Supported non-metallocene catalyst, 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 restricting the shape of polymer particles and the difficulty of controlling the shape of catalyst particles, and achieve the effect of simple preparation method

Active Publication Date: 2016-09-14
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

These two methods use a magnesium compound support, and the particle morphology of the catalyst is difficult to control, which limits the particle morphology of the polymer obtained from the polymerization.
[0010] Patents 200910180603.3, 200910180604.8, 200910210989.8, 200910210986.4, 200910210985.X, 200910210990.0 disclose preparation methods of supported non-metallocene catalysts similar to the above-mentioned patents, all of which use magnesium compounds as carriers. The morphology of polymer particles obtained by this polymerization

Method used

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

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preparation example Construction

[0089] The invention 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 in the presence of alcohol to obtain a magnesium compound solution; adding the magnesium compound adding a precipitant to the solution or drying the magnesium compound solution to obtain a magnesium compound carrier; and contacting the magnesium compound carrier with a silicon compound of formula (X) and a chemical treatment agent selected from group IVB metal compounds to obtain the magnesium compound carrier Describe the steps of the supported non-metallocene catalyst.

[0090] The steps for obtaining the magnesium compound solution are specifically described below.

[0091] According to this procedure, the magnesium compound and the non-metallocene ligand are dissolved in an appropriate solvent (also referred to as a solvent for dissolving the magnesium compound) in the presenc...

Embodiment 1

[0351]Anhydrous magnesium chloride is used for the magnesium compound, tetrahydrofuran is used for the solvent, n-butanol is used for the alcohol, tetraethoxy silicon is used for the silicon compound, titanium tetrachloride is used for the chemical treatment agent of group IVB metal compounds, hexane is used for the precipitating agent, and hexane is used for the non-metallocene compound. The body adopts the structure of compound of.

[0352] Weigh 5g of anhydrous magnesium chloride, add solvent, non-metallocene ligand and alcohol, and dissolve completely at normal temperature to obtain a magnesium compound solution, add a precipitating agent to the magnesium compound solution to make it completely precipitate, filter, and wash 3 times with a precipitating agent. The amount of the secondary precipitating agent is 60ml, and it is uniformly heated to 60° C. and vacuum-dried to obtain a magnesium compound carrier.

[0353] Add the prepared magnesium compound carrier into the h...

Embodiment 2

[0357] Basically the same as Example 1, but with the following changes:

[0358] Before the magnesium compound carrier is in contact with the silicon compound and the chemical treatment agent, the magnesium compound carrier is first treated with the auxiliary chemical treatment agent triethylaluminum.

[0359] That is, the magnesium compound carrier is added to the hexane solvent, and then the auxiliary chemical treatment agent triethylaluminum (concentration: 0.88mol / L, hexane solution) is slowly added dropwise, stirred at 60°C for 2 hours, filtered, and washed with hexane 3 times, each time with the same amount of solvent added before, and finally vacuum-dried at 60° C. to obtain a pretreated magnesium compound carrier. The molar ratio of the magnesium compound carrier calculated as Mg element to the auxiliary chemical treatment agent calculated as Al element is 1:0.2.

[0360] 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 supported non-metallocene catalyst has the characteristics of high catalytic activity, remarkable copolymerization effect and the like. The present invention also relates to the application of the supported non-metallocene catalyst in olefin homopolymerization / copolymerization, the olefin homopolymerization / copolymerization thus produced has good particle shape, narrow molecular weight distribution, reduced oligomer and fine powder content, etc. features.

Description

[0001] This application is based on the ongoing research project of "National Eleventh Five-Year Support Program Topics". The project has been highly valued and strongly supported by the Ministry of Science and Technology of the People's Republic of China. Its goal is to form a new generation of polyolefin catalyst technology with independent intellectual property rights, improve the homogeneity of domestic related products, improve the grade of polyolefin varieties in my country, and promote its development. Development in the direction of diversification, serialization, specialization and high performance. technical field [0002] 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 [0003] The non-metallocene catalysts that appeared in the mid-to-late 1990s are also call...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F10/00C08F4/646C08F4/658C08F4/654C08F4/656C08F4/02
Inventor 李传峰任鸿平汪文睿易玉明郭峰杨爱武
Owner CHINA PETROLEUM & CHEM CORP
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