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Preparation method of low-water-content amino acid surfactant liquid

A surfactant and amino acid technology, applied in the field of organic compound synthesis, can solve problems such as limiting application potential, achieve low water content, improve thermal stability, and be easily soluble in water

Pending Publication Date: 2021-10-22
广州花语精细化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For powder products, the active substance is usually N-acyl amino acid alkali metal salt, although its water content is low, it is insoluble in alcohol and lipid systems and solid precipitates, which limits its application potential in non-aqueous systems

Method used

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  • Preparation method of low-water-content amino acid surfactant liquid
  • Preparation method of low-water-content amino acid surfactant liquid
  • Preparation method of low-water-content amino acid surfactant liquid

Examples

Experimental program
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Effect test

preparation example Construction

[0031] A kind of preparation method of amino acid surfactant liquid with low water content, comprises the following steps:

[0032] (1) Warm up the N-acyl amino acid salt to the acidification temperature, add acid to adjust the pH value, heat and stir, let stand, separate the lower waste liquid, add deionized water, keep warm and stir, stand still, separate the lower waste liquid, wash Carry out underpressure distillation after finishing, obtain N-acylamino acid;

[0033] (2) After adjusting the temperature of the N-acyl amino acid system to the stirring temperature, start the stirring, first add the alcohol and then slowly add the organic base, keep the temperature constant during the stirring process, and after stirring evenly, adjust the system temperature to aging while adding the auxiliary agent temperature, it can be discharged after aging for a period of time.

[0034] In step (2), the alcohol is one or more of unit alcohols or polyols with less than 5 carbon atoms; th...

Embodiment 1

[0084] (1) Warm the sodium N-lauroyl glycinate with 30% solid content to the acidification temperature of 50°C, add dilute hydrochloric acid to adjust the pH to 1-2, keep stirring for 10 minutes, let stand for 15 minutes, separate the waste liquid from the lower layer, and add approximately 1 times the weight of deionized water, heat preservation and stirring for 10 minutes, let stand for 15 minutes, separate the lower layer of waste liquid, and carry out vacuum distillation after cleaning. The distillation time of vacuum distillation is 3 hours, and the distillation temperature is 80 ° C to obtain N-laurel Acylglycine;

[0085] (2) After adjusting the temperature of the system to the stirring temperature with N-lauroyl glycine, start stirring, first add propylene glycol, the mass fraction of propylene glycol is 10% of the total mass fraction of the material, then slowly add N-lauroyl glycine equimolar Triisopropanolamine, keep the temperature constant at 40°C during the stirr...

Embodiment 2

[0087] Except that N-cocoyl glycine is selected as the N-acyl amino acid, other parameter settings in this embodiment are the same as those in Embodiment 1.

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Abstract

The invention relates to a preparation method of low-water-content amino acid surfactant liquid. The preparation method comprises the following steps: (1) heating N-acylamino acid salt to acidification temperature, adding acid to adjust a pH value, carrying out heat-preserved stirring, conducting standing, removing lower-layer waste liquid, adding deionized water, carrying out heat-preserved stirring again, performing standing, removing lower-layer waste liquid, cleaning, and carrying out reduced-pressure distillation to obtain N-acylamino acid; and (2) adjusting the system temperature of the N-acylamino acid to a stirring temperature, starting stirring, firstly adding alcohol, then slowly adding organic alkali, keeping the temperature constant in a stirring process, conducting uniform stirring, adjusting system temperature to an aging temperature while adding an auxiliary agent, performing aging for a period of time, and then carrying out discharging. The amino acid surfactant prepared by the method disclosed by the invention has high active substance content, low water content and low salt content; and meanwhile, the system is kept in a liquid state, is easily dissolved in alcohol and fat, and has huge application space.

Description

technical field [0001] The invention relates to the technical field of organic compound synthesis, in particular to a method for preparing a low water content amino acid surfactant liquid. Background technique [0002] At present, the concentration of detergent products is the core strategy for the detergent industry to achieve sustainable development. According to statistics from Deutsche Bank, after the United States implemented detergent concentration, the daily chemical industry reduced fuel consumption by 125,000 cubic meters, reduced plastic consumption by 76,000 tons, comprehensively reduced product transportation costs by 35%, and reduced total production costs by 13.9%. The existing concentrated products are mainly laundry beads, concentrated laundry liquid, concentrated laundry powder, etc. Among them, the laundry beads wrap the concentrated laundry liquid with a polyvinyl alcohol film, which significantly improves the utilization rate of the product and reduces t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C233/47C07C231/12C07C231/22B01F17/22B01F17/28C07C213/00C07C215/12C07C215/08C09K23/22C09K23/28
CPCC07C231/12C07C231/22C07C213/00C07C233/47C07C215/08C07C215/12
Inventor 胡文杰张涌刘振华张太军
Owner 广州花语精细化工有限公司