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Catalyst additive and catalyst for olefin polymerization

An olefin polymerization and catalyst technology, which is applied in the field of olefin polymerization catalysts, can solve the problems of high polymer fine powder, low bulk density, high production cost and environmental protection pressure, etc., and achieves the effects of good particle shape and high polymerization activity.

Active Publication Date: 2014-11-12
ZIBO XINSU CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the catalyst component is used for ethylene slurry polymerization, although the morphology is better, there are still many polymer fine powders in industrial production, and the bulk density is low, and it is necessary to use organic matter such as phthalic anhydride and a large amount of TiCl when synthesizing the catalyst. 4 , the production cost and the pressure on environmental protection are relatively high

Method used

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  • Catalyst additive and catalyst for olefin polymerization

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] 1) Precursor preparation: Add 4.8g MgCl to 200ml decane in a reactor fully replaced by nitrogen 2 (0.05mol), stirred and dissolved at 0°C for 1h, then added 18.4 g C 2 h 5 OH (0.4mol), the temperature was raised to 70°C under stirring, and the temperature was maintained for 3h; 7.6 g Ti(OC 2 h 5 ) 4(0.033mol), 2.7g o-cresol (0.025mol), continue the reaction for 1h, then cool down to 5°C, and slowly add 22.44g SiCl dropwise at 5°C 4 (0.132mol), then raise the temperature within 0.5 h, raise the temperature to 70°C at a constant speed, and maintain the reaction at a constant temperature of 70°C for 2 h, stop stirring, let the precipitation stand for 0.5 h, filter while it is hot, wash with hexane 3 times, and dry to obtain a solid particles.

[0029] 2) Catalyst additive preparation: Take 5g of the solid particles obtained above, disperse them in 100ml of decane, add 20ml of TiCl dropwise at -10°C 4 , and maintain the reaction at -10°C for 0.5h, then raise the tempe...

Embodiment 2

[0034] 1) Precursor preparation: Add 4.8g MgCl to 200ml decane in a reactor fully replaced by nitrogen 2 (0.05mol), stirred and dissolved at 30°C for 3h, then added 13.8 g C 2 h 5 OH (0.3mol), heated to 70°C with stirring, and kept at constant temperature for 3h; 7.6 g Ti(OC 2 h 5 ) 4 (0.033mol), 2.7g o-cresol (0.025mol), after continuing the reaction for 1h, the temperature was lowered to 5°C, and 22.44 g SiCl was slowly added dropwise at 5°C 4 (0.132mol), and then within 0.5 h, the temperature was raised at a constant speed to 70 ° C, and the reaction was maintained at a constant temperature of 70 ° C for 2 h, the stirring was stopped, and the precipitation was allowed to stand for 0.5 h, filtered while it was hot, washed 3 times with hexane, and dried to obtain a solid particles.

[0035] 2) Catalyst additive preparation: Take 5g of the solid particles obtained above, disperse them in 100ml of decane, add 20ml of TiCl dropwise at -10°C 4 , and maintain the reaction at...

Embodiment 3

[0038] 1) Precursor preparation: Add 4.8g MgCl to 200ml decane in a reactor fully replaced by nitrogen 2 (0.05mol), stirred and dissolved at 60°C for 6h, then added 19.5 g of isooctyl alcohol (0.15mol), heated to 100°C with stirring, kept at a constant temperature for 3h; added dropwise 7.6 g of Ti(OC 2 h 5 ) 4 (0.033mol), 2.7g o-cresol (0.025mol), continue to react for 1h, then cool down to 15°C, and slowly add 22.44g SiCl dropwise at 15°C 4 (0.132mol), then within 0.5 h, the temperature was raised to 80°C at a constant rate, and the reaction was maintained at a constant temperature of 80°C for 2 h, the stirring was stopped, and the precipitation was allowed to stand for 0.5 h, filtered while hot, washed 3 times with hexane, and dried to obtain solid particles .

[0039] 2) Catalyst additive preparation: Take 5g of the solid particles obtained above, disperse them in 100ml of decane, add 20ml of TiCl dropwise at -10°C 4 , and maintain the reaction at -10°C for 0.5h, then ...

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Abstract

The invention relates to a titanium family olefin polymerization catalyst additive, a catalyst comprising the titanium family olefin polymerization catalyst additive and the application of the catalyst. A preparing method comprises the steps that (1) magnesium halide is dissolved in an inert organic solvent and is in contact with alcoholic compounds, phenol compounds and a titanate mixture, and a magnesium compound solution is obtained; (2) silicon halide is in contact with the magnesium compound solution prepared in the step (1) to prepare spherical solid body particulate matter; and the spherical solid body particulate matter prepared in the step (2) is dispersed in the inert organic solvent, a titanium tetrachloride solution is added in a dripping mode, filtering, washing and drying are carried out, and the catalyst additive is obtained. The catalyst comprising the additive and a promoter is used for olefins, especially in vinyl polymerization. The olefin polymerization catalyst is good in particle morphology, high in polymerization activity and suitable for a slurry process or a vapor phase polymerization technology or a combination polymerization technology.

Description

technical field [0001] The invention relates to the technical field of olefin polymerization catalysts, in particular to a titanium-based olefin polymerization catalyst additive, a catalyst composed of the catalyst and the application of the catalyst. Background technique [0002] In the process of olefin polymerization, whether it is liquid phase, gas phase, slurry or other methods, the shape, size and other properties of polymer particles are very important to the polymerization production. The good shape of the polymer means that the polymer is easier to transport, and often means a higher bulk density, which means that the production capacity of the same size polymerization reactor is higher, the particle size of the polymer particles is suitable, and there is less fine powder. It means good flow performance and less agglomeration of polymer powder, and reduces the risk of static electricity in the device and blockage of polymer delivery lines caused by it. [0003] The...

Claims

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Application Information

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IPC IPC(8): C08F10/02C08F4/646C08F4/654C08F4/656
Inventor 张志传李德宏苏光赵晓燕马丽军姜志强
Owner ZIBO XINSU CHEM
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