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Sulfamic acid amphoteric surfactant and synthesis method thereof

A surfactant and sulfamic acid technology, applied in the preparation of sulfonate, chemical instruments and methods, organic chemistry, etc., can solve the problems of no immediate treatment, influence on product yield, intensified reverse reaction, etc., and achieve low product cost , The solvent is cheap and easy to get, and the effect of reducing the processing cost

Inactive Publication Date: 2010-12-15
任朝华 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above two patents are all synthetic carboxylic acid type amphoteric surfactants. Non-long-chain aliphatic amines are used in the selection of raw materials, which relatively reduces the cost of raw materials, but the hydrogen halide gas generated during the reaction process is not immediately treated. , but use escape or neutralization treatment after the end of the reaction. In this way, if the hydrogen halide gas does not escape in time, the reverse reaction will be intensified and the product yield will be affected. At the same time, the escape of hydrogen halide gas will pollute the environment.

Method used

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  • Sulfamic acid amphoteric surfactant and synthesis method thereof
  • Sulfamic acid amphoteric surfactant and synthesis method thereof
  • Sulfamic acid amphoteric surfactant and synthesis method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0051] The preparation of the sulfamic acid type amphoteric surfactant such as structure shown in formula (1):

[0052]

[0053] Add 25mL of ethylenediamine into a 250mL three-neck flask, maintain the system temperature at 90°C with a water filter, slowly add 12mL of 1-bromododecane dropwise under stirring, and react for 1 hour after the drop is completed, adjust with 40% NaOH solution The pH value of the reaction liquid system is in the range of 9-11. After continuing to stir and react for 5 hours, the excess ethylenediamine is evaporated and cooled to obtain N-dodecylethylenediamine solid (intermediate A).

[0054] Take 4.6g of the intermediate A obtained above and put it into a three-necked flask, then add 28mL of water, stir and raise the temperature to 95°C, after the reaction solution is evenly stirred, slowly add 2-hydroxy-3-chloropropane with a mass percentage of 20% Sodium sulfonate solution, after adding dropwise and stirring at constant temperature for 1 hour, ad...

Embodiment 2

[0056] The preparation of the sulfamic acid type amphoteric surfactant such as structure shown in formula (2):

[0057]

[0058] Add 100mL of ethylenediamine into a 250mL three-necked flask, filter with water to maintain the system at 95°C, slowly add 60mL of 1-bromohexadecane dropwise under stirring, and after stirring for 1 hour, use 35% NaOH solution to adjust the pH of the system at In the range of 9-11, continue to stir for 4 hours, distill off excess ethylenediamine, and wash with water to obtain a white paste solid—N-hexadecylethylenediamine (intermediate B).

[0059] Take 28.54g of intermediate B and dissolve it in 70mL of ethanol, heat to 85°C, slowly add 19.95g of 2-hydroxy-3-chloropropanesulfonate sodium 20% solution (prepared with 70% alcohol aqueous solution) dropwise under stirring , after dropping, the temperature was raised to 90° C., and the temperature was kept constant for 1 hour, 12 mL of 35% NaOH solution was added, and the reaction was continued for 5 ...

Embodiment 3

[0061] Measure the surface tension of conventional tensio-active agent, embodiment 1, the tensio-active agent of example 2 and other several surfactants synthesized with this method with JK99B type full-automatic tensiometer, obtain their critical micelle concentration (CMC) and The surface tension at the CMC (γ CMC ) data are shown in Table 1.

[0062] Several sulfamic acid type amphoteric surfactants of table 1 synthesis and the CMC and

[0063] Surfactant

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Abstract

The invention relates to a sulfamic acid amphoteric surfactant and a synthesis method thereof, belonging to the technical field of organic compound synthesis. The synthesis method comprises the steps of: firstly synthesizing alkyl diamine or polyamine by using halohydrocarbon and diamine or polyamine in alkali condition, and secondly, reacting alkyl diamine or polyamine with halogenated sulphonating agent in alkali condition to synthesize a final product of sulfamic acid amphoteric surfactant. By controlling the reaction system at a certain alkaline pH value, the affects of hydrogen halide generated in the reaction process to equipment and the environment are overcome, meanwhile, the synthesis reaction speed and yield are improved, the final product has excellent surface activity property and hard water resistance, and can be applicable to the fields of development of oil and gas fields, corrosion inhibition of metal, surface cleaning, modification of fuel oil and the like.

Description

technical field [0001] The invention belongs to the technical field of organic compound synthesis, in particular to a sulfamic acid type amphoteric surfactant and a synthesis method thereof. Background technique [0002] At present, amino acid amphoteric surfactants are divided according to the positive charge center nitrogen atom, and can be divided into amino acid amphoteric surfactants containing weakly basic nitrogen atoms and amino acid amphoteric surfactants containing strongly basic nitrogen atoms (i.e. betaine ). These two types of amino acid amphoteric surfactants have been widely used in various industries, and most of them are mainly carboxylic acid or phosphoric acid type products. Amphoteric surfactants of sulfamic acid type are less developed and applied, but their superiority in performance is more and more evident. The synthetic method of sulfamic acid type amphoteric surfactant (mainly referring to containing weakly basic nitrogen atom) mainly contains the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01F17/04C07C309/14C07C303/32C09K23/04
CPCY02P20/582
Inventor 任朝华罗跃陈大钧黄璟
Owner 任朝华
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