-742 cm<-1> and the transmissivity of the peak at the high wave number in the double peak is lower than the transmissivity of the peak at the low wave number in the double peak. The olefin polymerization catalyst solid component has high hydrogen response, good stereotaxis capability and high polymerization activity.

Description

technical field [0001] The invention relates to a solid component of an olefin polymerization catalyst, an olefin polymerization catalyst and the application of the olefin polymerization catalyst in olefin polymerization reaction. 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 definitely change accordingly. Due to the limitations of current technical means, it is impossi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F10/00C08F4/649C08F4/654C08F4/02
Inventor 凌永泰夏先知刘月祥李威莅赵瑾张纪贵高富堂谭扬乔素珍彭人琪高平
Owner CHINA PETROLEUM & CHEM CORP
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