Preparation process for gas phase corosion inhibitor of morpholine adrivative

A technology of gas-phase corrosion inhibitor and morpholine derivatives, which is applied in the hydrocarbon-based field, can solve the problems of inconvenient use, and achieve the effect of fewer steps, lower requirements, and easy-to-obtain raw materials

Inactive Publication Date: 2005-01-05
SHANGHAI UNIVERSITY OF ELECTRIC POWER
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

South African patent ZA9406477 discloses a preparation method of morpholine derivatives as a gas-phase corrosion inhibitor, which is characterized in that morpholine and secondary amines act to generate morpholine Mannich bases, wherein the secondary amines include dimethylamine, di-n-butylamine, Diisopropylamine, dicyclohexylamine, diphenylamine, etc., but the product of this invention is an oily liquid, which is very inconvenient to use

Method used

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  • Preparation process for gas phase corosion inhibitor of morpholine adrivative
  • Preparation process for gas phase corosion inhibitor of morpholine adrivative

Examples

Experimental program
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Effect test

Embodiment 1

[0016] Take 1 mol of morpholine, mix it with 1.2 mol ~ 1.5 mol of diisopropylamine, dropwise add 1 mol ~ 1.5 mol of formaldehyde solution, add 1.5 mol of benzoic acid to the above mixture, and add 50ml ~ 80ml of deionized water at the same time, Stir for 2 hours to 4 hours, and filter to obtain 150 g of solid powder, which is the vapor phase corrosion inhibitor of morpholine derivatives, called corrosion inhibitor 1.

Embodiment 2

[0018] Take 1mol of morpholine, mix it with 1.2mol~1.5mol of di-n-butylamine evenly, add dropwise 1mol~1.5mol of formaldehyde solution, add 1.5mol of salicylic acid to the above mixture, and add 50ml~80ml of deionized water, stirred for 2 hours to 4 hours, and filtered to obtain 130 g of solid powder, which is the vapor phase corrosion inhibitor of morpholine derivatives, called corrosion inhibitor 2.

Embodiment 3

[0020] Take 1mol of morpholine, mix it with 1mol~1.5mol of dicyclohexylamine evenly, add dropwise 1mol~1.5mol of formaldehyde solution, add 1.5mol of benzoic acid to the above mixture, and add 50ml~80ml of deionized water at the same time, Stir for 2 hours to 4 hours, and filter to obtain 140 g of solid powder, which is the vapor phase corrosion inhibitor of morpholine derivatives, called corrosion inhibitor 3.

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Abstract

The invention is a morphine derivative gas-phase corrosion inhibitor preparing method, including the steps: mixing morphine with secondary amine, dropping in formaldehyde or aldehyde solution, making them uniformly mix and react, making acid curing reaction on the mixed solution and fatty acid / benzene carbonic acid, stirring, filtering and obtaining the object product. The raw materials such as morphine, secondary amine, formaldehyde / aldehyde, fatty acid and benzene carbonic acid are all easy to obtain and cheap, and suitable for large-scale industrialized production. The preparing course has only three steps and is relative simple, all the reactions can be completed on routine conditions, and the requirements for devices are low, thus further reducing the preparation cost. In addition, all the anticorrosive experiments show that the object product has excellent corrosion inhibiting property.

Description

technical field [0001] The invention relates to a method for preparing a compound having a hydrocarbon group substituted by a heteroatom connected to a ring nitrogen atom, in particular to a method for preparing a gas-phase corrosion inhibitor of a morpholine derivative. Background technique [0002] Atmospheric corrosion is the most widespread kind of corrosion, and the losses caused account for more than half of all corrosion losses. Vapor-phase corrosion inhibition technology is easy to use, clean and clean, and is an important direction for the development of anti-atmospheric corrosion technology. Morpholine and morpholine derivative vapor phase corrosion inhibitors are especially concerned by researchers because they do not contain nitrite that is harmful to the environment. Morpholine is an important cyclic amine for industrial use, with the characteristics of nitrogen-oxygen heterocycles. In the 1980s, Texaco in the United States successfu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23F11/02
Inventor 张大全高立新周国定车德竞
Owner SHANGHAI UNIVERSITY OF ELECTRIC POWER
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