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Supported non-metallocene catalyst and its preparation method and use

A technology of non-metallocene and non-metallocene ligands, applied in the field of non-metallocene catalysts, can solve the problems of not finding or showing the application of chlorinated polyethylene raw materials, etc., and achieving the effect of a simple preparation method

Inactive Publication Date: 2014-12-03
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the magnesium compound involved also contains alkoxymagnesium, it has not been found that the form of alkoxymagnesium may have an impact on the catalyst's polymerization activity, polymer bulk density, etc. Application of raw materials

Method used

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  • Supported non-metallocene catalyst and its preparation method and use

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0285] The alkoxy magnesium ball adopts diethoxy magnesium ball (sphericity is 1.42, bulk density is 0.32g / cm 3 , and the average particle size is 420 microns), the contact solvent is n-octane, and the chemical treatment agent is titanium tetrachloride. The non-metallocene ligand adopts the structure compound of.

[0286] Weigh 5g of diethoxymagnesium spheres and non-metallocene ligands, add n-heptane solvent, stir at 300rpm for 30min and heat to 90 o C makes the system disperse evenly, then in the reaction system, titanium tetrachloride is added dropwise at a uniform speed, and the time of dropping is 2 hours, and after the dropwise addition is completed, continue at 90 o The reaction was stirred at C for 6 hours, filtered, washed 3 times with hexane, each time 60 ml of hexane was used, and vacuum-dried at room temperature to obtain a supported non-metallocene catalyst.

[0287] The ratio is as follows: the ratio of diethoxy magnesium spheres to n-heptane is 1mol: 1000ml...

Embodiment 2

[0290] Basically the same as Example 1, but with the following changes:

[0291] Non-metallocene ligands use , the contact solvent was changed to heptane, and the chemical treatment agent was changed to zirconium tetrachloride (TiBr 4 ), the reaction temperature was changed to 85 o C, continue at 85 after the dropwise addition o The reaction was stirred at C for 10 hours.

[0292] The ratio is as follows: the ratio of alkoxymagnesium spheres to contact solvent is 1mol: 1500ml; the molar ratio of alkoxymagnesium spheres to non-metallocene ligands is 1: 0.015; the molar ratio of alkoxymagnesium spheres to chemical treatment agent It is 1:3.

[0293] Supported non-metallocene catalysts are designated CAT-2.

Embodiment 3

[0295] Basically the same as Example 1, but with the following changes:

[0296] Alkoxymagnesium spheres are changed to dipropoxymagnesium spheres (Mg(OPr) 2 ) (sphericity is 1.83, bulk density is 0.40g / cm 3 , and the average particle size is 530 μm), the non-metallocene ligand adopts , the contact solvent was changed to ethylbenzene, and the reaction temperature was changed to 95 o C, continue at 95 after the dropwise addition o The reaction was stirred at C for 4 hours.

[0297] The ratio is as follows: the ratio of alkoxymagnesium spheres to contact solvent is 1mol: 2000ml; the molar ratio of alkoxymagnesium spheres to non-metallocene ligands is 1:0.02; the molar ratio of alkoxymagnesium spheres to chemical treatment agent It is 1:5.

[0298] Supported non-metallocene catalysts are designated CAT-3.

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Abstract

The invention relates to a supported non-metallocene catalyst and its preparation method and use. The supported non-metallocene catalyst has the characteristics of simple and feasible processes and obvious comonomer effects. A polyolefin product prepared by the supported non-metallocene catalyst is especially suitable as a raw material which can be directly used for preparing chlorinated polyolefin.

Description

[0001] This application is based on the ongoing research project of "National Eleventh Five-Year Support Program Topics". The project has been highly valued and strongly supported by the Ministry of Science and Technology of the People's Republic of China. Its goal is to form a new generation of polyolefin catalyst technology with independent intellectual property rights, improve the homogeneity of domestic related products, improve the grade of polyolefin varieties in my country, and promote its development. Development in the direction of diversification, serialization, specialization and high performance. technical field [0002] The present invention relates to a non-metallocene catalyst. Specifically, the present invention relates to a supported non-metallocene catalyst, its preparation method and its application in olefin homopolymerization / copolymerization. Background technique [0003] Chlorinated polyethylene (CPE) is a random polymer produced by substitution reacti...

Claims

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Application Information

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IPC IPC(8): C08F10/00C08F10/02C08F4/659C08F4/654
Inventor 任鸿平汪文睿易玉明李传峰郭峰左胜武梅利阚林柏基业陈韶辉
Owner CHINA PETROLEUM & CHEM CORP
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