A kind of vegetable oil-based zwitterionic surfactant and preparation method thereof

A technology of surfactant and zwitterion, which is applied in the field of vegetable oil-based amphoteric surfactant and its preparation, can solve the problems of high price and high price, achieve good compatibility and compatibility, easy compounding, and get rid of excessive dependence Effect

Active Publication Date: 2018-09-18
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are not many types of amphoteric surfactants, and their high price limits their wide application, but their unique advantages during use are enough to make up for their high price in some occasions

Method used

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  • A kind of vegetable oil-based zwitterionic surfactant and preparation method thereof
  • A kind of vegetable oil-based zwitterionic surfactant and preparation method thereof
  • A kind of vegetable oil-based zwitterionic surfactant and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0028] (1) Add 100mL of 5 mol / L hydrochloric acid aqueous solution into a three-necked flask, stir and raise the temperature to 40°C, slowly add 0.5 mol of N,N-dimethylbutylamine to the aqueous hydrochloric acid solution dropwise, keep the reaction for 1h, then drop Add 1.5 mol ethanol solution containing 60% epoxidized soybean oil, control the temperature at 50°C, and react for 6 hours. After the reaction is completed, distill under reduced pressure to obtain a yellow transparent paste, which is further recrystallized and purified to obtain soybean oleyl butylamine salt.

[0029] (2) Take 10g of the soybean oleyl octylamine salt prepared in step (1) and fully dissolve it in 200mL of ethanol aqueous solution with a volume fraction of 95%, add 0.5g NaOH and stir for 4 hours under reflux, stop the reaction, filter, and wash the filter residue with absolute ethanol for 3 Second, vacuum drying to obtain soybean oil-based zwitterionic surfactant.

Embodiment 2

[0031] (1) Add 100mL of 5 mol / L hydrochloric acid aqueous solution into a three-necked flask, stir and heat up to 50°C, slowly add 0.5 mol of N,N-dimethyloctylamine to the aqueous hydrochloric acid solution dropwise, keep the reaction for 2 hours, then drop Add 1.5 mol ethanol solution containing 60% epoxy soybean oil, control the temperature at 60°C, and react for 8 hours. After the reaction is completed, distill under reduced pressure to obtain a yellow transparent paste, and further recrystallize and purify to obtain soybean oleyl octylamine salt.

[0032] (2) Take 10 g of the soybean oleyl octylamine salt prepared in step (1) and fully dissolve it in 200 mL of ethanol aqueous solution with a volume fraction of 95%, add 1 g of KOH to reflux and stir for 6 hours, stop the reaction, filter, and wash the filter residue 3 times with absolute ethanol , vacuum-dried to obtain soybean oil-based zwitterionic surfactant.

Embodiment 3

[0034] (1) Add 100mL of 5 mol / L hydrochloric acid aqueous solution into a three-necked flask, stir and heat up to 45°C, slowly add 0.5 mol of N,N-dimethyldodecylamine into the hydrochloric acid aqueous solution dropwise, and keep the reaction for 1.5h. Then 1.5 mol ethanol solution containing 60% epoxy soybean oil was added dropwise, the temperature was controlled at 55°C, and the reaction was carried out for 7 hours. After the reaction was completed, it was distilled under reduced pressure to obtain a yellow transparent paste, which was further recrystallized and purified to obtain soybean oil base dodecane amine salt.

[0035] (2) Take 10 g of the soybean oil base dodecylamine salt prepared in step (1) and fully dissolve it in 200 mL of ethanol aqueous solution with a volume fraction of 95%, add 0.8 g of KOH and stir under reflux for 6 hours, stop the reaction, filter, and wash the filter residue with absolute ethanol 3 times, vacuum drying to obtain soybean oil-based zwitte...

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PUM

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Abstract

The invention discloses a vegetable oil-based zwitterionic surfactant and a preparation method thereof. The surfactant is mainly prepared by the following steps: (1) reacting epoxy vegetable oil with a tertiary amine to form a salt to obtain a vegetable oil-based amine salt compound; (2) The vegetable oil-based amine salt compound is purified after being hydrolyzed in an alkaline solution. The vegetable oil-based zwitterionic surfactant prepared by the present invention is a novel surfactant with both ammonium cation and carboxylate anion, has a lower critical micelle concentration, and can form a smaller curvature at a lower concentration It has a unique micelle structure, has good wettability and antistatic properties, and can show good compatibility and synergistic effect when compounded with other surfactants.

Description

technical field [0001] The invention belongs to the technical field of surfactant preparation, and in particular relates to a vegetable oil-based amphoteric surfactant and a preparation method thereof. Background technique [0002] Due to the amphiphilic structure of surfactant molecules, it is easy to self-assemble at the two interfaces after being dissolved in water and greatly reduce the surface tension of the aqueous solution. Important raw materials and additives that are indispensable to improve quality and reduce production costs. In recent years, with the progress and development of various production activities, science and technology, higher and higher requirements have been put forward for the variety and performance of surfactants, which has promoted the continuous development of surfactant science, and the related scientific and theoretical research on surfactants has also It has been further improved and enriched, and surfactants have gradually penetrated into...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C227/18C07C229/22B01F17/18B01F17/28C09K23/18C09K23/28
CPCC07C227/08C07C227/18C09K23/00
Inventor 侯琳熙吴玄弦李硕林姜怡青牛宇迪
Owner FUZHOU UNIV
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