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Preparation method of tea saponin ester succinate surfactant and product thereof

A surfactant and succinate 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, complex processes, The problem of high preparation cost can achieve the effect of easy control of reaction conditions, simple preparation process and good surface activity

Inactive Publication Date: 2012-10-17
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the above two modification methods for tea saponin have complex processes and high preparation costs, and the prepared modified surfactants cannot meet the various needs of surfactants at present.

Method used

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  • Preparation method of tea saponin ester succinate surfactant and product thereof
  • Preparation method of tea saponin ester succinate surfactant and product thereof
  • Preparation method of tea saponin ester succinate surfactant and product thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029]1 mmol of tea saponin, 5 mmol of succinic anhydride, and 5 mmol of anhydrous potassium carbonate were added to 20 ml of N,N-dimethylformamide, and the mixture was stirred and reacted at 25 degrees Celsius for 12 hours. After the reaction, add 10ml of water to the reaction solution for dilution, add AB-8 type macroporous adsorption resin to absorb tea saponin succinate, 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 80% ethanol to analyze the esterification product of tea saponin in the AB-8 type macroporous adsorption resin adsorbed with tea saponin succinate, rotate the evaporation to concentrate the analysis solution, and then The solid tea saponin succinate surfactant was obtained by vacuum freeze-drying. figure 1 It is the infrared spectrogram of tea saponin, figure 2 It is the infrared spectrogram of the tea saponin succinate surfactant prepared in embo...

Embodiment 2

[0031] Add 1 mmol of tea saponin, 10 mmol of succinic anhydride, and 10 mmol of anhydrous potassium carbonate into 30 ml of N,N-dimethylformamide, and stir and react at 25 degrees Celsius for 12 hours. After the reaction, add 15ml of water to the reaction solution for dilution, add AB-8 type macroporous adsorption resin to absorb tea saponin succinate, the adsorption time is 5 hours, TLC detection until the adsorption is complete. Remove the adsorption solution by suction filtration, add three times the volume of 90% ethanol to analyze the esterification product of tea saponin in the AB-8 type macroporous adsorption resin adsorbed with tea saponin succinate, rotate the evaporation to concentrate the analysis solution, and then The solid tea saponin succinate surfactant was obtained by vacuum freeze-drying. image 3 The infrared spectrum of the tea saponin succinate surfactant prepared in embodiment 2.

Embodiment 3

[0033] 1 mmol of tea saponin, 20 mmol of succinic anhydride, and 20 mmol of anhydrous potassium carbonate were added to 35 ml of N,N-dimethylformamide, and stirred and reacted at 30 degrees Celsius for 16 hours. After the reaction, add 15ml of water to the reaction solution for dilution, add AB-8 type macroporous adsorption resin to absorb tea saponin succinate, the adsorption time is 6 hours, TLC detection until the adsorption is complete. Remove the adsorption solution by suction filtration, add four times the volume of 85% ethanol to analyze the esterification product of tea saponin in the AB-8 type macroporous adsorption resin adsorbed with tea saponin succinate, rotate the evaporation to concentrate the analysis solution, and then The solid tea saponin succinate surfactant was obtained by vacuum freeze-drying. Product infrared spectrogram is similar to embodiment 2.

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Abstract

The invention discloses a preparation method of a tea saponin ester succinate surfactant, comprising the following steps of: (1) adding a catalyst, tea saponin and succinic anhydride into an organic solvent to carry out an esterification reaction until the reaction is completely finished; (2) absorbing tea saponin ester succinate obtained from the step (1) by the use of macroporous resin; and (3) dissolving the macroporous resin absorbed with tea saponin ester succinate into a desorption agent for desorption reaction, filtering, and removing a solvent in the desorption agent so as to obtain the tea saponin ester succinate surfactant. The invention also provides the surfactant prepared by the above preparation method. The preparation technology provided by the invention is simple and environmentally friendly. The tea saponin ester succinate surfactant prepared by the method has both characteristics of a non-ionic surfactant and an anionic surfactant, can still maintain good surface activity under the acidic condition, and has a good 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 succinate 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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IPC IPC(8): C07J63/00C07J71/00C07J21/00C07H15/256C07H1/00B01F17/56C09K23/56
Inventor 刘松柏刘昕
Owner ZHEJIANG UNIV
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