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Catalyst active constituent and catalyst containing same

A technology for active components and catalysts, applied in the field of catalyst active components and catalysts, can solve the problems of inability to make dry content, slow catalyst sedimentation, fine catalyst particles, etc., and achieve shortened preparation period, large catalyst particles, and fast sedimentation speed. Effect

Active Publication Date: 2006-08-09
BEIJING JINDINGKE CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The inventors have proved through repeated experiments that the amount of solvent in the above-mentioned patent has a great influence on the morphology of the catalyst particles obtained at last. Because the amount of solvent is too small, the catalyst particles are too fine, and at the same time, the catalyst settles very slowly, causing washing It is very difficult, so the catalyst can only be used in slurry, and cannot be made into dry parts, which also limits its use

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Put 4.76 grams (0.05mol) MgCl 2 , 100mL of decane and 31mL of isooctyl alcohol (0.2mol), heated to 130°C for 180 minutes, cooled to 50°C, at this temperature, 1.1mL of tetraethoxysilane was added to continue the reaction for 60 minutes, and then cooled to room temperature. Add 50mL TiCl slowly over 90 minutes at 0℃ 4In the mixed solution, add 25 mL of chlorocyclohexane after the dripping is completed and slowly raise the temperature to 110°C for 120 minutes and react for 120 minutes to obtain a solid catalyst. After the stirring is stopped, the solid catalyst particles are found to settle quickly. After the reaction, the solid catalyst was filtered out hot. Wash with hexane, 40mL each time, until the filtrate is basically colorless, in which the free titanium content is less than 0.3mg / mL, and the solid catalyst is obtained after drying. The titanium content is 5.92wt%, the Mg content is 17.4wt%, and the Cl content is 63.5 wt%.

Embodiment 2

[0032] Put 5.7 grams (0.05mol) Mg(OEt) 2 , 100mL of decane and 31mL of butanol (0.2mol), heated to 130°C and reacted for 180 minutes, then cooled to 50°C, at this temperature, 1.1mL of tetrabutoxysilane was added to continue the reaction for 60 minutes, and then cooled to room temperature. Slowly add 50 mL of tetraethoxy titanium to the mixed solution at 0°C for 90 minutes. After the addition is complete, add 25 mL of 1,2-dichloroethane and slowly increase the temperature to 110°C for 120 minutes and react for 120 minutes to obtain a solid. For the catalyst, after stopping stirring, the solid catalyst particles will settle faster. After the reaction, the solid catalyst was filtered out hot. Wash with hexane, 40mL each time, until the filtrate is basically colorless, in which the free titanium content is less than 0.3mg / mL, and the solid catalyst is obtained after drying. The titanium content is 5.87wt%, the Mg content is 16.8wt%, and the Cl content is 62.8 wt%.

Embodiment 3

[0034] Put 4.76 g (0.05mol) MgCl 2 , 100mL of decane and 18.3mL of isooctyl alcohol (0.2mol), heated to 130°C for 180 minutes, cooled to 50°C, at this temperature, 1.1mL of tetraethoxysilane was added to continue the reaction for 60 minutes, and then cooled to room temperature. Add 50mL TiCl slowly over 90 minutes at 0℃ 4 In the mixed solution, add 25 mL of chlorocyclohexane after the dripping is completed and slowly raise the temperature to 110°C for 120 minutes and react for 120 minutes to obtain a solid catalyst. After the stirring is stopped, the solid catalyst particles are found to settle quickly. After the reaction, the solid catalyst was filtered out hot. Wash with hexane, 40mL each time, until the filtrate is basically colorless, in which the free titanium content is less than 0.3mg / mL, and the solid catalyst is obtained after drying. The titanium content is 6.02wt%, the Mg content is 17.1wt%, and the Cl content is 64.3 wt%.

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Abstract

This invention provides an olefin polymerization catalyst active component suitable for ethene polymerization or copolymerization reaction of ethene and alpha-olefin and a catalyst containing said active component, which introduces electronic compound and halohydrocarbon into an active component containing Ti to get a high-active olefin polymerized catalyst. When carrying out olefin polymerrization by the catalyst prepared in such method, one can get the polymer in large density and resin in good size.

Description

Technical field [0001] The present invention relates to a catalyst active component used for ethylene polymerization or copolymerization and a catalyst including the active component. Background technique [0002] Ethylene polymerization usually requires a catalyst with high catalytic activity and long-term performance. At the same time, it also requires the polymer molecular weight and molecular weight distribution to be controllable, as well as to have a good morphology, in order to stabilize the process and improve the operating efficiency. Currently, the Ziegler-Natta type polyethylene catalysts used in industry are all supported high-efficiency catalysts, and the carriers used are generally magnesium chloride. At present, polyethylene catalysts have not only required high activity, but more importantly, good copolymerization performance. The obtained polyethylene must have a large bulk density, uniform particle size distribution, less fine powder, and good physical and mecha...

Claims

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Application Information

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IPC IPC(8): C08F4/654C08F10/00
Inventor 傅丽
Owner BEIJING JINDINGKE CHEM TECH
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