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Catalyst for polymerization of ethylene or combined polymerization, producing method and application of the same

A technology of ethylene polymerization and catalyst, which is applied in the application field of olefin polymerization or copolymerization, can solve the problems of high catalyst polymerization activity and the need to improve the apparent density of the catalyst, and achieve concentrated particle size distribution, less fine powder, and high apparent density Effect

Active Publication Date: 2011-05-04
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The catalyst has high polymerization activity, concentrated catalyst particle size distribution, and less fine powder, but the apparent density of the catalyst still needs to be improved

Method used

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  • Catalyst for polymerization of ethylene or combined polymerization, producing method and application of the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Embodiment 1: After high-purity N 2 In the fully replaced reactor, add 4.0g of anhydrous MgCl successively 2 , 50ml of toluene, 2.0ml of epichlorohydrin, 3.0ml of tributyl phosphate, heated to 50°C with stirring, and maintained for 15 minutes, added 6.0ml of ethanol, continued to react for 15 minutes, and cooled the solution to -5~0°C , then drop the mixture of 30ml titanium tetrachloride and 30ml heptane into it, then add 2ml hydroxypropyl methacrylate, slowly heat the solution to 80°C, and react at this temperature for 2 hours. Filter, wash 4 times with hexane, and dry in vacuo to obtain a solid catalyst.

[0029] (2) Ethylene polymerization: a stainless steel kettle with a volume of 2 liters is passed through H 2 After full replacement, add 1000ml of hexane, 1.5ml of triethylaluminum (1mol / L hexane solution), metered (5-6mg) of the solid catalyst component prepared above, and heat up to 70°C for hydrogenation at 0.26MPa , and then feed ethylene to make the kettle ...

Embodiment 2

[0030] Embodiment 2 (one) Catalyst synthesis: Same as embodiment 1, only change hydroxypropyl methacrylate into 4ml.

[0031] (two) ethylene polymerization is with embodiment 1.

Embodiment 3

[0032] Embodiment 3: (1) Catalyst synthesis: same as embodiment 1, only change the added hydroxypropyl methacrylate into 2 ml of hydroxyethyl methacrylate.

[0033] (two) ethylene polymerization is with embodiment 1.

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Abstract

The invention relates to a solid catalyst component with titanium used for dimethylene polymerization or combined polymerization. An even solution is formed by making halogenation magnesium dissolved in an organic epoxy compound and an orgnophosphorus compound, then an electron donor is added, and then the mixture reacts with the halide of transition metal titanium or the ramification and the mixture solution of a liquid coprecipitator; after the solid catalyst is separated out, an ester type electron donor is added to hold processing and modification to obtain the solid catalyst component. The catalyst used for ethylene polymerization shows high hydrogen response with good activity and high bulk density. Synchronously, the obtained polymer has good particle shape, thereby being more applicable for the catalyst used by the polymerization technique of doublet polyethylene.

Description

technical field [0001] The present invention relates to a catalyst component for ethylene polymerization or copolymerization, its preparation method, and its application in olefin polymerization or copolymerization. Background technique [0002] The traditional Z-N catalyst started from the classic titanium-aluminum catalyst, and has been developed to be activated by compounds such as magnesium chloride and modified by various other organic compounds; and has developed from simply improving the catalytic activity to improving the polymerization by adjusting the structure of the catalyst performance of the product. [0003] Since the 1970s, companies such as Mitsui Petrochemical Industry Co., Ltd. of Japan have successfully developed a variety of Ti-Mg high-efficiency carrier catalysts with magnesium chloride as the carrier, which has enabled the rapid development of the world's slurry production of polyolefin industry. The more representative technology is the method of eth...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F10/02C08F4/645C08F4/649C08F4/654
Inventor 孙怡菁周俊领王洪涛马冬邢宝泉张立伟金茂筑王丽莎宋久东
Owner CHINA PETROLEUM & CHEM CORP