Olefin polymerization catalyst as well as preparation method and application thereof

A technology of olefin polymerization and catalyst, which is applied in the field of olefin polymerization catalyst and its preparation, and can solve the problems of complex preparation process, high melting temperature, and large energy consumption

Active Publication Date: 2015-04-08
PETROCHINA CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, the preparation of magnesium halide spherical adducts in this type of method often requires high melting temperature and low cooling molding temperature, and sometimes dealcoholization treatment is required, the preparation process is complicated, and the energy consumption is large.

Method used

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  • Olefin polymerization catalyst as well as preparation method and application thereof
  • Olefin polymerization catalyst as well as preparation method and application thereof
  • Olefin polymerization catalyst as well as preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0053] This embodiment provides a kind of olefin polymerization catalyst, and it is prepared through the following steps:

[0054] Add 1g of magnesium dichloride, 40mL of toluene, 2.5mL of ethanol, 2mL of tributyl phosphate, and 1.7mL of epichlorohydrin into a reactor that has been fully replaced with nitrogen, heat up to 90°C while stirring, and then react at a constant temperature for 3h. Cool down to 50°C, add 0.05 mL of tetraethoxysilane and 0.02 mL of ethylene glycol monomethyl ether in sequence, and react at constant temperature for 2 hours. Cool down to -5°C, add 15 mL of titanium tetrachloride dropwise, and then react at constant temperature for 1 h. The temperature was raised to 90°C, and the reaction was carried out at a constant temperature for 2 hours. Stop stirring, leave standstill, separate layers, filter, wash with n-hexane four times (each 30 milliliters), dry, obtain good fluidity, uniform particle size distribution, spherical powdery solid procatalyst. The...

Embodiment 2

[0056] This embodiment provides a kind of olefin polymerization catalyst, and it is prepared through the following steps:

[0057]Add 1g of magnesium dichloride, 40mL of toluene, 2.5mL of ethanol, 2mL of tributyl phosphate, and 1.7mL of epichlorohydrin into a reactor that has been fully replaced with nitrogen, heat up to 90°C while stirring, and then react at a constant temperature for 3h. Cool down to 40°C, add 0.02 mL of tetraethoxysilane and 0.02 mL of ethylene glycol monoethyl ether in sequence, and react at constant temperature for 2 hours. Cool down to -5°C, add 20 mL of titanium tetrachloride dropwise, and then react at constant temperature for 1 h. The temperature was raised to 80°C, and the reaction was carried out at a constant temperature for 2 hours. Stop stirring, leave standstill, separate layers, filter, wash with n-hexane four times (each 30 milliliters), dry, obtain good fluidity, uniform particle size distribution, spherical powdery solid procatalyst. The c...

Embodiment 3

[0059] This embodiment provides a kind of olefin polymerization catalyst, and it is prepared through the following steps:

[0060] Add 1g of magnesium dichloride, 40mL of toluene, 1mL of ethanol, 2.5mL of tributyl phosphate, and 1.5mL of epichlorohydrin into a reactor that has been fully replaced with nitrogen, heat up to 80°C while stirring, and then react at a constant temperature for 2 hours. Cool down to 60°C, add 0.01 mL of tetraethoxysilane and 0.01 mL of ethylene glycol monobutyl ether in sequence, and react at constant temperature for 2 hours. Cool down to -5°C, add 25 mL of titanium tetrachloride dropwise, and then react at constant temperature for 1 h. The temperature was raised to 90°C, and the reaction was carried out at a constant temperature for 2 hours. Stop stirring, leave standstill, separate layers, filter, wash with n-hexane four times (each 30 milliliters), dry, obtain good fluidity, uniform particle size distribution, spherical powdery solid procatalyst. ...

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Abstract

The invention relates to an olefin polymerization catalyst as well as a preparation method and application of the olefin polymerization catalyst. The olefin polymerization catalyst comprises a primary catalyst and a promoter catalyst, wherein the primary catalyst comprises magnesium halide, transition metal halide, organic alcoholate, phosphate ester compound, epoxy haloalkane compound, organo-siloxane compound and organic alcohol ether compound; and the promoter catalyst comprises one or several kinds of the combination of organoaluminum compound. The preparation method of the olefin polymerization catalyst comprises the steps as follows: dispersing the magnesium halide into an organic solvent; sequentially adding the organic alcoholate, the phosphate ester compound and the epoxy haloalkane compound; heating and agitating to dissolve; then sequentially adding the organo-siloxane compound and the organic alcohol ether compound; and dropping the transition metal halide to obtain the primary catalyst, wherein the primary catalyst and the promoter catalyst are individually stored, and combined when in use. According to the olefin polymerization catalyst provided by the invention, the primary spherical catalyst and the promoter spherical catalyst are combined when in use, thus, high catalytic activity is achieved.

Description

technical field [0001] The invention relates to an olefin polymerization catalyst, a preparation method and application thereof, and belongs to the field of olefin polymerization catalysts and olefin polymerization. Background technique [0002] Ziegler-Natta catalysts have been developed for nearly 60 years. During this period, polyolefin catalysts such as metallocene and non-metallocene have appeared, but there are many problems in their industrialization, such as expensive co-catalysts and difficult loading. Therefore, at present, in terms of industrial production and market share, the traditional Z-N catalyst will still be the absolute leader in the field of olefin polymerization for a period of time in the future. In recent years, Z-N catalyst products at home and abroad have emerged one after another, and the catalyst stability and catalytic activity have also been continuously improved. However, the catalyst is still insufficient in terms of particle regularity and p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F10/00C08F4/649C08F4/658C08F4/70C08F110/00C08F210/16C08F210/02
Inventor 义建军胡徐腾李红明黄启谷朱百春黄海兵张明革刘智王永刚李志飞
Owner PETROCHINA CO LTD
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