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Loaded non-metallocene catalyst and preparation method and application thereof

A non-metallocene and non-metallocene ligand technology, applied in the field of non-metallocene catalysts, can solve the problems of high cost of silica gel, high temperature and high vacuum required for loading process

Active Publication Date: 2011-05-18
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problem with this catalyst is that the loading process requires high temperature and high vacuum, so it is difficult to apply to industrial production
[0015] 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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  • Loaded non-metallocene catalyst and preparation method and application thereof
  • Loaded non-metallocene catalyst and preparation method and application thereof
  • Loaded non-metallocene catalyst and preparation method and application thereof

Examples

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preparation example Construction

[0082] 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 ligand in a solvent to obtain a magnesium compound solution; adding Precipitating agent, the step of obtaining the modified carrier; and the step of treating the modified carrier with a chemical treatment agent selected from Group IVB metal compounds, to obtain the supported non-metallocene catalyst.

[0083] The steps for obtaining the magnesium compound solution are specifically described below.

[0084] Specifically, the magnesium compound (solid) and the non-metallocene ligand are dissolved in an appropriate solvent (ie, a solvent for dissolving the magnesium compound), thereby obtaining the magnesium compound solution.

[0085] As the solvent, for example, C 6-12 Aromatic hydrocarbons, halogenated C 6-12 Solvents such as aromatic hydrocarbons, esters and ethers. Speci...

Embodiment 1

[0288]The magnesium compound adopts anhydrous magnesium chloride, the solvent for dissolving the magnesium compound and the non-metallocene ligand adopts tetrahydrofuran, and the chemical treatment agent adopts titanium tetrachloride. The non-metallocene ligand adopts the structure compound of.

[0289] Weigh 5g of anhydrous magnesium chloride and non-metallocene ligands, 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 60°C and vacuum-dried to obtain a modified carrier.

[0290] Then add 60ml of hexane to the modified carrier, add titanium tetrachloride dropwise for 30 minutes under stirring conditions, stir and react at 60°C for 4 hours, filter, wash with hexane twice, and use 60ml of hexane each time, Vacuum drying at room temperature to obtain a supporte...

Embodiment 1-1

[0294] Basically the same as Example 1, but with the following changes:

[0295] Non-metallocene ligands use The solvent for dissolving magnesium compounds and non-metallocene ligands was changed to toluene, the precipitating agent was changed to cyclohexane, and the chemical treatment agent was changed to zirconium tetrachloride (ZrCl 4 ).

[0296] Wherein proportioning is, the solvent proportioning of magnesium compound and dissolved magnesium compound and non-metallocene complex is 1mol: 250ml; The molar ratio of magnesium compound and non-metallocene ligand is 1: 0.15; Precipitant and dissolved magnesium compound and non-metallocene complex The solvent volume ratio of the metal ligand is 1:2; the molar ratio of the magnesium compound to the chemical treatment agent is 1:0.20.

[0297] Supported non-metallocene catalysts are designated CAT-1-1.

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Abstract

The invention relates to a loaded non-metallocene catalyst and a preparation method and application thereof. The loaded non-metallocene catalyst has the characteristics of simple and practicable preparation method, flexible and adjustable polymerization activity and the like. The invention also relates to the application of the loaded non-metallocene catalyst to the homopolymerisation / copolymerization of olefin. Compared with the prior art, the application has the characteristic of small using amount of a cocatalyst.

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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IPC IPC(8): B01J31/38B01J31/24B01J31/22B01J37/00C08F10/00C08F4/654C08F4/658C08F4/02C08F110/02C08F210/02
Inventor 姚小利李传峰任鸿平马忠林郭峰汪开秀刘经伟王亚明
Owner CHINA PETROLEUM & CHEM CORP
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