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 complex preparation process, easy breakage, low catalyst polymerization activity, etc., and achieve the effect of simple preparation method

CN102964477AActive Publication Date: 2013-03-13CHINA PETROLEUM & CHEM CORP +1
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2013-03-13

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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 precipitating a mixed slurry of a magnesium compound and a solvent, loading a non-metallocene complex, treating with an IVB group chemical treating agent and directly drying. The preparation method is simple and feasible, and the load capacity of the non-metallocene ligand is adjustable. The invention also relates to the application of the supported non-metallocene catalyst in olefin homopolymerisation / copolymerization. Compared with the prior art, the supported non-metallocene catalyst has the characteristics of less usage of a cocatalyst for catalyzing polymerization of alkene, high polymerization activity, substantial copolymerization effect, high bulk density of polymer, and high and adjustable viscosity average molecular weight of the prepared ultrahigh molecular weight polyethylene.
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Description

[0001] This application is based on the research project of "(National Eleventh Five-Year Support Plan Project). This 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 improve domestic The homogeneity of related products has improved the grade of polyolefins in my country and promoted its 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 includes almost all t...

Examples

preparation example Construction

[0103] The present invention relates to a method for preparing a supported non-metallocene catalyst, comprising the following steps: dissolving a magnesium compound in a first solvent to obtain a magnesium compound solution; adding a precipitation agent to the magnesium compound solution to obtain a modified carrier The step of contacting the modified carrier with the non-metallocene complex in the presence of a second solvent to obtain a mixed slurry; the step of directly drying the mixed slurry to obtain a modified carrier; and the step of making a metal selected from the group IVB The step of reacting the chemical treatment agent of the compound with the modified support to obtain the supported non-metallocene catalyst.

[0104] The magnesium compound will be specifically described below.

[0105] According to the present invention, the term "magnesium compound" uses a common concept in the art, and refers to an organic or inorganic solid anhydrous magnesium-containing compound ...

Embodiment 1

[0328] The magnesium compound uses anhydrous magnesium chloride, the first solvent uses tetrahydrofuran, the precipitation agent uses hexane, and the non-metallocene complex uses the structure The second solvent is dichloromethane, the chemical treatment agent of the IVB group metal compound is titanium tetrachloride, and the chemical treatment agent is hexane.

[0329] Weigh 5g of anhydrous magnesium chloride, add the first solvent and completely dissolve at room temperature to obtain the magnesium compound solution, then add the precipitating agent, stir and react at 60°C for 4 hours to completely precipitate, filter and wash the precipitant twice, each time The amount of precipitant is 60ml, and it is evenly heated to 60°C and vacuum-dried to obtain a modified carrier.

[0330] Then, the modified carrier is added to the solution formed by the non-metallocene complex and the second solvent, stirred at room temperature for 6 hours, and vacuum dried at room temperature to obtain th...

Embodiment 1-1

[0335] It is basically the same as embodiment 1, but has the following changes:

[0336] The first solvent is changed to toluene, the precipitation agent is changed to cyclohexane, and the non-metallocene complex is used The second solvent was changed to toluene, and the chemical treatment agent for group IVB metal compounds was changed to zirconium tetrachloride (ZrCl 4 ), the solvent for the chemical treatment agent is changed to cyclohexane.

[0337] The ratio of the magnesium compound to the first solvent is 1mol: 150ml; the molar ratio of the magnesium compound to the non-metallocene complex is 1:0.15; the volume ratio of the precipitation agent to the first solvent is 1:2; The molar ratio of chemical treatment agent based on IVB metal elements is 1:0.20.

[0338] The supported non-metallocene catalyst is referred to as CAT-1-1.