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A kind of hyperbranched polymer and its preparation method and application

A hyperbranched polymer and reaction technology, which is applied in the field of petroleum additives, can solve the problem that the demulsification efficiency needs to be improved, and achieve the effects of efficient demulsification, mild reaction conditions and less dosage.

Active Publication Date: 2022-03-08
湖北鑫城普瑞化学科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Although the demulsifiers provided by the above methods have good demulsification efficiency, the demulsification of diesel oil emulsion by the above methods needs to be carried out at a relatively high temperature, and the demulsification efficiency still needs to be improved

Method used

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  • A kind of hyperbranched polymer and its preparation method and application
  • A kind of hyperbranched polymer and its preparation method and application
  • A kind of hyperbranched polymer and its preparation method and application

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preparation example Construction

[0023] The concrete preparation method of this hyperbranched polymer comprises the steps:

[0024] (1) dissolving trimethyl citrate in a solvent, adding ethylenediamine thereto, and reacting at normal temperature to obtain intermediate 1;

[0025] (2) Add methyl acrylate and ethylenediamine to intermediate 1, react at room temperature, and then remove the solvent by distillation under reduced pressure to obtain intermediate 2;

[0026] (3) Under reduced pressure, the intermediate 2 was reacted with a gradient from 60 to 120° C. for 8 to 10 hours to obtain a reaction product. The reaction product was separated and dried to obtain the target product.

[0027] In some preferred embodiments of the present invention, the molar ratio of trimethyl citrate to ethylenediamine in step (1) is 1:3.

[0028] In some preferred embodiments of the present invention, the solvent used in step (1) is methanol.

[0029] In some preferred embodiments of the present invention, in step (1), trimet...

Embodiment 1

[0041]Embodiment 1 of the present invention provides a kind of preparation method of hyperbranched polymer, comprises the steps:

[0042] (1) 2.34g (0.01mol) of trimethyl citrate was dissolved in 30ml of methanol, then 1.8g (0.03mol) of ethylenediamine was added dropwise thereto, after mixing evenly, the mixed solution was placed at room temperature (25 °C) Stir the reaction at a rate of 300r / min for 24h to obtain intermediate 1;

[0043] (2) Add 9.02g (0.15mol) of ethylenediamine and 15.50g (0.18mol) of methyl acrylate to the intermediate 1 prepared in step (1), and continue stirring at a rate of 300r / min at room temperature Reaction for 24h, and then the solvent methanol was removed under reduced pressure to obtain intermediate 2;

[0044] (3) Under reduced pressure, react intermediate 2 at 60°C for 1h, 80°C for 1h, 100°C for 2h, and 120°C for 2h, naturally cool the obtained reaction product to room temperature, and add ether to the reaction product After stirring and prec...

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Abstract

The invention discloses a hyperbranched polymer. The hyperbranched polymer is centered on trimethyl citrate and the amine group is an end group; the weight average molecular weight M of the hyperbranched polymer is w is 10757 and the PDI is 5.09. The hyperbranched polymer is centered on trimethyl citrate, and the amine group is the end group. It contains a large number of hydrophilic groups, which can significantly reduce the oil-water interfacial tension and improve the demulsification efficiency. Efficient demulsification of oil-in-water emulsions can be achieved under a low temperature. At room temperature, the demulsification efficiency of 50mg / L hyperbranched polymers for diesel oil emulsions can reach 99.7%. Milk efficiency is high. The invention also provides a preparation method of the hyperbranched polymer and its application as a demulsifier.

Description

technical field [0001] The invention belongs to the technical field of petroleum additives, and in particular relates to a hyperbranched polymer and its preparation method and application. Background technique [0002] The demulsification and dehydration of crude oil emulsion is an important link in the process of oil exploitation, gathering and transportation, and refining. The oil-water emulsion system is more complicated. Therefore, the demulsification research of oil-water emulsion is of great significance. Chemical demulsification is to achieve the purpose of demulsification by adding a certain amount of chemical agents to the emulsion. Demulsifiers can be classified into cationic, anionic and nonionic. Compared with ionic demulsifiers, nonionic demulsifiers are not easily affected by electrolytes because of their amphiphilic structure. Chemical demulsifier is the key to chemical demulsification. Traditional demulsifiers have problems such as low demulsification eff...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G83/00C10G33/04
CPCC08G83/005C10G33/04
Inventor 米远祝匡家哲叶泛张泽俊罗跃袁怀奎
Owner 湖北鑫城普瑞化学科技有限公司
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