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Benzotriazole imidazoline and derivative and synthesis process and application thereof

A technology of benzotriazole imidazoline and benzotriazole, applied in the field of benzotriazole imidazoline, can solve the problems of oil field pipeline corrosion, serious, economic loss and the like, and achieve the effect of increasing corrosion resistance

Inactive Publication Date: 2014-01-29
WUHAN INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

my country's oilfield reserves are relatively rich, but due to the CO contained in the oilfield exploitation 2 、H 2 S and other corrosive gases lead to serious corrosion of oilfield pipelines and bring large economic losses to enterprises

Method used

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  • Benzotriazole imidazoline and derivative and synthesis process and application thereof
  • Benzotriazole imidazoline and derivative and synthesis process and application thereof
  • Benzotriazole imidazoline and derivative and synthesis process and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Add 0.1 mol of benzotriazole, 0.21 mol of chloroacetic acid, and 50 mL (6 mol / L) of NaOH solution into a 250 mL round bottom flask and stir for half an hour, then heat up and reflux for 2-6 hours. After the reaction is over, put the flask into ice water and slowly add 60mL of 6mol / L HCl solution dropwise into the flask. At this time, a large amount of white solids can be seen to precipitate. When no solids are precipitated, suction filter and dry the solids for later use. ;

[0028] Put the product of the previous step into a 250ml round bottom flask, add 0.25mol of diethylenetriamine and 50mL (0.4mol) of xylene solution, use a water separator, stir with a magnetic stirrer, and heat with an electric heating mantle. After 2-8 hours, it is found that no water continues to flow out, continue to increase the temperature, and continue to divide the water for about 2-8 hours. After no water continues to flow out, stop the reaction to obtain a brown-yellow benzotriazole imidaz...

Embodiment 2

[0030] Add the benzotriazole imidazoline (0.1mol) obtained in Example 1, 0.24mol of oleic acid, and 20mL (0.19mol) of toluene into a 250mL round-bottomed flask, raise the temperature and separate water for about 2-5 hours to obtain benzotriazole The azole imidazoline derivatives received 70.3 g of the product, and the yield was 92.63%.

[0031] The concrete reaction equation that embodiment 1 and 2 relate to.

[0032]

Embodiment 3

[0034] Add 1 mol of benzotriazole, 2.9 mol of chloroacetic acid, and 70 mL (6 mol / L) of NaOH solution into a 250 mL round bottom flask, stir for half an hour, then heat up and reflux for 2-6 hours. After the reaction was finished, 6mol / L HCl solution (100mL) was slowly added dropwise into the flask. At this time, a large amount of white solids could be seen to precipitate. When no solids were precipitated, suction filtration was performed, and the solids were dried for later use.

[0035] The product from the previous step was placed in a 250mL round bottom flask, 3.1mol of ethylenediamine, 45mL (0.35mol) of xylene solution, stirred with a water separator, a magnetic stirrer, and heated with an electric heating mantle. After 8 hours, it was found that no water continued to flow out. Continue to increase the temperature and continue to separate water for about 2-8 hours. After no water continued to flow out, the reaction was stopped to obtain a brown-yellow benzotriazole imidazo...

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PUM

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Abstract

The invention relates to benzotriazole imidazoline and a derivative and a synthesis process and an application thereof. By linking the molecular fragments of imidazoline and benzotriazole into one molecule, the number of N atoms that can be coordinated with metal in the molecule is increased so as to increase coordination between a corrosion inhibitor and the metal, realize good association with the metal and protect the metal from external corrosion. As a good corrosion inhibitor for metal copper, the benzotriazole compound is introduced into an imidazoline compound, the number of N atoms is increased, multiple empty tracks are provided, good combination with metal can be realized, and the corrosion resistance of the metal is enhanced.

Description

technical field [0001] The invention relates to benzotriazole imidazoline, its derivatives, synthesis process and application. technical background [0002] Nowadays, the anti-corrosion of metals is getting more and more attention, especially the anti-corrosion of oilfield pipelines. my country's oilfield reserves are relatively rich, but due to the CO contained in the oilfield exploitation 2 、H 2 S and other corrosive gases lead to serious corrosion of oilfield pipelines and bring large economic losses to enterprises. Therefore, it is particularly important to reduce the corrosion of oilfield pipelines. By adding corrosion inhibitors, the pipelines are protected to reduce the corrosion of pipelines, and imidazoline corrosion inhibitors are widely used nowadays. In recent years, the research and development and preparation of corrosion inhibitors are mainly through the addition of imidazolines and their complexes that have multiple lone pairs of electrons, provide empty ...

Claims

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Application Information

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IPC IPC(8): C07D403/06C09K8/54
CPCC07D403/06C23F11/149
Inventor 陈云峰潘志权马成龙郭嘉宣璐
Owner WUHAN INSTITUTE OF TECHNOLOGY
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