Tertiary amine sulfonic acid type surfactant, and preparation method and application thereof
A technology of surfactant and tertiary sulfamic acid, which is applied in the preparation of sulfonic acid, chemical instruments and methods, transportation and packaging, etc., can solve the problems of poor antifoaming performance and emulsifying performance, complicated preparation process and method, and achieve The process is dangerous and corrosive, the production cost is low, and the effect of good performance
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[0046] In one embodiment of the present invention, a kind of preparation method of above-mentioned tertiary sulfamic acid type surfactant is provided, comprises the steps:
[0047] 1) prepare reaction intermediate I, the structural general formula of described reaction intermediate I is:
[0048]
[0049] Among them, n=12,14,16,18;
[0050] 2) Add acrylic acid dropwise to the reaction intermediate I, mix and react to obtain a tertiary sulfamic acid surfactant.
[0051]In a specific embodiment, in step 1), the preparation of reaction intermediate I includes the following steps: mixing and reacting fatty amine, alcohol solvent and 2-acrylamide-2-methylpropanesulfonic acid (abbreviated as AMPS) ;
[0052] In a specific embodiment, the molar ratio of the fatty amine, alcohol solvent, 2-acrylamide-2-methylpropanesulfonic acid, and acrylic acid is 1:7.00-13.00:1.00-1.05:1.00-1.10.
[0053] Through a large number of experimental verification and analysis, each raw material of a...
Embodiment 1
[0067] The present embodiment provides a kind of preparation method of tertiary sulfamic acid type surfactant, comprises the steps:
[0068] (1) Preparation of tertiary sulfamic acid type surfactant (n=18):
[0069] 1) Add 269.51g octadecylamine, 550g isopropanol in the reactor, heat and stir to dissolve. Then 215.6g AMPS was gradually added, and the reaction was stirred at 75°C for 4h to obtain reaction intermediate I.
[0070] The above synthetic intermediates were evaporated to remove the solvent, and then separated and purified by recrystallization using methanol as a solvent for 3 times, and then analyzed and detected by FTIR, NMR and mass spectrometry.
[0071] FTIR analysis (see figure 1 ): 3454cm -1 (peak 1) is the stretching vibration peak of O-H in the sulfonic acid group, 3327cm -1 (peak 2) is the N-H stretching vibration peak of secondary amide, 2916cm -1 (peak 3) is the asymmetric stretching vibration absorption peak of methylene, 2852cm -1 (peak 4) is the p...
Embodiment 2
[0082] The present embodiment provides a kind of preparation method of tertiary sulfamic acid type surfactant, comprises the steps:
[0083] (1) Preparation of tertiary sulfamic acid type surfactant (n=16):
[0084] 1) Add 241.46g hexadecylamine, 550g isopropanol in the reactor, heat and stir to dissolve. Then 215.6g AMPS was gradually added, and the reaction was stirred at 75°C for 4h to obtain reaction intermediate I.
[0085] The above-mentioned synthetic intermediates were evaporated to remove the solvent, and then separated and purified by recrystallization using ethyl acetate as a solvent for three times, and then analyzed and detected by FTIR, NMR and mass spectrometry.
[0086] FTIR analysis (see Figure 5 ): 3450cm -1 (peak 1) is the stretching vibration peak of O-H in the sulfonic acid group, 3321cm -1 (peak 2) is the N-H stretching vibration peak of secondary amide, 2922cm -1 (peak 3) is the asymmetric stretching vibration absorption peak of methylene, 2848cm ...
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