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Preparation method of polyquaternary ammonium salt surfactant

A surfactant and polyquaternary ammonium salt technology, applied in the direction of chemical instruments and methods, preparation of organic compounds, preparation of amino hydroxyl compounds, etc., can solve the problems of reduced performance, increased critical micelle concentration, etc., to achieve energy saving, Excellent surface activity, the effect of improving compatibility

Active Publication Date: 2018-10-30
SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the molecular structure of traditional quaternary ammonium salt surfactants only contains one hydrophilic group and one lipophilic group, the hydrophilic groups of the two positively charged quaternary ammonium salts on the two-phase interface will be damaged due to static electricity. Repulsion and away from each other, which causes its critical micelle concentration (C.M.C.) to increase and performance to decline

Method used

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  • Preparation method of polyquaternary ammonium salt surfactant
  • Preparation method of polyquaternary ammonium salt surfactant
  • Preparation method of polyquaternary ammonium salt surfactant

Examples

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example 1

[0025] (1) Synthesis of polyquaternary ammonium salt surfactant intermediate: first weigh 10g of triethylenetetramine and 0.1g of potassium carbonate, dissolve them in 100ml of DMF solvent, and weigh 34.2g of epichlorohydrin , add it dropwise to the solution containing triethylenetetramine at a rate of 5 drops / min, and react for 30 minutes under nitrogen protection and uniform stirring. After the solution turns milky white, control the temperature at 40°C. Continue to drop epichlorohydrin into the reactor at a speed of 1 / min. After all the epichlorohydrin is added dropwise, continue to react for 3 hours and carry out vacuum distillation to remove solvent and excess polyamine to obtain yellow viscous Intermediates, involving the following reaction formula:

[0026] (2) Preparation of polyquaternary ammonium salt cationic surfactant: First, in two different containers, dissolve 10g of the intermediate prepared in step (1) and 23.5g of cetyl tertiary amine in 100ml of DMF solv...

example 2

[0035] (1) Synthesis of polyquaternary ammonium salt surfactant intermediate: first weigh 10g of diethylenetriamine and 0.1g of potassium carbonate, dissolve them in 100ml of DMF solvent, and weigh 40.4g of epichlorohydrin , add it dropwise to the solution containing triethylenetetramine at a rate of 5 drops / min, and react for 30 minutes under nitrogen protection and uniform stirring. After the solution turns milky white, control the temperature at 45°C, Continue to drop epichlorohydrin into the reactor at a speed of 1 / min. After all the epichlorohydrin is added dropwise, continue to react for 3 hours and carry out vacuum distillation to remove solvent and excess polyamine to obtain yellow viscous intermediate.

[0036] (2) Preparation of polyquaternary ammonium salt cationic surfactant: First, in two different containers, 10g of the intermediate prepared in step (1) and 23.8g of cetyl tertiary amine were dissolved in 100ml of DMF respectively solvent, and then slowly add the...

example 3

[0038] (1) Synthesis of polyquaternary ammonium salt surfactant intermediate: first weigh 10g of triethylenetetramine, dissolve it in 100ml of DMF solvent, weigh 40.4g of epichlorohydrin, and follow the rate of 5 drops / min Add it dropwise to the solution in which triethylenetetramine is dissolved, and react for 90 minutes under the condition of nitrogen protection and uniform stirring. Continue to add epichlorohydrin dropwise into the container. After the epichlorohydrin is completely added dropwise, continue to react for 5 hours and then carry out vacuum distillation to remove solvent and excess polyamine to obtain a yellow viscous intermediate.

[0039] (2) Preparation of polyquaternary ammonium salt cationic surfactant: First, in two different containers, dissolve 10g of the intermediate prepared in step (1) and 18.6g of dodecyl tertiary amine in 100ml of DMF solvent, then slowly add the intermediate solution dropwise to the solution of dodecyl tertiary amine, after all the...

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Abstract

The invention discloses a preparation method of a polyquaternary ammonium salt surfactant, and relates to a preparation method of a surfactant. According to the preparation method, polyamine structurally containing three or more amidogens is used to react with epichlorohydrin at first, and then an intermediate product and alkyl tertiary amine react with each other to prepare the high-activity polyquaternary ammonium salt surfactant. As multiple quaternary ammonium salt molecules are connected through one connection chain, the polyquaternary ammonium salt surfactant prepared by the preparationmethod disclosed by the invention is extremely high in surface activity. Furthermore, the molecules of the polyquaternary ammonium salt surfactant contain multiple hydroxide radicals, so that the polyquaternary ammonium salt surfactant is also high in water solubility. In addition, the raw materials are wide in source; the preparation process is simple, low in production cost and high in yield; the polyquaternary ammonium salt surfactant has a wide application value.

Description

technical field [0001] The invention relates to a method for preparing a surfactant, in particular to a method for preparing a polyquaternary ammonium salt surfactant. Background technique [0002] Surfactant is also known as "industrial monosodium glutamate". One end of its molecular structure is a lipophilic non-polar group, and the other end is a hydrophilic polar group. Therefore, this type of special molecule can be both hydrophilic and lipophilic. A compound with "amphiphile structure" can effectively improve the compatibility of oil-water two phases, and has a wide range of applications in many fields. Surfactants are usually divided into cationic surfactants, anionic surfactants and zwitterionic surfactants according to whether they generate ions and their positive and negative properties after they are dissolved in water, and as an important Cationic surfactants Quaternary ammonium salt surfactants were developed as early as the 1950s, and developed rapidly in the ...

Claims

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Application Information

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IPC IPC(8): B01F17/18B01F17/38C07C213/02C07C215/40C09K23/18C09K23/38
CPCC07C213/02C07C213/04C09K23/00
Inventor 马驰
Owner SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
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