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Preparation method and product of tea saponin laurate surfactant

A surfactant and lauric acid ester technology, which is applied in the preparation of sugar derivatives, chemical instruments and methods, sugar derivatives, etc., can solve the problem that modified surfactants cannot meet the various needs of surfactants, are not suitable for industrial production, The problem of high preparation cost can achieve the effect of easy control of reaction conditions, good surface activity and simple preparation process

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

However, this method uses triphenylchloromethane, phosphorus tribromide and benzyl bromide which are irritating and toxic, and has high requirements on equipment, and the process is relatively complicated, so it is not suitable for industrial production
[0005] In summary, 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 1 mmol of tea saponin, 6 mmol of lauric acid chloride, and 12 mmol of anhydrous potassium carbonate to 10 ml of N,N-dimethylformamide, and stir and react at 25 degrees Celsius for 12 hours. After the reaction, add 10ml of water to the reaction solution for dilution, add 0.1N dilute hydrochloric acid, adjust the pH value of the reaction solution to 4-5, and use 10ml of petroleum ether and ethyl acetate mixed solvent (volume ratio: 1.5:2) to extract Three times to remove lauric acid; add AB-8 macroporous adsorption resin to absorb tea saponin laurate, the adsorption time is 5 hours, TLC detection until the adsorption is complete. Remove the adsorption liquid by suction filtration, add 2 times the volume of 80% ethanol aqueous solution to analyze the esterification product of tea saponin in the AB-8 type macroporous adsorption resin adsorbed with tea saponin laurate, and filter to remove the AB-8 after analysis. Type 8 macroporous adsorption resin, concentrated analyti...

Embodiment 2

[0029] Add 1 mmol of tea saponin, 8 mmol of lauric acid chloride, and 16 mmol of anhydrous sodium carbonate into 10 ml of N,N-dimethylformamide, and stir and react at 25 degrees Celsius for 12 hours. After the reaction, add 10ml of water to the reaction solution for dilution, add 0.1N dilute hydrochloric acid, adjust the pH value of the reaction solution to 4-5, and use 10ml of petroleum ether and ethyl acetate mixed solvent (volume ratio: 1.5:2) to extract Three times to remove lauric acid; add AB-8 macroporous adsorption resin to absorb tea saponin laurate, the adsorption time is 5 hours, TLC detection until the adsorption is complete. Remove the adsorption solution by suction filtration, add 2 times the volume of 75% methanol aqueous solution to analyze the esterification product of tea saponin in the AB-8 type macroporous adsorption resin with tea saponin laurate, and filter to remove the AB-8 after analysis. Type 8 macroporous adsorption resin, concentrated analytical sol...

Embodiment 3

[0031] 1 mmol of tea saponin, 8 mmol of lauric acid chloride, and 15 mmol of sodium hydroxide were added to 10 ml of dimethyl sulfoxide, and stirred and reacted at 25 degrees Celsius for 12 hours. After the reaction, add 10ml of water to the reaction solution for dilution, add 0.1N dilute hydrochloric acid, adjust the pH value of the reaction solution to 4-5, and use 10ml of petroleum ether and ethyl acetate mixed solvent (volume ratio: 1.5:2) to extract Three times to remove lauric acid; add AB-8 macroporous adsorption resin to absorb tea saponin laurate, the adsorption time is 5 hours, TLC detection until the adsorption is complete. Remove the adsorption liquid by suction filtration, add 90% acetone aqueous solution of 2 times the volume to the AB-8 type macroporous adsorption resin adsorbed with tea saponin laurate to analyze the esterification product of tea saponin, and filter to remove the AB-8 after analysis. Type 8 macroporous adsorption resin, concentrated analytical ...

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Abstract

The invention discloses a preparation method of a tea saponin laurate surfactant, which comprises: adding a catalyst, tea saponin and lauric acid chloride into an organic solvent, and carrying out an esterification reaction until the reaction is complete; post-processing to obtain tea Saponin Laurate Surfactant. 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 laurate surfactant prepared by the method has better surface activity and better market prospects.

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 laurate surfactant. Background technique [0002] Surfactants have the properties of dispersion, penetration, solubilization, and foaming, and are widely used in food, medicine, pesticides, daily chemicals, mineral processing, oil fields, etc., and their types and consumption are increasing day by day. However, people have been using artificially synthesized surfactants for a long time, which poses a greater threat to human health and the environment. Non-toxic, easily degradable surfactants have attracted more and more attention. Carboxylate surfactants can be synthesized from natural raw materials and are easy to biodegrade, so they have always been favored by people. However, common carboxylate anionic surfactants have the disadvantages of being unstable or even losing surface activity under acidic conditions. ...

Claims

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Application Information

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