Catalyst component for olefin polymerization and catalyst thereof

An olefin polymerization and catalyst technology, applied in the field of catalyst components and catalysts, can solve the problem of insufficient catalyst activity and high

Active Publication Date: 2010-11-17
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method is mainly used to change the particle shape of the catalyst, but the activity of the catalyst is still not high enough

Method used

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  • Catalyst component for olefin polymerization and catalyst thereof
  • Catalyst component for olefin polymerization and catalyst thereof
  • Catalyst component for olefin polymerization and catalyst thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] In the reactor fully replaced by high-purity nitrogen, 4.8g of magnesium chloride, 97ml of toluene, 4ml of epichlorohydrin, 12.5ml of tributyl phosphate, and 0.5ml of ethanol were sequentially added, and the temperature was raised to 50°C under stirring and maintained for 2.5 hours. After the solid is completely dissolved, add 1.4 g of phthalic anhydride and keep it for 1 hour, cool the solution to below -25°C, and add TiCl dropwise within 1 hour 4 , slowly warming up to 80°C, adding 6mmol of the electron donor compound 2,4-pentanediol dibenzoate, maintaining at 80°C for 1 hour, after filtering, adding 70ml of toluene, washing twice, adding 60ml of toluene, TiCl 4 40ml, heated up to 100°C, maintained for 2 hours, filtered, added 60ml of toluene, TiCl 4 40ml, heated up to 100°C, maintained for 2 hours, filtered, added 60ml of toluene, washed at boiling temperature for 5 minutes, added 60ml of hexane, washed twice at boiling temperature, each time for 5 minutes, then adde...

Embodiment 2

[0040] Embodiment 2: same as embodiment 1, just add the toluene solution 0.5ml (the amount of ethanol is 0.05ml) that contains 10% (volume ratio) ethanol, add toluene 95ml.

Embodiment 3

[0041] Embodiment 3: same as embodiment 1, just add ethanol 0.75ml.

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Abstract

The invention provides a catalyst component for olefin polymerization. The method for preparing the catalyst component comprises the following steps of: (1) dissolving magnesium halides into a solvent system consisting of an organic epoxy compound, an organic phosphorous compound and an inert diluent to obtain a uniform solution, mixing the uniform solution and a titanium compound, precipitating solids in the presence of an auxiliary precipitation agent, and adding an organic alcoholic compound before the solids are precipitated; and (2) treating the precipitated solids by using at least one electron donor compound diatomic alcohol ester compound to make the compound attached to the solids; and treating the solids by using the titanium compound and the inert diluent. The catalyst of the invention has a simple preparation method; when the catalyst is used for the olefin polymerization, particularly propylene polymerization, the polymerization activity of the catalyst is obviously improved; and the molecular weight distribution of the polymers obtained from the catalyst is quite wide.

Description

technical field [0001] The present invention relates to a catalyst component and its catalyst for olefin polymerization, more specifically, to a catalyst component compounded with an organic alcohol compound and another electron donor compound as an internal electron donor and Its preparation method and its application. technical background [0002] Ziegler-Natta catalysts for olefin polymerization are well known in the literature. Since U.S. Patent No. 4,495,388 proposed active magnesium halide as the carrier of Ziegler-Natta catalysts, high-efficiency carrier catalysts have been developed rapidly. Such catalysts typically include a transition metal-containing active component, usually with magnesium, titanium, halogen, and an internal electron donor as main components; a cocatalyst component, usually an organoaluminum compound; and an external electron donor component, Usually organosilicon compounds. [0003] Since the birth of high-efficiency carrier catalysts, improv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F4/649C08F10/00
Inventor 蔡晓霞刘海涛马吉星张晓帆陈建华高明智马晶杨琳娜
Owner CHINA PETROLEUM & CHEM CORP
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