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Catalyst component for ethene polymerization, preparing method and catalyst thereof

A technology for ethylene polymerization and catalysts, applied in chemical instruments and methods, organic compound/hydride/coordination complex catalysts, physical/chemical process catalysts, etc. Static electricity and other issues

Inactive Publication Date: 2004-04-21
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the inventors found that this catalyst powder has a relatively large amount of static electricity, and an antistatic agent has to be added in the polymerization process, which brings inconvenience to the production operation and increases the production cost.
Through trial and error, the inventors believe that due to the addition of chlorinated alkyl metal compounds in the catalyst preparation process, it is the cause of the relatively high antistatic properties of the catalyst powder.

Method used

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  • Catalyst component for ethene polymerization, preparing method and catalyst thereof
  • Catalyst component for ethene polymerization, preparing method and catalyst thereof
  • Catalyst component for ethene polymerization, preparing method and catalyst thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] (1) Take about 12 grams of spherical silica gel (model 948, Grace Company, USA) and activate it at 600° C. for 4 hours under the protection of nitrogen.

[0035] (2) Under the protection of nitrogen, in the reaction flask after high-temperature drying with a stirrer, add 5.0 grams of thermally activated silica gel obtained in step (1), 100 milliliters of purified hexane and 2.0 milliliters of Al(n-C 6 h 13 ) 3 hexane solution (1.5mmol / ml), react at 60°C for half an hour, add 0.6ml of silicon tetrachloride dropwise, and continue stirring for half an hour.

[0036] (3) Add 1.9ml Cl dropwise to the reactor at 60°C 3 CCH 2 OH, after constant temperature stirring for 1 hour, 10.0ml of 10.0ml of dibutylmagnesium in heptane solution (1M) was added dropwise, and after stirring for 2 hours, 0.6ml of titanium tetrachloride was added dropwise, and the reaction was continued at 60°C for 1 hour.

[0037] (4) The temperature of the reaction system was raised to 70° C., and then p...

Embodiment 2

[0043] Remove 2.0 milliliters of Al(n-C in catalyst preparation step (2) 6 h 13 ) 3 hexane solution (1.5mmol / ml), adjusted to 3.0ml Al(C 2 h 5 ) 3 Except the hexane solution (1.0mmol / ml), other conditions are the same as embodiment 1.

[0044] The evaluation conditions for the slurry polymerization of the catalyst are the same as in Example 1, and the polymerization results are shown in Table 1.

[0045] The electrostatic size of the catalyst solid powder was measured by the method described, and the results are shown in Table 1.

Embodiment 3

[0047] Except that the silicon tetrachloride in the catalyst preparation step (2) was adjusted to titanium tetrachloride, other conditions were the same as in Example 1.

[0048] The evaluation conditions for the slurry polymerization of the catalyst are the same as in Example 1, and the polymerization results are shown in Table 1.

[0049] The electrostatic size of the catalyst solid powder was measured by the method described, and the results are shown in Table 1.

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Abstract

A catalyst for the ethylene polymerization and its preparing process and application are disclosed. Said catalyst contains an inorganic oxide as carrier, and several active components, carried by said carrier, which are alkyl metal compound, halide, dual-function compound able to react with dihydroxy magnesium, Mg compound, and Ti compound. Its advantages are better hydrogen regulating performance and balanced activity, and low static electricity.

Description

technical field [0001] The present invention relates to a catalyst component and its catalyst for the polymerization or copolymerization of olefins, especially ethylene, as well as the preparation method and application of the catalyst component. technical background [0002] Since the successful development of high-efficiency polyethylene catalysts in the 1970s, the world's polyethylene industry has undergone tremendous changes. Over the past 20 years, with the development of ethylene polymerization process, the catalysts matching the polymerization process have also made great progress. Among them, high-efficiency catalysts still occupy an important role in the field of polyethylene catalysts due to their excellent polymerization performance and mature application technology. status. After years of exploration and research, the preparation method of Mg-Ti high-efficiency catalyst has also developed from the co-grinding method and the suspension impregnation method to the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/00C08FC08F4/02C08F4/44C08F4/645C08F4/658C08F10/00C08F10/02C08F110/02
CPCC08F10/00C08F110/02C08F4/6555C08F4/651C08F4/6567C08F2500/12
Inventor 高克京刘东兵陈伟吕新平安京燕关颖张隽赵勤芳
Owner CHINA PETROLEUM & CHEM CORP
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