Catalyst component for olefin polymerization and preparation method thereof

A technology of olefin polymerization and catalyst, which is applied in the field of catalyst components and its preparation, can solve the problems of complex post-treatment process, large amount of solvent recovery, harsh reaction conditions, etc., and achieve good polymer particle shape, good polymerization performance, and dissolution temperature low effect

Active Publication Date: 2010-12-08
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This catalyst is used for the polymerization of propylene, and has high catalyst activity and good polymer particle shape. However, during the preparation of the catalyst, the dissolution temperature of the magnesium halide compound is relatively high, generally above 130°C, and a large amount of solvent is required, so there is a reaction Harsh conditions, large amount of solvent recovery, complex post-treatment process

Method used

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  • Catalyst component for olefin polymerization and preparation method thereof
  • Catalyst component for olefin polymerization and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] (1) Preparation of magnesium chloride complex solution:

[0039] In the reaction kettle that has been repeatedly replaced by high-purity nitrogen, 5.0g of anhydrous magnesium chloride, 25ml of toluene, 20ml of 2-ethylhexanol, and 1.75ml of n-butanol were added in sequence. React for 2.0 hours, then add 1.2ml ethyl benzoate and 0.6ml diethyl phthalate ester , continue to react for one hour, and cool to room temperature to obtain a stable and uniform magnesium chloride complex solution.

[0040] (2) Preparation of solid titanium catalyst component:

[0041] Add the above-prepared magnesium chloride complex solution into a reactor fully replaced by nitrogen and equipped with 92ml of titanium tetrachloride and 13ml of toluene at -20°C, and stir them to make them fully contact at low temperature. After 4 hours, heat up To 110°C, add 1.2ml of diisobutyl phthalate, and react for 1 hour. After the reaction, filter out the liquid, then add 72ml of toluene and 48ml of titaniu...

Embodiment 2

[0043] (1) Preparation of magnesium chloride complex solution:

[0044] Change the add-on of ethyl benzoate and diethyl phthalate into 1.4ml and 0.4ml respectively in embodiment 1, all the other are the same as embodiment 1.

[0045] (2) Preparation of solid titanium catalyst component:

[0046] With embodiment 1.

Embodiment 3

[0048] (1) Preparation of magnesium chloride complex solution:

[0049] The ethyl benzoate add-on in embodiment 1 is changed into 1.6ml, does not add diethyl phthalate, and all the other are the same as embodiment 1.

[0050] (2) Preparation of solid titanium catalyst component:

[0051] With embodiment 1.

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Abstract

The invention provides a catalyst component for olefin polymerization and a preparation method thereof. Various alcohol and ester compounds are introduced into the process of preparing the catalyst component, and the catalyst component has the advantages of simple preparation technology, a few raw material types and lower dissolving temperature of magnesium halide. The prepared catalyst has the characteristics of high catalytic efficiency, good polymerization performance, high apparent density of the polymer, and particularly good shapes of polymer particles.

Description

technical field [0001] The present invention relates to a catalyst component for olefin polymerization and its preparation method. Especially since the catalyst has a good particle shape, when it is used for propylene polymerization, the polymerization activity is high and the polymer particle shape is good. Background technique [0002] In the prior art, the conventional method for preparing the solid titanium catalyst component for olefin polymerization is still the co-precipitation method, that is, the magnesium halide is dissolved in a solvent system to form a uniform solution, and then the active magnesium halide is precipitated with titanium halide, and At the same time, the titanium active component is loaded to obtain a titanium-containing active solid catalyst component. A large number of patents have been disclosed, for example: Chinese patent CN85100997 discloses a catalyst system for olefin polymerization and copolymerization, which catalyst system includes: (a)...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F4/645C08F4/654C08F10/00C08F12/00
Inventor 谭忠严立安徐秀东宋维玮李凤奎尹珊珊于金华周凌郭正阳刘萃莲王宇任春红王迎
Owner CHINA PETROLEUM & CHEM CORP
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