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Preparation method of amino acid surfactant

A surfactant and amino acid technology, applied in the field of surfactant preparation, can solve the problems of "three wastes" discharge, difficult purification, long process, etc., and achieve the effect of solving environmental and health problems

Active Publication Date: 2017-03-08
ZHANGJIAGANG GREAT CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the synthesis process of acyl amino acid salt is relatively mature, but there are also disadvantages such as long process and difficult purification. The "three wastes" are seriously discharged during the extraction or washing process, and the production method needs to be further improved.

Method used

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  • Preparation method of amino acid surfactant
  • Preparation method of amino acid surfactant

Examples

Experimental program
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Effect test

Embodiment 1

[0023] In synthesis reactor 1, add the N-methyl taurate sodium solution (40%) of 400kg, 50kg deionized water, then dropwise the 32% liquid caustic soda of 200kg lauroyl chloride and 100kg by overhead tank, dropwise process control The pH is 9-12, the temperature is ≤60°C, and the dropping time is controlled at 3 hours; after the dropping, add 10kg of concentrated hydrochloric acid (36%) to adjust the pH of the system to 7.5-8.5, raise the temperature to 70°C, and keep the temperature for aging for 2 hours; The temperature was lowered to 40° C. to obtain 760 kg of the crude product of sodium lauroyl methyl taurate;

[0024] Turn on the air compressor, pass the compressed air into the disc aerator, ventilate for 5 to 10 minutes, you can see that the bubbles start to reach the overflow port, and when the foam overflows to the reactor 2 through the trumpet overflow port, start the reaction The foam-breaking stirrer of still 2, open water circulation vacuum pump and steam heating s...

Embodiment 2

[0027] In synthesis reactor 1, add the liquid caustic soda of 500kg, the deionized water of 120kg, the L-glutamic acid of 300kg, drip the 32% liquid caustic soda of 370kg cocoyl chloride (M=218) and 300kg by header tank then, During the dropping process, the pH is controlled at 9.5-11, the temperature is at 50-60°C, and the dropping time is controlled at 6 hours; at the end of the dropping, the temperature is kept at 50-60°C for aging reaction for 4 hours, and the temperature is raised to 70-75°C, and the temperature is kept at 2 hour; be cooled to 55~60 ℃ and obtain the crude product 1590kg of sodium cocoyl glutamate;

[0028] Turn on the air compressor, pass the compressed air into the disc aerator, ventilate for 5 minutes, you can see that the bubbles begin to reach the overflow port, and when the foam overflows to the reactor 2 through the trumpet overflow port, open the reactor 2 The bubble-breaking stirrer is used, and the water circulation vacuum pump and steam heating ...

Embodiment 3

[0031] In the synthesis reaction kettle 1, add 190kg of liquid caustic soda, 860kg of deionized water, and 125kg of glycine, then drop 325kg of myristoyl chloride and 200kg of 32% liquid caustic soda through the overhead tank, and control the pH at 9.5 to 11 during the dropping process. , the dropping time is 2 hours; the dropping is completed, the temperature is kept at 50-60°C for aging reaction for 4 hours, the temperature is raised to 80-85°C, and the temperature is kept for 2 hours; the temperature is lowered to 55-60°C to obtain 1700kg of crude product of sodium myristoyl glycinate;

[0032]Turn on the air compressor, pass the compressed air into the disc aerator, ventilate for 5 to 10 minutes, you can see that the bubbles start to reach the overflow port, and when the foam overflows to the reactor 2 through the trumpet overflow port, start the reaction The foam-breaking stirrer of still 2, open water circulation vacuum pump and steam heating system simultaneously. The p...

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Abstract

The invention relates to a preparation method of a production of an amino acid surfactant, in particular to a preparation method of a high-purity N-acyl amino acid surfactant, and belongs to the technical field of surfactant preparation. According to the preparation method, crystallization and recrystallization are conducted without an organic solvent, the characteristics that the N-acyl amino acid surfactant is easy to foam, and reaction by-products sodium chloride and the like are not likely to foam are fully utilized, and the components of active matter of the surfactant generate foam through a foam generating device, so that the purpose of separating the surfactant from impurities is achieved, the product with the high purity is obtained, and the environment and health problems caused by conducting crystallization and recrystallization with the organic solvent previously are solved.

Description

technical field [0001] The invention relates to a preparation method of an amino acid surfactant product, in particular to a preparation method of a high-purity N-acyl amino acid surfactant, and belongs to the technical field of surfactant preparation. Background technique [0002] N-acyl amino acid series products are anionic surfactants with excellent performance formed by the condensation of amino acids, which are extremely gentle on the skin and will not cause allergies and phototoxicity; have excellent adaptability to hard water; have good biodegradability and safety , can be decomposed into amino acids and fatty acids in the human body for absorption and utilization; it has good cleaning power and foaming power, is non-toxic and harmless to the human body, has no peculiar smell, is soft and non-irritating, and can stabilize the activity of enzymes. It is a high-grade shampoo and The main raw material of the shower gel can be firmly adsorbed on the hair and skin, increa...

Claims

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Application Information

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IPC IPC(8): C07C303/32C07C303/44C07C309/15C07C231/02C07C231/24C07C233/47
CPCC07C231/02C07C231/24C07C303/32C07C303/44C07C309/15C07C233/47
Inventor 徐由江朱红军郭静波崔宜斌盛绕陈培华张海平朱志乾邵鹏陆菲菲
Owner ZHANGJIAGANG GREAT CHEM
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