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Preparation method and product of tea saponin myristate surfactant

A myristate and surfactant technology, applied in the field of surfactant preparation, can solve the problems of limited industrialization, complex process, high preparation cost, etc., and achieve the effect of easy control of reaction conditions, simple preparation process and good surface activity

Inactive Publication Date: 2016-01-06
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The process steps of this method are relatively complicated, and the cost is very high when realizing industrialization. At the same time, it uses phosphorus tribromide and benzyl bromide with irritation and toxicity, which further limits the industrialization of this method.
[0005] In short, the above two modification methods for tea saponin have complicated processes and high preparation costs, and the prepared modified surfactants cannot meet the current various needs for surfactants.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Add 1mmol of tea saponin, 6mmol of myristic acid chloride and 12mmol of anhydrous potassium carbonate to 10ml of N,N-dimethylformamide, and stir for 12 hours at 25 degrees Celsius. After the reaction, add 10ml of water to the reaction solution to dilute, add 0.1N dilute hydrochloric acid, adjust the pH of the diluted solution to 4-5, use the mixture of ethyl acetate and petroleum ether (volume ratio 1:2) 10ml Extract three times to remove unreacted myristic acid chloride; add AB-8 type macroporous adsorption resin to adsorb tea saponin myristate, the adsorption time is 5 hours at 25 degrees Celsius, TLC detection until the adsorption is complete. Suction filtration to remove the adsorption solution, add 2 volumes of 80% ethanol aqueous solution to the AB-8 type macroporous adsorption resin with tea saponin myristate to analyze the tea saponin esterification product, and filter to remove the analyzed AB -8 type macroporous adsorption resin, rotary evaporation to concentra...

Embodiment 2

[0029] Add 1mmol of tea saponin, 3mmol of myristic acid chloride, and 6mmol of anhydrous potassium carbonate to 5ml of dimethyl sulfoxide, and stir for 12 hours at 30 degrees Celsius. After the reaction, add 5ml of water to the reaction solution to dilute, add 0.1N dilute hydrochloric acid, adjust the pH of the diluted solution to 4-5, use a mixture of ethyl acetate and petroleum ether (volume ratio 1:2) 8ml Extract three times to remove unreacted myristic acid chloride; add AB-8 type macroporous adsorption resin to adsorb tea saponin myristate, the adsorption time is 5 hours at 25 degrees Celsius, TLC detection until the adsorption is complete. Suction filtration to remove the adsorption solution, add 2 volumes of 80% ethanol aqueous solution to the AB-8 type macroporous adsorption resin with tea saponin myristate to analyze the tea saponin esterification product, and filter to remove the analyzed AB -8 type macroporous adsorption resin, rotary evaporation to concentrate the a...

Embodiment 3

[0031] Add 1mmol of tea saponin, 6mmol of myristic acid chloride and 12mmol of anhydrous sodium carbonate to 10ml of N,N-dimethylformamide, and stir for 12 hours at 25 degrees Celsius. After the reaction, add 10ml of water to the reaction solution to dilute, add 0.1N dilute hydrochloric acid, adjust the pH of the diluted solution to 4-5, use the mixture of ethyl acetate and petroleum ether (volume ratio 1:2) 10ml Extract three times to remove unreacted myristic acid chloride; add AB-8 type macroporous adsorption resin to adsorb tea saponin myristate, the adsorption time is 5 hours at 25 degrees Celsius, TLC detection until the adsorption is complete. Suction filtration to remove the adsorption solution, add 2 times volume of 80% methanol aqueous solution to the AB-8 type macroporous adsorption resin with tea saponin myristate to analyze the tea saponin esterification product, and filter to remove the resolved AB -8 type macroporous adsorption resin, rotary evaporation to concen...

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PUM

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Abstract

The invention discloses a preparation method of a tea saponin myristate surfactant, comprising: adding a catalyst, tea saponin and myristic acid chloride into an organic solvent, and carrying out an esterification reaction until the reaction is complete; post-processing A tea saponin myristate surfactant was obtained. The present invention also provides a surfactant prepared by the above preparation method. The preparation process of the invention is simple and environment-friendly, and the tea saponin myristate surfactant prepared by the method has better surface activity and better market prospect.

Description

Technical field [0001] The invention relates to the technical field of surfactant preparation, in particular to a preparation method and product of a tea saponin myristate surfactant. Background technique [0002] Surfactants have the properties of dispersion, penetration, solubilization, foaming, etc., and are widely used in food, medicine, pesticides, daily chemicals, mineral processing, oil fields and other fields, and their types and consumption are increasing. But people have been using synthetic surfactants for a long time, which poses a greater threat to human health and the environment. People pay more and more attention to non-toxic and easily degradable surfactants. Carboxylate surfactants can be synthesized from natural raw materials, are easily biodegradable, and have always been favored by people. However, common carboxylate anionic surfactants have defects such as instability or even loss of surface activity under acidic conditions. [0003] Tea saponin, also known...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07J63/00C07H15/256C07H1/00C07H1/06B01F17/56C09K23/56
Inventor 刘松柏冯进陈盈
Owner ZHEJIANG UNIV