Adipic acid bis-imidazoline derivative and preparation method thereof, and applications of adipic acid bis-imidazoline derivative as corrosion inhibitor

A technology of adipic acid and imidazoline, applied in the field of adipic acid bisimidazoline derivatives, can solve the problems of unsatisfactory corrosion performance and low corrosion inhibition efficiency, and achieve excellent anti-CO2 corrosion performance, excellent corrosion inhibition performance, and improved corrosion resistance. water soluble effect

Active Publication Date: 2015-08-12
成都恒固新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Corrosion inhibitors in the prior art are effective in resisting CO 2 The corrosion performance ...

Method used

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  • Adipic acid bis-imidazoline derivative and preparation method thereof, and applications of adipic acid bis-imidazoline derivative as corrosion inhibitor
  • Adipic acid bis-imidazoline derivative and preparation method thereof, and applications of adipic acid bis-imidazoline derivative as corrosion inhibitor
  • Adipic acid bis-imidazoline derivative and preparation method thereof, and applications of adipic acid bis-imidazoline derivative as corrosion inhibitor

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Experimental program
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preparation Embodiment 1

[0024] Compounds of the following structural formula:

[0025]

[0026] The preparation method of the above compound, the method comprises first reacting adipic acid and triethylenetetramine to generate an imidazoline intermediate, then reacting the imidazoline intermediate with benzyl chloride to obtain a quaternized product, and finally quaternizing The product reacts with thiourea to give the target compound.

[0027] Further, the method specifically includes the following steps:

[0028] (1) Dissolve 5.85g of adipic acid (0.04mol) in 20ml of xylene, the volume ratio of adipic acid to xylene is 1:1 (the volume is calculated by the relative density of adipic acid, and then added according to the volume ratio xylene);

[0029] (2) After the solution in step (1) is warmed up to 110°C, triethylenetetramine is added dropwise to the solution in step (1) according to the molar ratio of adipic acid and triethylenetetramine at 1:3, The specific amount of amine used is 17.55g. ...

preparation Embodiment 2

[0034] Compounds of the following structural formula:

[0035]

[0036] The preparation method of the above compound, the method comprises first reacting adipic acid and triethylenetetramine to generate an imidazoline intermediate, then reacting the imidazoline intermediate with benzyl chloride to obtain a quaternized product, and finally quaternizing The product reacts with thiourea to give the target compound.

[0037] Further, the method specifically includes the following steps:

[0038] (1) Dissolve 5.85g of adipic acid in 20ml of xylene, the volume ratio of adipic acid to xylene is 1:1 (calculate its volume based on the relative density of adipic acid, and then add xylene according to the volume ratio);

[0039] (2) After the solution in step (1) is warmed up to 115°C, triethylenetetramine, triethylenetetramine is added dropwise to the solution in step (1) according to the molar ratio of adipic acid to triethylenetetramine at 1:2.5. The specific amount of amine used...

preparation Embodiment 3

[0044] Compounds of the following structural formula:

[0045]

[0046] The preparation method of the above compound, the method comprises first reacting adipic acid and triethylenetetramine to generate an imidazoline intermediate, then reacting the imidazoline intermediate with benzyl chloride to obtain a quaternized product, and finally quaternizing The product reacts with thiourea to give the target compound.

[0047] Further, the method specifically includes the following steps:

[0048] (1) Dissolve 5.86g of adipic acid in 20ml of xylene, the volume ratio of adipic acid to xylene is 1:1 (calculate its volume based on the relative density of adipic acid, and then add xylene according to the volume ratio);

[0049] (2) After the solution in step (1) is warmed up to 105°C, triethylenetetramine, triethylenetetramine is added dropwise to the solution in step (1) according to the molar ratio of adipic acid to triethylenetetramine at 1:2.2. The specific amount of amine used...

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Abstract

The present invention discloses an adipic acid bis-imidazoline derivative and a preparation method thereof, and applications of the adipic acid bis-imidazoline derivative as a corrosion inhibitor. According to the present invention, the preparation method comprises that: adipic acid and triethylenetetramine react to generate an imidazoline intermediate, the imidazoline intermediate and benzyl chloride react to obtain a quaternization product, and the quaternization product and thiourea react to generate a target compound. According to the present invention, when the adipic acid bis-imidazoline derivative prepared by the method is adopted as the corrosion inhibitor, the excellent anti-CO2 corrosion performance is provided at the low temperature.

Description

technical field [0001] The invention relates to a bisimidazoline adipic acid derivative, a preparation method thereof and the application of the derivative as a corrosion inhibitor. Background technique [0002] In the oil and gas field extraction industry, CO 2 Corrosion Due to the use of acidizing production stimulation measures, the acid liquid has a strong corrosion on the metal, causing huge economic losses to the oilfield exploitation. At present, the commonly used corrosion inhibitors in oil fields are mainly amide and imidazoline corrosion inhibitors, but most of the imidazoline corrosion inhibitors have a single imidazoline ring structure, and there are few adsorption points on the metal surface, and the double imidazole ring structure is introduced. To increase the adsorption center of the corrosion inhibitor. Biimidazole ring corrosion inhibitors have been widely used in acidification, but less research has been done on carbon dioxide corrosion resistance. The ...

Claims

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Application Information

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IPC IPC(8): C07D233/16C09K8/54
CPCC07D233/16C09K8/54C09K2208/32
Inventor 何毅马兰陈丽郭睿
Owner 成都恒固新材料科技有限公司
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