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Betaine surfactant and its synthesis method and application

A technology of surfactant and synthesis method, applied in the directions of ampholyte/electroneutral surface active compound, application, chemical instrument and method, etc., can solve the problem of high production cost of sulfobetaine, difficult removal of sodium chloride, Affect the purity of the reaction product and other problems, and achieve the effect of significant sterilization effect, good compatibility, rich and delicate foam

Inactive Publication Date: 2018-01-19
GUANGDONG YESER IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, unreacted amine and sodium chloroacetate are entrained in the product, which makes the product irritating to a certain extent, and the sodium chloride in the product is not easy to remove
The production cost of sultaine is high, the production process is complex and the yield is low
Sulfite betaine reacts with a mixture of tertiary amine and stoichiometric ratio of sulfur dioxide and ethylene oxide, but the disadvantage of this method is that sulfur dioxide and ethylene oxide are easily reacted to form polyalkylene oxide under the influence of amine. Sulfate esters affect the purity of the reaction product and require special refining and purification means
The synthesis method of phosphobetaine is usually formed by reacting hydroxyl-containing quaternary ammonium salts with phosphorylation reagents, but this reaction is a violent exothermic reaction. If the reaction temperature is not well controlled and the local temperature is too high, the generated phosphoric acid The carbon chain on the alkyl group in the ester is oxidized to form an olefin, resulting in a darker color of the product

Method used

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  • Betaine surfactant and its synthesis method and application
  • Betaine surfactant and its synthesis method and application
  • Betaine surfactant and its synthesis method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] 1. Add 11.8g of diethylenetriaminepentaacetic acid, 6g of sodium hydroxide aqueous solution and 30ml of ethanol into the reaction kettle for neutralization reaction, stir and heat up to 70°C, after 3 hours of reaction, stop the reaction to obtain a colorless and transparent Solution A.

[0033] 2. The above solution A was rotated to remove the solvent, recrystallized with acetone and ethanol, filtered, and dried at 25°C for 24 hours to obtain the product diethylenetriaminepentaacetic acid pentasodium salt with a yield of 83.1%.

[0034] 3. Add 6.3g of diethylenetriaminepentaacetic acid pentasodium salt, 4.2g of epichlorohydrin and 30ml of isopropanol into the reaction kettle to carry out quaternization reaction, maintain the pH of the system=9~10, stir and heat up to After 18 hours of reaction at 60°C, the reaction was stopped to obtain a transparent solution B.

[0035] 4. The above-mentioned solution B is subjected to rotary evaporation, solvent and unreacted epichlo...

Embodiment 2

[0037] 1. Add 11.8g of diethylenetriaminepentaacetic acid, 8g of sodium carbonate aqueous solution and 40ml of isopropanol into the reaction kettle for neutralization reaction. Stir and heat up to 80°C. After 2 hours of reaction, stop the reaction to obtain colorless Clear solution A.

[0038] 2. The above solution A was rotated to remove the solvent, recrystallized with acetone and ethanol, filtered, and dried at 60°C for 14 hours to obtain the product diethylenetriaminepentaacetic acid pentasodium salt with a yield of 81.5%.

[0039] 3. Add 6.3g of diethylenetriaminepentaacetic acid pentasodium salt, 4.2g of epichlorohydrin and 35ml of n-butanol into the reaction kettle to carry out quaternization reaction, maintain the pH of the system=9~10, stir and heat up to After 14 hours of reaction at 80°C, the reaction was stopped to obtain a transparent solution B.

[0040] 4. The above-mentioned solution B is subjected to rotary evaporation, solvent and unreacted epichlorohydrin a...

Embodiment 3

[0042] 1. Add 11.8g of diethylenetriaminepentaacetic acid, 12.6g of aqueous solution prepared by sodium bicarbonate and 50ml of n-butanol into the reaction kettle for neutralization reaction, stir and raise the temperature to 90°C, and stop the reaction after 0.5h of reaction. A colorless and transparent solution A was obtained.

[0043] 2. The above solution A was rotary evaporated to remove the solvent, recrystallized with acetone and ethanol, filtered, and dried at 80°C for 8 hours to obtain the product diethylenetriaminepentaacetic acid pentasodium salt with a yield of 83.4%.

[0044] 3. Add 6.3g of diethylenetriaminepentaacetic acid pentasodium salt, 4.2g of epichlorohydrin and 25ml of n-amyl alcohol into the reaction kettle to carry out quaternization reaction, maintain the pH of the system=9~10, stir and heat up to After reacting for 10 hours at 90°C, stop the reaction to obtain a transparent solution B.

[0045] 4. The above-mentioned solution B is subjected to rotary...

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Abstract

The invention discloses a betaine surfactant and its synthesis method and application. The method comprises mixing diethylenetriaminepentaacetic acid, alkaline liquor and a solvent, heating the mixture to 70-90 DEG C for a reaction, carrying out rotary evaporateion on the solution, carrying out recrystallization through acetone and ethanol, carrying out filtration and drying to obtain pentasodiumdiethylenetriaminepentaacetate, mixing the pentasodium diethylenetriaminepentaacetate, epichlorohydrin and a solvent, keeping system pH in 9-10, carrying out heating to 60-90 DEG C for a reaction, carrying out rotary evaporateion on the solution, carrying out washing, carrying out recrystallization through acetone and carrying out filtration and drying to obtain the betaine surfactant. The synthesis method is simple and is carried under mild reaction conditions. The product is easy to purify. The yield is high. The betaine surfactant has the advantages of good wetting property, rich and fine foam, significant bactericidal effect, high surface activity and good compatibility with other types of surfactants and can be applied in the field of detergents.

Description

technical field [0001] The invention belongs to the technical field of surfactants, and more specifically relates to a betaine surfactant and its synthesis method and application. Background technique [0002] Betaine is an amphoteric surfactant containing strongly basic N atoms. Because of its structure with both anionic and cationic groups, it exhibits the characteristics of cationic groups in acidic solutions and anionic surfactants in alkaline solutions. It can maintain good surface activity in a wide pH range and is widely used in food, medicine, chemical and other fields. [0003] The types of betaine amphoteric surfactants are mainly divided into carboxylic acid betaine, sulfobetaine, sulfite betaine and phosphate betaine, etc., but the synthesis of existing betaine surfactants is technically difficult. Some deficiencies. The most commonly used synthesis method of carboxylic acid betaine is formed by the reaction of sodium chloroacetate and long-chain alkyl tertiary...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D301/27C07D303/36B01F17/18B01F17/28B01F17/32A01N43/20A01P1/00A01P3/00C11D1/90C09K23/18C09K23/28C09K23/32
Inventor 谢妃军余培荣成晓玲梁子钦宋志航杨培滨肖秋菊
Owner GUANGDONG YESER IND CO LTD
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