Supported non-metallocene catalyst as well as preparation method and application thereof

A non-metallocene, supported technology, applied in the direction of catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of high cost of silica gel and complicated treatment process

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

[0010] Even so, the ubiquitous problem of the supported non-metallocene catalysts in the prior art is that using silica gel or a composite containing silica gel as the carrier of the non-metallocene catalyst, although it can be beneficial to the particle type of the polymer finally obtained However, due to the high cost of silica gel suitable for loading, and the need for thermal activation or chemical activation first, the treatment process is complicated

Method used

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  • Supported non-metallocene catalyst as well as preparation method and application thereof
  • Supported non-metallocene catalyst as well as preparation method and application thereof
  • Supported non-metallocene catalyst as well as preparation method and application thereof

Examples

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preparation example Construction

[0080] According to the present invention, it relates to a preparation method of a supported non-metallocene catalyst, comprising the following steps: dissolving a magnesium compound and a non-metallocene complex in a solvent to obtain a magnesium compound solution; The step of adding a precipitating agent to obtain the supported non-metallocene catalyst.

[0081] The steps for obtaining the magnesium compound solution are specifically described below.

[0082] Specifically, the magnesium compound (solid) and the non-metallocene complex are dissolved in an appropriate solvent (ie, a solvent for dissolving the magnesium compound), thereby obtaining the magnesium compound solution.

[0083] As the solvent, for example, C 6-12 Aromatic hydrocarbons, halogenated C 6-12 Solvents such as aromatic hydrocarbons, esters and ethers. Specific examples include toluene, xylene, mesitylene, ethylbenzene, diethylbenzene, chlorotoluene, chloroethylbenzene, bromotoluene, bromoethylbenzene, ...

Embodiment 1

[0220] Anhydrous magnesium chloride is used for the magnesium compound, and tetrahydrofuran is used as a solvent for dissolving the magnesium compound and the non-metallocene complex. The non-metallocene complex adopts the structure compound of.

[0221] Weigh 5g of anhydrous magnesium chloride and non-metallocene complexes, add tetrahydrofuran solvent and dissolve completely at room temperature, stir for 2 hours, add precipitant hexane to make it precipitate, filter, wash 2 times, the amount of precipitant each time is the same as that added before The same amount was uniformly heated to 90° C. and vacuum-dried to obtain a supported non-metallocene catalyst.

[0222] Wherein the proportioning is that the proportioning of magnesium chloride and tetrahydrofuran is 1mol: 210ml; the molar ratio of magnesium chloride and non-metallocene complex is 1: 0.08; the volume proportioning of precipitating agent and tetrahydrofuran is 1: 1;

[0223] Supported non-metallocene catalysts a...

Embodiment 2

[0225] Basically the same as Example 1, but with the following changes:

[0226] Non-metallocene complexes using The solvent for dissolving the magnesium compound and the non-metallocene complex was changed to toluene, and the precipitating agent was changed to cyclohexane.

[0227] Wherein the ratio is, the ratio of magnesium compound to toluene is 1mol: 150ml; the molar ratio of magnesium compound to non-metallocene complex is 1: 0.15; the volume ratio of precipitant to dissolved magnesium compound and non-metallocene complex is 1 : 2.

[0228] Supported non-metallocene catalysts are designated CAT-2.

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Abstract

The invention relates to a supported non-metallocene catalyst and a preparation method thereof. The catalyst has the characteristics of simple and practical preparation method, flexible and adjustable polymerization activity and the like. The invention also relates to an application of the supported non-metallocene catalyst in olefin homopolymerization / copolymerization. Compared with the prior art, the catalyst is characterized in that the dosage of the promoter is less in the application.

Description

technical field [0001] The present invention relates to a non-metallocene catalyst. Specifically, the present invention relates to a supported non-metallocene catalyst, its preparation method and its application in olefin homopolymerization / copolymerization. Background technique [0002] The non-metallocene catalysts that appeared in the middle and late 1990s, also known as post-metallocene catalysts, the central atoms of the main catalysts include almost all transition metal elements, which have reached or even surpassed metallocene catalysts in some performance aspects, becoming The fourth generation of olefin polymerization catalysts after Ziegler, Ziegler-Natta and metallocene catalysts. The polyolefin product produced by this type of catalyst has excellent performance and low production cost. The coordination atoms of non-metallocene catalysts are oxygen, nitrogen, sulfur and phosphorus, and do not contain cyclopentadiene groups or their derivative groups, such as ind...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/26B01J31/22B01J31/24B01J37/00C08F10/00C08F10/02C08F4/654
Inventor 任鸿平李传峰姚小利郭峰马忠林陈海滨汪开秀刘经伟王亚明
Owner CHINA PETROLEUM & CHEM CORP
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