Asymmetric Gemini surfactant containing carboxyl-sulfonic groups and microwave preparation method of asymmetric Gemini surfactant

A technology of surfactants and sulfonic acid groups, which is applied in the field of asymmetric Gemini surfactants containing carboxyl-sulfonic acid groups and its microwave preparation, which can solve the problems of rare surfactants and achieve good market applicability

Active Publication Date: 2016-11-16
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are few studies on the synthesis of surfactants by microwave hydrothermal method.

Method used

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  • Asymmetric Gemini surfactant containing carboxyl-sulfonic groups and microwave preparation method of asymmetric Gemini surfactant

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Step 1: Weigh 9.8 parts by mass of fatty acid monoethanolamide maleic acid diester, neutralize its pH to 7 with 40% sodium hydroxide solution, add 3.3 parts by mass of disodium dodecyl sulfosuccinate Salt. Weigh 2.2 parts by mass of sodium bisulfite, and make it into a 30% sodium bisulfite solution dropwise into a three-necked flask, and stir the system evenly in a water bath at 70-80°C. The reactants were transferred to a microwave digestion apparatus and reacted for 90 minutes under the conditions of a temperature of 170° C. and a power of 600 W to obtain fatty acid monoethanolamide sulfosuccinic acid diester.

[0034] Step 2: Weigh 3.7 parts by mass of chloroacetic acid to prepare a 30% solution, and adjust the pH of the solution to 7 with sodium hydroxide. Add the above 30% chloroacetic acid solution dropwise to 20.44 parts by mass of fatty acid monoethanolamide sulfosuccinic acid diester, adjust the pH of the system to 7, and stir evenly. The reactant was transfe...

Embodiment 2

[0037] Step 1: Weigh 10.8 parts by mass of fatty acid monoethanolamide maleic acid diester, neutralize its pH to 7 with 40% sodium hydroxide solution, add 4.3 parts by mass of disodium dodecyl sulfosuccinate Salt. Weigh 2.4 parts by mass of sodium bisulfite, and make a 30% sodium bisulfite solution dropwise into a three-necked flask, and stir the system evenly in a water bath at 80°C. The reactant was transferred to a microwave digestion apparatus and reacted for 60 minutes under the conditions of temperature 180°C and power 600W to obtain fatty acid monoethanolamide sulfosuccinic acid diester.

[0038] Step 2: Weigh 3.8 parts by mass of chloroacetic acid to prepare a 30% solution, and adjust the pH of the solution to 7 with sodium hydroxide. Add the above 30% chloroacetic acid solution dropwise to 19.6 parts by mass of fatty acid monoethanolamide sulfosuccinic acid diester, adjust the pH of the system to 7, and stir evenly. The reactant was transferred to a high-throughput ...

Embodiment 3

[0041] Step 1: Weigh 9.3 parts by mass of fatty acid monoethanolamide maleic acid diester, neutralize its pH to 7 with 40% sodium hydroxide solution, add 3.3 parts by mass of disodium dodecyl sulfosuccinate Salt. Weigh 2.25 parts by mass of sodium bisulfite, and make it into a 30% sodium bisulfite solution dropwise into a three-necked flask, and stir the system evenly in a water bath at 75°C. The reactant was transferred to a microwave digestion apparatus and reacted for 90 minutes under the conditions of a temperature of 160° C. and a power of 600 W to obtain fatty acid monoethanolamide sulfosuccinic acid diester.

[0042] Step 2: Weigh 3.4 parts by mass of chloroacetic acid to prepare a 30% solution, and adjust the pH of the solution to 7 with sodium hydroxide. Add the above 30% chloroacetic acid solution dropwise to 18.36 parts by mass of fatty acid monoethanolamide sulfosuccinic acid diester, adjust the pH of the system to 7, and stir evenly. Transfer the reactant to a h...

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Abstract

The invention relates to an asymmetric Gemini surfactant containing carboxyl-sulfonic groups and a microwave preparation method of the asymmetric Gemini surfactant. The research of synthesizing a surfactant by a microwave hydrothermal method is seldom reported. The microwave preparation method disclosed by the invention comprises the following steps of preparing fatty acid monoethanolamide sulfosuccinate diester from fatty acid monoethanolamide maleic acid diester, dodecylsulfosuccinate disodium salt and sodium bisulfate, dropwise adding a chloroacetic acid solution, performing shifting to a high-flux microwave digestion/extraction/synthesis work station for a reaction, and performing neutralization so as to obtain the asymmetric Gemini surfactant containing carboxyl-sulfonic groups. According to the asymmetric Gemini surfactant and the microwave preparation method thereof disclosed by the invention, natural fatty acid which is low in price and easy to obtain is used as a raw material, the asymmetric Gemini surfactant containing the carboxyl-sulfonic groups, which is prepared by a microwave method, overcomes the disadvantages that through conventional oil bath heating, the reaction time is long, the reaction condition is rigorous, raw materials in the reaction are easy to sublimate, the raw materials and products are easy to be subjected to an oxidation reaction, and the color of products is poor, and the asymmetric Gemini surfactant has good market applicability.

Description

technical field [0001] The invention relates to a surfactant, in particular to a carboxyl-sulfonic acid group-containing asymmetric Gemini surfactant and a microwave preparation method thereof. Background technique [0002] With the continuous development of science and technology, industrial production and multidisciplinary cross-fields, the scope of application of surfactants will become wider and wider, and will be related to many aspects of production and life. Agents are also given higher performance requirements. At this time, Gemini surfactant came into being, and Gemini surfactant has become the research focus of relevant workers because of its unique structure, good biodegradability, and excellent surface activity. Sulfonate Gemini surfactant is a very important anionic Gemini surfactant, which has high surface activity, good water solubility, wettability, dispersibility, and acid and alkali resistance have also been greatly improved. So sulfonate Gemini surfactan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C303/32C07C309/17B01F17/22C09K23/22
CPCC07C303/22C07C303/32C07C309/17C09K23/00
Inventor 吕斌王泓棣马建中苏娇娇翟蕊
Owner SHAANXI UNIV OF SCI & TECH
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