Process for preparing olefin polymerization ball type catalytic component and carrier

A technology of olefin polymerization and spherical carrier, applied in the field of olefin polymerization and copolymerization spherical catalyst, can solve the problem of high alcohol content

Inactive Publication Date: 2003-12-31
YINGKOU XIANGYANG CATALYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its catalyst performance is better, and the polymer produced is (d=1-5mm) spherical particles, but the alcohol content of the spherical carrier prepared by it is relatively high, so it must be de-alcoholized before loading titanium

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Preparation of spherical carrier containing 9,9-bis(methoxymethyl)fluorene

[0033] Under nitrogen protection, 95.2 g of anhydrous magnesium chloride, 190.40 ml of absolute ethanol (alcohol / magnesium molar ratio of 3.24) and 240 ml of white oil were added to the reactor. Heat up to 127°C and stir until MgCl 2 After all dissolved, add 179.4 mmol 9,9-bis(methoxymethyl)fluorene, continue stirring for 2 hours, stop the reaction to obtain a homogeneous solution of magnesium chloride alcoholate containing 9,9-bis(methoxymethyl)fluorene .

[0034] Under nitrogen protection, 1000 ml of white oil and 100 ml of silicone oil preheated to 127°C were added to the reactor and mixed with the homogeneous solution of magnesium chloride alcoholate containing 9,9-bis(methoxymethyl)fluorene, and Stir for 30 minutes at 500-800 rpm. The contents of the reactor were then transferred through an emulsifier to 5 liters (stirred) of hexane pre-cooled to -25 to -35°C under nitrogen pressure. T...

Embodiment 2-3

[0047] The spherical solid catalyst component was prepared by using the carrier (B) and the carrier (C), other conditions were the same as those in Example 1, and the polymerization results were listed in Table 2.

[0048] implement

[0049] EB is ethyl benzoate; diether is 9,9-(methoxymethyl)fluorene.

Embodiment 4-6

[0051] Change the add-on of ethyl benzoate, other conditions are the same as in Example 1, and the results are listed in Table 3.

[0052]

[0053] EB is ethyl benzoate; diether is 9,9-(methoxymethyl)fluorene.

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PUM

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Abstract

The spherical catalyst carrier is prepared with alcoholated magnesium chloride containing double-ether compound in emulsifying pelletizer. Liquid titanium halide compound is carried onto the spherical catalyst carrier to form spherical solid catalyst component in the presence of electron donor. In the X-ray diffraction spectrogram, the spherical solid catalyst component has diffraction peak in 13.3 deg of 2theta angle, strongest diffraction peak in 26.5 deg of 2theta angle and no characteristic diffraction peak of alpha-anhydrous MgCl2 in 15 deg of 2theta angle. The catalyst of the presentinvention has very high activity and may be used to produce polymer with good form, high apparent density and less fine powder. The catalyst is used in homopolymerization and copolymerization of olefin and suitable for various polymerization process.

Description

technical field [0001] The invention relates to a spherical catalyst for olefin polymerization and copolymerization, which mainly comprises a spherical carrier and a preparation method of spherical solid catalyst components. The spherical catalyst of the present invention is suitable for propylene homopolymerization and α-olefin copolymerization. Background technique [0002] Spherical catalysts for olefin polymerization have been around for more than forty years. U.S. patents USP3953414, USP411835, etc. have reported the use of magnesium chloride hydrate MgCl 2 ·6H 2 O, sprayed into a spherical carrier in a molten state and then dehydrated to form MgCl 2 2H 2 O, and then carry out titanium loading treatment to obtain spherical solid catalyst components. Such catalysts are characterized by low catalyst activity and low isotacticity of the resulting polymer. Using magnesium chloride alcoholate instead of hydrate as the raw material for preparing the carrier, the cataly...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F4/643C08F10/00
Inventor 王立成董庆鑫李伟宋巨伟张金地佟兆玉史伟王井庄王继东聂斌赵大安蔡世绵
Owner YINGKOU XIANGYANG CATALYST
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