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A kind of mercapto-ene click prepared fluorine-containing azo surfactant and method

A technology of surfactants and fluorine-containing azo, which is applied in the field of synthesis of functional surfactants, can solve problems such as unfavorable cycle environmental protection, chemical pollution, etc., and achieve the effects of avoiding pollution damage, simple post-processing, and improving foam stability

Active Publication Date: 2022-06-24
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Now the industry mainly meets the production needs by adding stabilizers and defoamers, but there are serious chemical pollution, which is not conducive to recycling and environmental protection

Method used

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  • A kind of mercapto-ene click prepared fluorine-containing azo surfactant and method
  • A kind of mercapto-ene click prepared fluorine-containing azo surfactant and method
  • A kind of mercapto-ene click prepared fluorine-containing azo surfactant and method

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Embodiment 1

[0042] A kind of method for preparing fluorine-containing azo surfactant by mercapto-ene click, the synthesis schematic diagram is shown in figure 1 , including the following steps:

[0043] Step 1: Preparation of trifluoromethoxy azophenol;

[0044] (11) at about -5°C, dissolve trifluoromethoxyaniline in a mixture of 20ml of concentrated sulfuric acid and 20ml of distilled water, and stir evenly;

[0045] (12) To the above mixture, slowly add a solution containing water (56 mL) and sodium nitrite (5.020 g, 0.075 mol), and stir for 30 min;

[0046] (13) add phenol (0.075mol) dropwise to 2mol / L sodium hydroxide solution, mix well, then add to the above mixture, add anhydrous sodium carbonate (47g), and stir for 2h at pH 9-10;

[0047] (14) Neutralized with HCl to neutrality, the resulting mixture was filtered and washed with water. The crude product was dried and purified by recrystallization from ethanol to obtain the compound as a reddish-brown solid;

[0048] Step 2: Pre...

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Abstract

The invention discloses a fluorine-containing azo surfactant prepared by mercapto-ene clicks and a method thereof, and belongs to the technical field of synthesis of functionalized surfactants. The structural formula of the above-mentioned fluorine-containing azo surfactant is as follows: the present invention obtains a high-purity, reversible responsive surfactant by means of mercaptoene click chemistry to realize reversible control of foam, and introduces a fluorine-containing alkyl group as a hydrophobic end. The nitrogen phenyl group endows the surfactant with excellent light control properties.

Description

technical field [0001] The invention relates to the technical field of functionalized surfactant synthesis, in particular to a fluorine-containing azo surfactant and a method prepared by mercapto-ene click. Background technique [0002] Foam is a common gas-liquid dispersion thermodynamic metastable system. It is an aggregate of bubbles separated from each other by a liquid film. It is widely used in petrochemical, fine chemical, fire protection, food, textile and other production practices. In general, surfactants are often used as blowing agents and foam stabilizers. They cover the air-liquid interface, increase the stability of the foam film or increase the viscosity, thereby slowing the precipitation and coarsening of the foam. However, in some cases, such as in sewage treatment, foam flooding, etc., rapid defoaming is required. At present, the industry mainly meets production needs by adding stabilizers and defoamers, but there are serious chemical pollution, which is...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C323/52C07C319/20C09K23/44B01D19/04
CPCC07C323/52C07C319/20C07C319/18C07C245/08C07C245/20B01D19/0459C09K23/00
Inventor 宗传永杨晓玉翟丛丛牛庆霞张庆霜周应东张书香
Owner UNIV OF JINAN
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