A kind of carboxylic acid diquaternary ammonium salt type sodium hydroxypropyl sulfonate asphalt emulsifier and its preparation method
A technology of sodium hydroxypropyl sulfonate and asphalt emulsifier, which is applied in the preparation of sulfonate, the preparation of cyanide reaction, chemical instruments and methods, etc. The effect of enhancing charge strength, improving emulsifying performance, and increasing hydrophilicity
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[0050] In one embodiment of the present invention, the preparation method of above-mentioned carboxylic acid diquaternary ammonium salt type sodium hydroxypropyl sulfonate asphalt emulsifier is provided, comprising the steps of:
[0051] (1) Add N-hydrogenated tallow-1,3-propylenediamine into the reaction vessel, add alcohol solvent, heat and stir to dissolve, then add acrylic acid in batches, after the addition, stir the reaction at 60-80°C 2-4h, obtain reaction intermediate I;
[0052] (2) Add sodium bisulfite to another reaction vessel, add water, heat and stir to dissolve, then add epichlorohydrin in batches, after the addition, stir and react at 40-85°C for 3-6h to obtain a reaction intermediate II (sodium 3-chloro-2-hydroxypropyl sulfonate);
[0053] (3) Add the reaction intermediate II to the reaction intermediate I in batches, and react at 60-80° C. for 3-6 hours to obtain a bisquaternary ammonium carboxylic acid sodium hydroxypropyl sulfonate asphalt emulsifier.
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Embodiment 1
[0062] (1) Preparation of carboxylic acid diquaternary ammonium salt type sodium hydroxypropyl sulfonate asphalt emulsifier:
[0063] 1) Add 326.0g of N-hydrogenated tallow-1,3-propylenediamine and 330g of isopropanol into the reactor, heat and stir to dissolve. Then gradually add 219.8g of acrylic acid, and stir at 70°C for 3h.
[0064] 2) Add 245.2g of sodium bisulfite and 785.4g of water into another reactor, stir to dissolve, and heat to 75°C. Then 197.8 g of epichlorohydrin was added dropwise, and stirred at 75° C. for 3.5 h to obtain an aqueous solution of 3-chloro-2-hydroxypropyl sulfonate sodium.
[0065] The above synthetic intermediate product was separated and purified by recrystallization and then detected by FTIR. The results are as follows: 3592cm -1 and 3522cm -1 It is free O-H stretching vibration absorption peak, 3362cm -1 It is the absorption peak of association O-H stretching vibration, 2923cm -1 It is the asymmetric stretching vibration absorption peak...
Embodiment 2
[0077] (1) Preparation of carboxylic acid diquaternary ammonium salt type sodium hydroxypropyl sulfonate asphalt emulsifier:
[0078] 1) Add 326.0g of N-hydrogenated tallow-1,3-propylenediamine and 330g of absolute ethanol into the reactor, heat and stir to dissolve. Then gradually add 219.8g of acrylic acid, and stir at 70°C for 3h.
[0079] 2) Add 245.2g of sodium bisulfite and 785.4g of water into another reactor, stir to dissolve, and heat to 75°C. Then 197.8 g of epichlorohydrin was added dropwise, and stirred at 75° C. for 3.5 h to obtain an aqueous solution of 3-chloro-2-hydroxypropyl sulfonate sodium.
[0080] 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. Obtain carboxylic acid diquaternary ammonium salt type sodium hydroxypropyl sulfonate asphalt emulsifier, and keep it as emulsified asphalt test.
[0081] (2) Preparation of emul...
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