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Phosphate-based quaternary ammonium salt cationic surfactant and synthesizing method thereof

A technology of surfactants and quaternary ammonium salts, which is applied in the field of phosphate-based quaternary ammonium salt cationic surfactants and their synthesis, can solve the problems of product purification difficulty, synthesis process to be studied, complexity, etc., and achieve good emulsification performance, Simple synthesis process and good biodegradability

Active Publication Date: 2016-07-20
GUANGDONG YESER IND CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the research on phosphate-based surfactants is mainly anionic and non-ionic, but there are few reports on quaternary ammonium salt cationic surfactants containing phosphate-based structures. The reason may be that the synthesis process has yet to be developed. Research and improvement, difficult and complicated product purification, etc., therefore, it is necessary to study the synthesis method of quaternary ammonium salt cationic surfactant containing phosphate group structure

Method used

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  • Phosphate-based quaternary ammonium salt cationic surfactant and synthesizing method thereof
  • Phosphate-based quaternary ammonium salt cationic surfactant and synthesizing method thereof
  • Phosphate-based quaternary ammonium salt cationic surfactant and synthesizing method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0026] Taking the following phosphate ester quaternary ammonium salt cationic surfactant as an example of synthetic chemical structural formula, the specific synthetic method is:

[0027]

[0028] (1) Add 34.5g of diethyl chlorophosphate, 100mL of toluene and 6.67g of triethylamine into a reaction kettle filled with nitrogen, place in an ice-water bath, stir, add 11.92g of N-methyldiethanolamine, and react for 3 to 6 hours. It is measured that the content of free amine is less than 0.2%, the reaction is terminated, the organic solvent is removed by distillation under reduced pressure, and suction filtration is performed to obtain the target product tertiary phosphate-based amine.

[0029] (2) Add 19.6g tertiary amine phosphate group, 9.7g 1-bromooctane and 60mL ethanol into the reaction kettle, stir, heat up to 78°C, reflux for 30h, stop the reaction, remove the organic solvent by distillation under reduced pressure, and then use Diethyl ether is recrystallized to finally o...

Embodiment 2

[0031] Taking the following phosphate ester quaternary ammonium salt cationic surfactant as an example of synthetic chemical structural formula, the specific synthetic method is:

[0032]

[0033] (1) Add 34.5g of diethyl chlorophosphate, 110mL of toluene and 5g of pyridine into a reaction kettle filled with nitrogen, place in an ice-water bath, stir, add 11.92g of N-methyldiethanolamine, react for 3 to 6 hours, and measure free The content of the amine is less than 0.2%, the reaction is terminated, the organic solvent is removed by distillation under reduced pressure, and the target product is obtained by suction filtration to obtain the target tertiary phosphate-based amine.

[0034] (2) Add 19.6g of tertiary phosphate amine, 7.45g of 1-chlorooctane and 80mL of acetone into the reaction kettle, stir, heat up to 82°C, reflux for 32h, stop the reaction, remove the organic solvent by distillation under reduced pressure, and then use Diethyl ether is recrystallized to finally...

Embodiment 3

[0036] Taking the following phosphate ester quaternary ammonium salt cationic surfactant as an example of synthetic chemical structural formula, the specific synthetic method is:

[0037]

[0038] Place in an ice-water bath, stir, add 11.92g of N-methyldiethanolamine, react for 3-6 hours, the measured content of free amine is less than 0.2%, end the reaction, distill off the organic solvent under reduced pressure, and filter with suction to obtain the target product Phosphate-based tertiary amine.

[0039] (2) Add 19.6g of phosphate-based tertiary amine, 11.09g of 1-bromodecane and 60mL of isopropanol into the reactor, stir, heat up to 85°C, reflux for 34 hours, stop the reaction, and remove the organic solvent by distillation under reduced pressure. Recrystallize with diethyl ether to finally obtain the phosphate-based quaternary ammonium salt cationic surfactant.

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Abstract

The invention relates to the field of cationic surfactants, in particular to a phosphate-based quaternary ammonium salt cationic surfactant and a synthesizing method thereof. The phosphate-based quaternary ammonium salt cationic surfactant structurally contains phosphate groups and quaternary ammonium salt groups. The phosphate-based quaternary ammonium salt cationic surfactant has the advantages that by adopting a two-step synthesizing method, the synthesizing technology is simple, the separating and purifying of the product are easy, and the used organic solvent can be recycled and reutilized; the surface activity of the synthesized product is higher, the biodegradability is good, the ecological toxicity is low, and the lime soap dispersing force is good; the emulsion property of the product is good, the surfactant can be singly used as an emulsion agent, and can be compounded with chemical articles with special application property, and the sterilization function is good.

Description

technical field [0001] The invention relates to the field of cationic surfactants, in particular to a phosphate-based quaternary ammonium salt cationic surfactant and a synthesis method thereof. Background technique [0002] Phosphate ester surfactants are a general term for surfactants containing phosphate groups or phosphate salt groups in their molecular structures. They are a class of surfactants with excellent performance and are widely used. Its excellent properties mainly include good emulsification, antistatic properties, low ecotoxicity and good biodegradability. [0003] Quaternary ammonium salt cationic surfactant is a kind of surfactant with fast development speed, wide range of applications and excellent performance. It has always been a research hotspot in the field of surfactants. The quaternary ammonium salt type cationic surfactant has a strong adsorption effect on negatively charged bacteria on the cell wall due to the positive charge of the hydrophilic gr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01F17/18B01F17/20C07F9/11C07F9/12C09K23/18C09K23/20
CPCC07F9/11C07F9/12C09K23/14
Inventor 谢妃军成晓玲余培荣梁子钦宋志航杨培滨
Owner GUANGDONG YESER IND CO LTD
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