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Supported non-metallocene catalyst, preparation method and application

A non-metallocene, supported technology, applied in the field of non-metallocene catalysts, can solve the problems of small variation range, limited industrial large-scale application of supported non-metallocene catalysts, adverse effects on performance, etc., and achieves the effect of a simple preparation method.

Active Publication Date: 2013-03-13
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] Although the performance of polymers prepared by supported non-metallocene catalysts has been improved compared with Ziegler-Natta catalysts, the change range is small, and the decisive effect of non-metallocene ligands and complexes on polymer properties cannot be fully utilized, thus limiting Industrial large-scale application of supported non-metallocene catalysts
For the composite support formed by porous carrier and magnesium compound, such as Chinese patent 200410066068.6, and the patent PCT / CN2005 / 001737 based on its application discloses a loading method of a highly active non-metallocene catalyst and a Supported non-metallocene olefin polymerization catalyst, its preparation method and application, due to the existence of alcohol in the system, it will have an adverse effect on the performance of the non-metallocene catalyst supported on it, and also limit the intrinsic performance of the non-metallocene catalyst fully use

Method used

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  • Supported non-metallocene catalyst, preparation method and application
  • Supported non-metallocene catalyst, preparation method and application
  • Supported non-metallocene catalyst, preparation method and application

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preparation example Construction

[0144] The present invention relates to a method for preparing a supported non-metallocene catalyst, which includes the following steps: dissolving a magnesium compound in a first solvent to obtain a magnesium compound solution; making a thermally activated porous support and the magnesium compound solution The step of contacting with the non-metallocene complex to obtain the first mixed slurry; the step of directly drying the first mixed slurry to obtain the composite carrier; the step of reacting a chemical treatment agent selected from the group IVB metal compound with the composite carrier to obtain The step of modifying the composite carrier; the step of contacting the non-metallocene ligand with the modified composite carrier in the presence of a second solvent to obtain a second mixed slurry; and directly drying the second mixed slurry to obtain the supported type Non-metallocene catalyst steps.

[0145] The magnesium compound will be specifically described below.

[0146] ...

Embodiment 1

[0426] The magnesium compound adopts anhydrous magnesium chloride, and the non-metallocene complex adopts the structure The first solvent is xylene, and the porous carrier is silica, that is, silica gel, the model is ES757 of Ineos. First, the silica gel is calcined at 600°C under nitrogen atmosphere for 4 hours for thermal activation. IVB chemical treatment agent uses titanium tetrachloride (TiCl 4 ), the second solvent is dichloromethane, and the structure of the non-metallocene ligand is compound of.

[0427] Weigh 5 grams of magnesium compound and add it to the first solvent, then add the non-metallocene complex to completely dissolve at room temperature to obtain a magnesium compound solution, then add the thermally activated porous carrier, and stir for 2 hours to obtain the first mixed slurry , And then uniformly heated to 90 ℃, directly vacuum-dried to obtain a composite carrier.

[0428] Add the prepared composite carrier to the hexane solvent, add the chemical treatment...

Embodiment 2

[0433] It is basically the same as embodiment 1, but has the following changes:

[0434] Before reacting the chemical treatment agent with the composite carrier, the composite carrier is pretreated with a triethyl aluminum auxiliary chemical treatment agent to obtain a pretreated composite carrier.

[0435] That is, the composite carrier was added to the hexane solvent, and then the auxiliary chemical treatment agent triethyl aluminum (concentration 0.88mol / L, hexane solution) was slowly added dropwise, stirred at 60°C for 2 hours, filtered, and washed with hexane 3 Each time, 60ml each time, and finally vacuum drying at 60°C to obtain the pretreated composite carrier. The molar ratio of the magnesium compound and the auxiliary chemical treatment agent is 1:0.2.

[0436] The supported non-metallocene catalyst is referred to as CAT-2.

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Abstract

The invention relates to a supported non-metallocene catalyst and a preparation method. The supported non-metallocene catalyst is prepared by the steps of introducing a non-metallocene complex in a magnesium compound solution, treating by a chemical treatment agent and performing an in-situ reaction with a non-metallocene ligand. The preparation method is simple and feasible, the ingredients content of the non-metallocene is adjustable, and the copolymerization effect is substantial. The invention also relates to the application of the supported non-metallocene catalyst in olefin homopolymerisation / copolymerization. Compared with the prior art, the polymerization activity by catalysis of alkene is high, the bulk density of the polymer is high, and the molecular weight distribution is narrow and controllable.

Description

[0001] This application is based on the research project of the National Eleventh Five-Year Support Plan. The project has received great attention and strong support from the Ministry of Science and Technology. Its goal is to form a new generation of polyolefin catalyst technology with independent intellectual property rights, and to improve the homogeneity of domestic related products, improve the grade of polyolefin products in my country, and promote its development. Development in the direction of diversification, serialization, specialization and high performance. Technical field [0002] The 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 [0003] Non-metallocene catalysts appeared in the mid-to-late 1990s, also known as post-catalysts. The central atom of the main catalyst include...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F10/00C08F4/658C08F4/646C08F4/645C08F4/649C08F4/02
Inventor 李传峰任鸿平郭峰阚林柏基业马忠林陈韶辉汪开秀王亚明杨爱武
Owner CHINA PETROLEUM & CHEM CORP
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