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Non-ionic surfactant and preparation method thereof

A non-ionic surfactant and active agent technology, applied in the field of synthesis of non-ionic surfactants, can solve the problems of low yield, long reaction time, high cost, etc., and achieve the effect of simple production process, simple preparation process and low cost

Inactive Publication Date: 2018-03-30
HARBIN NORMAL UNIVERSITY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The application of non-ionic surfactants in the prior art is more and more extensive, but the synthesis process of this type of surfactants also has complex reaction process, poor system stability, high cost, long reaction time, low yield, and environmental pollution. , low utilization rate of raw materials and other insurmountable technical problems cannot meet the higher demands of current industrial applications

Method used

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  • Non-ionic surfactant and preparation method thereof
  • Non-ionic surfactant and preparation method thereof
  • Non-ionic surfactant and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The preparation method of nonionic surfactant

[0021] (1) Add 0.02mol of adipic acid and 0.025mol of diethylene glycol bis(3-aminopropyl)ether into a 250ml three-necked flask, mix well, and react in an oil bath at 120°C under the protection of normal pressure nitrogen for 2 hours under stirring conditions. After the reaction, cool to room temperature in a nitrogen stream to obtain Intermediate 1, add 30ml of ethanol, and sonicate until completely dissolved to obtain Solution 1.

[0022] (2) Dissolve 0.01mol of HMDI and 0.005mol of polyetheramine D2000 in 30ml of ethanol respectively, place them in an ice-water bath, and add the ethanol solution of polyetheramine D2000 dropwise to the ethanol solution of HMDI in an ice-water bath environment, After the dropwise addition, solution 2 was obtained.

[0023] (3) Take another clean empty beaker, add solution 1 and solution 2 alternately dropwise to it under stirring condition, and obtain solution 3 after the addition is com...

Embodiment 2

[0027] The preparation method of nonionic surfactant

[0028] (1) Add 0.04mol adipic acid and 0.045mol diethylene glycol bis(3-aminopropyl)ether into a 250ml three-necked flask, mix well, and react in an oil bath at 120°C under the protection of atmospheric nitrogen for 2 hours under stirring conditions. After the reaction, cool to room temperature in a nitrogen stream to obtain intermediate 2, add 30ml of ethanol, and sonicate until completely dissolved to obtain solution 1'.

[0029] (2) Dissolve 0.01mol of HMDI and 0.005mol of polyetheramine D2000 in 30ml of ethanol respectively, place them in an ice-water bath, and add the ethanol solution of polyetheramine D2000 dropwise to the ethanol solution of HMDI in an ice-water bath environment, After the dropwise addition, solution 2' was obtained.

[0030] (3) Take another clean empty beaker, add solution 1' and solution 2' alternately dropwise to it under stirring condition, obtain solution 3' after the dropwise addition, remov...

Embodiment 3

[0032] The preparation method of nonionic surfactant

[0033] (1) Add 0.02 mol of adipic acid and 0.2 mol of diethylene glycol bis(3-aminopropyl) ether into a 250ml three-neck flask, mix well, and react in an oil bath at 120°C under the protection of atmospheric nitrogen for 2 hours under stirring conditions. After the reaction, cool to room temperature in a nitrogen stream to obtain intermediate 3, add 30ml of ethanol, and sonicate until completely dissolved to obtain solution 1''.

[0034] (2) Dissolve 0.01mol of HMDI and 0.005mol of polyetheramine D2000 in 30ml of ethanol respectively, place them in an ice-water bath, and add the ethanol solution of polyetheramine D2000 dropwise to the ethanol solution of HMDI in an ice-water bath environment, After the dropwise addition was complete, solution 2'' was obtained.

[0035] (3) Take another clean empty beaker, add solution 1'' and solution 2'' alternately dropwise under stirring conditions, and obtain solution 3'' after the dr...

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Abstract

The invention discloses a surfactant, in particular to a preparation method of a nonionic surfactant. The preparation method includes the steps of heating in an oil bath under nitrogen protection conditions, mixing and stirring in an ice water bath, alternate droplet adding of solutions, rotary evaporation, vacuum drying and the like. The prepared novel non-ionic surfactant has the characteristicsof being non-toxic, non-phosphorus, anti-static, low in foam, and the like, is simple in preparation process, simple in production process, low in cost, free of pollution and suitable for industrialscale production, can be used for cleaning of advanced instruments, and can be used as an emulsifier for pesticides and inks, and a solubilizer, a suspending agent and an anticoagulant for drugs.

Description

technical field [0001] The invention relates to the field of surfactants, in particular to a method for synthesizing nonionic surfactants. Background technique [0002] Nonionic surfactants are mainly divided into two categories: one is alcohol ether, phenol ether type, and the other is sugar derivatives. Non-ionic surfactants do not ionize in water, which promotes non-ionic surfactants to be superior to ionic surfactants in some aspects. They have high stability in solution and are not easily affected by strong electrolyte inorganic salts and acids and bases. It has the characteristics of good resistance to hard water and low foaming, so it is suitable for special detergents. Since non-ionic surfactants have multiple properties of dispersing, emulsifying, foaming, wetting, and solubilizing, they are used in cleaning many aerospace products, cleaning advanced instruments, and high-polarity special fabrics. [0003] The application of non-ionic surfactants in the prior art ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/75C08G18/50C08G18/60B01F17/52C09K23/52
CPCC08G18/5024C08G18/603C08G18/758C09K23/16
Inventor 魏树权应忠王尚贾宇王健李刚徐成建
Owner HARBIN NORMAL UNIVERSITY
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