Tertiary amide quaternary ammonium salt type hydroxypropyl sodium sulfonate asphalt emulsifier and preparation method thereof
A technology of sodium hydroxypropyl sulfonate and asphalt emulsifier, which is applied in the direction of sulfonate preparation, carboxylic acid amide preparation, chemical instruments and methods, etc., can solve the problems of high irritation, source limitation, high temperature reaction, etc., and achieve improvement Stability, enhancement of charge intensity, and system stabilization effects
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[0040] For above asphalt emulsifier, the present invention also provides its preparation method, comprises the following steps:
[0041] (1) Mix octadecylamine, alcohol solvent and N,N-dimethylacrylamide to obtain reaction intermediate I, and intermediate I is
[0042] C 18 h 37 N(CH 2 CH 2 CON(CH 3 ) 2 ) 2 ;
[0043] (2) Add 3-chloro-2-hydroxypropyl sodium sulfonate into the reaction intermediate I and react to obtain tertiary amide quaternary ammonium salt type sodium hydroxypropyl sulfonate asphalt emulsifier.
[0044] In the preferred technical scheme of the present invention, the preparation method of described 3-chloro-2-hydroxypropyl sodium sulfonate comprises the following steps:
[0045] Dissolve sodium bisulfite in water, heat to a certain temperature, then gradually add epichlorohydrin, mix and react to obtain reaction intermediate II, intermediate II is 3-chloro-2-hydroxypropyl sodium sulfonate
[0046]
[0047] Preferably, the reaction temperature is 4...
Embodiment 1
[0065] (1) Preparation of tertiary amide quaternary ammonium salt type sodium hydroxypropyl sulfonate asphalt emulsifier:
[0066] 1) Add 269.5g octadecylamine, 260g isopropanol in the reactor, heat and stir to dissolve. Then, 203.2 g of N,N-dimethylacrylamide was gradually added, and the reaction was stirred at 70°C for 3 h.
[0067] The above synthetic intermediate product was separated and purified by recrystallization and then detected by FTIR. The results are as follows: 2910cm -1 It is the asymmetric stretching vibration absorption peak of methylene, 2840cm -1 Closed peak for the symmetrical stretching vibration of methylene, 1650cm -1 and 1625cm -1 It is the C=O stretching vibration absorption peak in the amide group, 1460cm -1 is the asymmetric bending vibration of methylene, 1390cm -1 is the asymmetric bending vibration of the methyl group, 1263cm -1 and 1153cm -1 C-N stretching vibration absorption peak, 777cm -1 and 719cm -1 It is the in-plane rocking vibra...
Embodiment 2
[0081] (1) Preparation of tertiary amide quaternary ammonium salt type sodium hydroxypropyl sulfonate asphalt emulsifier:
[0082] 1) Add 269.5g octadecylamine and 260g absolute ethanol in the reactor, heat and stir to dissolve. Then, 203.2 g of N,N-dimethylacrylamide was gradually added, and the reaction was stirred at 70°C for 3 h.
[0083] 2) Add 122.6g of sodium bisulfite and 392.7g of water into another reactor, stir to dissolve, and heat to 75°C. Then 98.9g of epichlorohydrin was added dropwise, and stirred at 75°C for 3.5h to obtain 3-chloro-2-hydroxypropyl sodium sulfonate aqueous solution.
[0084] 3) The aqueous solution of sodium 3-chloro-2-hydroxypropyl sulfonate prepared in step 2) was added dropwise to the synthesis product in the above step 1), and stirred at 75° C. for 3 h. The obtained tertiary amide quaternary ammonium salt type sodium hydroxypropyl sulfonate asphalt emulsifier was reserved for the emulsified asphalt test.
[0085] (2) Preparation of emuls...
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