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Oleic acid acidamide surfactant and synthetic method

A technology of surfactants and oleic acid amide, which is applied in chemical instruments and methods, dissolution, chemical/physical processes, etc., can solve the problems of limited varieties and quantities, achieve excellent antirust performance, improve stability, and prevent recurrence deposition effect

Inactive Publication Date: 2009-12-09
TIANJIN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Since the 1970s, domestic research on amphoteric surfactants has been carried out. At present, a small number of products have been put into the market, but the varieties and quantities are not many. Therefore, my country is still in its infancy in the research and application of amphoteric surfactants.

Method used

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  • Oleic acid acidamide surfactant and synthetic method
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  • Oleic acid acidamide surfactant and synthetic method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] In a four-necked flask equipped with a mechanical stirrer, a thermometer and a vacuum distillation device, add 173.0 g (0.6 mol) of oleic acid and hydroxyethylethylenediamine (a molar ratio of 1:1) to start heating and stirring, and slowly react The temperature was raised to 100°C, and the vacuum pump was started to adjust the vacuum degree of the reaction system until the water came out, and the reaction temperature was gradually raised to 150°C within 3 hours until the water came out completely. Heating is stopped, and the temperature is lowered to obtain the oleic acid amide surfactant intermediate.

[0027] In a four-neck flask equipped with stirring, thermometer, reflux condenser and dropping funnel, add 22.2g (0.06mol) of oleic acid amide surfactant intermediate and heat and stir. Add chloroacetic acid solution dropwise at low temperature, then gradually increase the temperature and add NaOH solution dropwise, the oleic acid amide surfactant intermediate: chloroac...

Embodiment 2

[0029] In a four-necked flask equipped with a mechanical stirrer, a thermometer and a vacuum distillation device, add 173.0 g (0.6 mol) of oleic acid and hydroxyethylethylenediamine (the molar ratio is 1:1.1) and start heating and stirring, and slowly react The temperature was raised to 110°C, and the vacuum pump was started to adjust the vacuum degree of the reaction system until the water came out, and the reaction temperature was gradually raised to 150°C within 3.5 hours until the water came out completely. Heating is stopped, and the temperature is lowered to obtain the oleic acid amide surfactant intermediate.

[0030] In a four-neck flask equipped with stirring, thermometer, reflux condenser and dropping funnel, add 22.2g (0.06mol) of oleic acid amide surfactant intermediate and heat and stir. Add chloroacetic acid solution dropwise at low temperature, then gradually increase the temperature and add NaOH solution dropwise, the oleic acid amide surfactant intermediate: c...

Embodiment 3

[0032] In a four-neck flask equipped with a mechanical stirrer, a thermometer and a vacuum distillation device, add 173.0 g (0.6 mol) of oleic acid and hydroxyethylethylenediamine (a molar ratio of 1:1.2) to start heating and stirring, and slowly react The temperature was raised to 100°C, and the vacuum pump was started to adjust the vacuum degree of the reaction system until the water came out, and the reaction temperature was gradually raised to 150°C within 4 hours until the water came out completely. Heating is stopped, and the temperature is lowered to obtain the oleic acid amide surfactant intermediate.

[0033] In a four-neck flask equipped with stirring, thermometer, reflux condenser and dropping funnel, add 22.2g (0.06mol) of oleic acid amide surfactant intermediate and heat and stir. Add chloroacetic acid solution dropwise at low temperature, then gradually increase the temperature and add NaOH solution dropwise, the oleic acid amide surfactant intermediate: chloroac...

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Abstract

Oleic acid amide surfactant and its synthesis method. The structural formula of the oleic acid amide surfactant of the present invention is as follows. The synthesis method of the invention is as follows: firstly, oleic acid and hydroxyethylethylenediamine are used as raw materials to synthesize the oleic acid amide surfactant intermediate, and then amphoterized by "chloroacetic acid method" to obtain the oleic acid amide surfactant. On the basis of summarizing previous research results, the present invention innovatively adopts a vacuum-amphiterization method to directly synthesize amide-type surfactants without going through a ring-closing process. The oleic acid amide surfactant provided by the invention has the functions of better emulsifying, dispersing and suspending oil stains on mineral oil and vegetable oil, and helps to prevent redeposition of oil stains, and has excellent antirust performance on metals such as steel and cast iron . In addition, it can improve the stability of anionic and nonionic emulsions and the lubricity of emulsified oils. It can be widely used in metal cleaning agent, drilling oil, cutting oil, heavy oil viscosity reducer in oil exploitation and other products.

Description

【Technical field】: [0001] The invention belongs to the technical field of surfactants and their preparation. 【Background technique】: [0002] The oleic acid amide surfactant involved in the present invention is a novel surfactant whose performance is comparable to that of the carboxylic acid type imidazoline amphoteric surfactant. [0003] Aliphatic hydrocarbon-based imidazoline amphoteric surfactants have excellent cleaning, wetting, foaming and dispersing properties [1，2] , very low irritation [3] , low toxicity or non-toxic [4] , antistatic [5] , antibacterial [6] , friendly to the environment. [0004] Amphoteric surfactants are classified according to their structures: (1) imidazoline amphoteric surfactants (2) betaine amphoteric surfactants (3) amino acid surfactants (4) lecithin surfactants. Among them, the lecithin surfactant is a natural surfactant, and the rest are artificially synthesized [7] . [0005] Amphoteric surfactants are a late-developed class of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01F17/22C09K23/22
Inventor 李平郭建龙李栋
Owner TIANJIN UNIVERSITY OF TECHNOLOGY