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

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

Example Embodiment

[0026] Example 1

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

[0028] The product of the previous step was placed in a 250ml round-bottomed flask, added 0.25mol of diethylenetriamine and 50mL (0.4mol) of xylene solution, stirred with a water separator, a magnetic stirrer, and heated by an electric heating mantle. It was found that there was water coming out. After 2-8 hours, it is found that anhydrous continues to flow out, continue to increase the temperature, continue to separate water for about 2-8 hours, after the anhydrous continues to flow out, stop...

Example Embodiment

[0029] Example 2

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

[0031] Examples 1 and 2 involve specific reaction equations.

[0032]

Example Embodiment

[0033] Example 3

[0034] Add 1 mol of benzotriazole, 2.9 mol of chloroacetic acid, and 70 mL of NaOH solution (6 mol / L) to a 250 mL round-bottom flask, stir for half an hour, then heat up and reflux for 2-6 hours. After the reaction is over, slowly drop a 6mol / L HCl solution (100mL) into the flask. At this time, a large amount of white solids can be seen to precipitate. When no more solids are precipitated, filter with suction and dry the solids for later use.

[0035] The product of the previous step was placed in a 250mL round-bottomed flask, with 3.1 mol of ethylenediamine and 45 mL (0.35 mol) of xylene solution, using a water separator, magnetic stirrer to stir, and electric heating mantle heating. It was found that there was water out, and the water was separated about 2- After 8 hours, it was found that anhydrous continued to flow out, and the temperature was continued to be increased. After the continued water separation for about 2-8 hours, after the anhydrous continued to...

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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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