Catalyst component for ethylene polymerization in slurry process and preparation method thereof

A technology of ethylene polymerization and catalyst, which is applied in the field of ethylene polymerization catalyst components and preparation in slurry process, which can solve the problems of low apparent density of polymers, poor particle shape and distribution, etc., and achieve good hydrogen adjustment sensitivity and high activity Effect

Active Publication Date: 2011-01-12
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, since the catalyst uses alcohols and alkane solvents with large polar differences to dissolve the magnesium halide, the magnesium halide cannot be completely dissolved to form a homogeneous solution, but only a fine colloidal suspension or a swollen halo

Method used

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  • Catalyst component for ethylene polymerization in slurry process and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] In the 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 30ml of titanium tetrachloride into it, then add 2ml of trichloroethanol, heat the solution to 80°C, filter, wash with hexane four times, and dry in vacuum to obtain a solid catalyst.

Embodiment 2

[0028] Example 2 Same as Example 1, only the addition of trichloroethanol was changed to 1ml.

Embodiment 3

[0029] Example 3 Same as Example 1, only the addition of trichloroethanol was changed to 3ml.

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PUM

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Abstract

The invention provides a titanium-containing solid catalyst component for ethylene polymerization in a slurry process. The solid catalyst component is prepared by dissolving magnesium halide in an organic epoxy compound and an organic phosphorous compound, adding electrons to form uniform solution, reacting the solution and halide of transition metal titanium or derivative solution of the halide, and after the catalyst solid is separated out, adding a halogenated alcohol compound for modification and thus obtaining the solid catalyst component. The catalyst system consisting of the titanium-containing solid catalyst component is applied to the ethylene polymerization and has high activity and high bulk density. At the same time, the obtained polymer has a relatively good particle form.

Description

technical field [0001] The present invention relates to a catalyst component for ethylene polymerization, its preparation method, and its application in olefin polymerization. Background technique [0002] The traditional Z-N catalyst started from the classic titanium-aluminum catalyst, and has progressed to the stage of being 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 polymer products by adjusting the catalyst performance. [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. In the ethylene polymerization method disclosed in Japanese Patent JP49-51378, the catalyst is a Ti / Mg efficient carr...

Claims

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Application Information

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IPC IPC(8): C08F10/02C08F4/654C08F4/645
Inventor 孙怡菁周俊领马冬王毅邢宝泉张立伟王丽莎黄廷杰
Owner CHINA PETROLEUM & CHEM CORP
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