Cationic surfactant and preparation method thereof

A surfactant and cationic technology, applied in the field of 3--2-hydroxypropyltrimethylammonium halide and its manufacture, can solve the problems of low output and low proportion, and achieve simple and convenient method, good water solubility and Effect of foaming and mild reaction conditions

Inactive Publication Date: 2012-11-28
INNER MONGOLIA UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] There are many kinds of cationic surfactants, which are widely used in many fields such as industry, agriculture, medicine, daily chemical industry, etc. Although the proportion of cationic surfactants in the whole surfactant is not high, and the output is small, but its It has the characteristics that other types of active agents do not have and cannot be replaced

Method used

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  • Cationic surfactant and preparation method thereof
  • Cationic surfactant and preparation method thereof
  • Cationic surfactant and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Embodiment 1: 24.3g (0.1mol) lauric acid monoethanolamide, mass percent concentration are 60% sodium hydroxide solution 20g (0.3mol) and 700mL benzene drop into to be equipped with agitator, reflux condenser and constant pressure drop Add 2.6g (0.008mol) tetrabutylammonium bromide to the three-necked flask with liquid funnel and heat to dissolve. After stirring for a period of time, add 63mL (0.8mol) epichlorohydrin dropwise for 1 hour. After 10 hours of reaction, , transferred to a separatory funnel, washed each time with 300mL of warm water at 60-70°C until neutral, the water phase was extracted three times with 100mL of benzene, the organic phase was combined, and the solvent and unreacted epichlorohydrin were removed to obtain a light yellow wax Solid, the obtained solid and 10.5g (0.11mol) of trimethylamine hydrochloride were dissolved in 75mL of 95% (V / V) ethanol, after reacting at 30°C for 2 hours, the solvent was removed, and acetone recrystallized three times to...

Embodiment 2

[0024] Embodiment 2: 24.3g (0.1mol) lauric acid monoethanolamide, concentration are 60% sodium hydroxide solution 20g (0.3mol) and 700mL benzene drop into agitator, reflux condenser and constant pressure dropping funnel In a three-necked flask, add 2.6g (0.008mol) tetrabutylammonium bromide and heat to dissolve. After stirring for a period of time, 63mL (0.8mol) epichlorohydrin is added dropwise for 1 hour. After 10 hours of reaction, transfer to a separatory funnel, wash with 300mL hot water at 60-70°C each time until neutral, extract the aqueous phase with 100mL benzene three times, combine the organic phases, remove the solvent and unreacted epichlorohydrin to obtain a light yellow waxy solid , the gained solid and 15.1g (0.11mol) triethylamine hydrochloride were dissolved in 75mL95% ethanol, after reacting for 3 hours at 40°C, the solvent was removed, acetone recrystallized three times to obtain 33.6g cationic surfactant 3-( 2-dodecylaminoethoxy)-2-hydroxypropyltriethylamm...

Embodiment 3

[0025] Embodiment 3: 30.0g (0.1mol) palmitic acid monoethanolamide, concentration are 60% potassium hydroxide solution 28g (0.3mol) and 700mL benzene are dropped into and are equipped with agitator, reflux condenser and constant pressure dripping In the three-necked flask with a funnel, add 1.8g (0.008mol) tetrabutylammonium bromide and heat to dissolve. After stirring for a period of time, 78.4mL (1mol) epichlorohydrin is added dropwise for 1 hour. After 12 hours of reaction, Transfer to a separatory funnel, wash with 300mL of warm water at 60-70°C each time until neutral, extract the aqueous phase with 100mL of benzene three times, combine the organic phases, remove the solvent and unreacted epichlorohydrin to obtain a light yellow waxy solid , the obtained solid and 10.5g (0.11mol) trimethylamine hydrochloride were dissolved in 75mL95% ethanol, after reacting at 30°C for 2 hours, the solvent was removed, and acetone recrystallized three times to obtain 35.2g cationic surfact...

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Abstract

The invention discloses a cationic surfactant and a preparation method thereof. The structural general formula of the cationic surfactant is shown as a formula (I), wherein R is C11, C13, C15 or C17 alkyl, and R1 is methyl or ethyl. The reaction conditions are mild, and the method is simple and convenient; and because amido bond and hydroxypropyl are introduced into the structure, the prepared cationic surfactant has good water solubility and foaming property.

Description

technical field [0001] The present invention relates to a cationic surfactant and a production method thereof, in particular to 3-(2-fatty amidoethoxy)-2-hydroxypropyltrimethylammonium halide and a production method thereof. Background technique [0002] There are many kinds of cationic surfactants, which are widely used in many fields such as industry, agriculture, medicine, and daily chemical industry. It has the characteristics that other types of active agents do not have and cannot be replaced. Cationic surfactants generally have bactericidal and bacteriostatic effects, and are often used as disinfectants and bactericides. Another outstanding feature is that they are easily adsorbed on general solid surfaces, modifying the solid surface, and producing antistatic, soft and hydrophobic effects. Since the 1950s, people have been working on various new long-chain alkyl quaternary ammonium salt surfactants, introducing characteristic groups into the quaternary ammonium salt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01F17/42B01F17/38B01F17/22B01F17/18C07C233/18C07C231/12C09K23/42C09K23/18C09K23/22C09K23/38
Inventor 陈树峰李保国赵光远
Owner INNER MONGOLIA UNIVERSITY
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