Dicarboxy hexadecoic acid acidamide surfactant and synthetic method

A technology of palmitic acid amide and surfactant, applied in chemical instruments and methods, dissolution, chemical/physical processes, etc., can solve the problems of small variety and quantity, and achieve low irritation and good compatibility

Active Publication Date: 2008-09-03
骏和锦(苏州)科技有限公司
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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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  • Dicarboxy hexadecoic acid acidamide surfactant and synthetic method
  • Dicarboxy hexadecoic acid acidamide surfactant and synthetic method
  • Dicarboxy hexadecoic acid acidamide surfactant and synthetic method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] In the four-neck flask equipped with mechanical stirring, thermometer and vacuum distillation device, add palmitic acid 153.6g (0.6mol) and hydroxyethylethylenediamine (molar ratio is 1: 1) and start heating and stirring, slowly The reaction temperature was raised to 100°C, and the vacuum pump was turned on 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 an intermediate for synthesizing dicarboxyl palmitic acid amide surfactant.

[0026] In the four-neck flask that stirs, thermometer, reflux condenser and dropping funnel are equipped with, add the intermediate 20.6g (0.06mol) that is used for the synthesis of dicarboxy palmitic acid amide surfactant prepared above and heat and stir, At a temperature between 50 and 90°C, add chloroacetic acid solution dropwise at low temp...

Embodiment 2

[0028] In the four-neck flask equipped with mechanical stirring, thermometer and vacuum distillation device, add palmitic acid 153.6g (0.6mol) and hydroxyethylethylenediamine (molar ratio is 1: 1.1) and start heating and stirring, slowly The reaction temperature was raised to 110° C., and the vacuum pump was turned on to adjust the vacuum degree of the reaction system until the water came out. 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 an intermediate for synthesizing dicarboxyl palmitic acid amide surfactant.

[0029] In the four-neck flask that stirs, thermometer, reflux condenser and dropping funnel are equipped with, add the intermediate 20.6g (0.06mol) that is used for the synthesis of dicarboxy palmitic acid amide surfactant prepared above and heat and stir, At a temperature between 50 and 90°C, add chloroacetic acid solution dropwise at low temp...

Embodiment 3

[0031] In the four-neck flask equipped with mechanical stirring, thermometer and vacuum distillation device, add palmitic acid 153.6g (0.6mol) and hydroxyethylethylenediamine (molar ratio is 1: 1.2) and start heating and stirring, slowly The reaction temperature was raised to 100°C, and the vacuum pump was turned on 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 4.5 hours until the water came out completely. Heating is stopped, and the temperature is lowered to obtain an intermediate for synthesizing dicarboxyl palmitic acid amide surfactant.

[0032] In the four-neck flask that stirs, thermometer, reflux condenser and dropping funnel are equipped with, add the intermediate 20.6g (0.06mol) that is used for the synthesis of dicarboxy palmitic acid amide surfactant prepared above and heat and stir, At a temperature between 50 and 90°C, add chloroacetic acid solution dropwise at low te...

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Abstract

A dicarboxyl hexadecanamide surfactant and synthetic method thereof are provided. The inventive dicarboxyl hexadecanamide surfactant has the structural formula as above. The synthetic method is novel in the direct synthesis of amide surfactants by vacuum-amphoteric method without ring closing reactions. The method includes the following steps: synthesizing a dicarboxyl hexadecanamide surfactant intermediate from hexadecanoic acid and hydroxyethylethylene diamine as raw materials, and then performing amphoteric reaction by 'chloroacetic acid process' to obtain the dicarboxyl hexadecanamide surfactant, wherein the mole ratio of intermediate to chloroacetic acid to NaOH is 1: 2-2.6:4-5.2. The inventive dicarboxyl hexadecanamide surfactant has low forming performance and low irritation, and good compounding, washing, wetting and penetrating performance; and can be widely used as cleaning agent in daily chemical industry, as well as emulsifier, dispersant and industrial surface cleaning agent.

Description

【Technical field】: [0001] The invention belongs to the technical field of surfactants and their preparation. 【Background technique】: [0002] The dicarboxy palmitic 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-develo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01F17/22C09K23/22
Inventor 李平郭建龙李栋
Owner 骏和锦(苏州)科技有限公司
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