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Primary amide quaternary ammonium salt type sodium hydroxypropyl 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, cyanide reaction preparation, chemical instruments and methods, etc. It can solve the problems of high temperature reaction, need for high temperature reaction, high cost, etc., and achieve improved emulsification Performance, increasing hydrophilicity, enhancing the effect of charge strength

Inactive Publication Date: 2017-07-25
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this method is that the preparation steps are cumbersome, the cost is high, and high temperature reaction is required
[0006] The general disadvantages of the above cationic asphalt emulsifiers and their preparation methods are: the cost of raw materials for the preparation of emulsifiers is high, the sources are limited, high temperature reactions are required during preparation, and the requirements for production and experimental equipment are relatively high
[0009] In summary, in the process of developing new asphalt emulsifiers, due to the unpredictability of the emulsifying properties of the reaction raw materials and prepared asphalt emulsifiers, this greatly increases the difficulty of developing new asphalt emulsifiers

Method used

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  • Primary amide quaternary ammonium salt type sodium hydroxypropyl sulfonate asphalt emulsifier and preparation method thereof
  • Primary amide quaternary ammonium salt type sodium hydroxypropyl sulfonate asphalt emulsifier and preparation method thereof
  • Primary amide quaternary ammonium salt type sodium hydroxypropyl sulfonate asphalt emulsifier and preparation method thereof

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preparation example Construction

[0051] In one embodiment of the present invention, there is provided a preparation method of the above-mentioned primary amide quaternary ammonium salt type sodium hydroxypropyl sulfonate asphalt emulsifier, comprising the following steps:

[0052] (1) adding octadecylamine into the reaction vessel, adding an alcohol solvent, heating and stirring to dissolve, then adding acrylamide in batches, after the addition is completed, stirring and reacting at 60-80 ° C for 2-4 h to obtain reaction intermediate I;

[0053] (2) Add sodium bisulfite into another reaction vessel, add water, heat and stir to dissolve, then add epichlorohydrin in batches, and after the addition is completed, stir and react at 40-85 ° C for 3-6 h to obtain a reaction intermediate II (sodium 3-chloro-2-hydroxypropylsulfonate);

[0054] (3) The reaction intermediate II is added to the reaction intermediate I in batches, and the reaction is carried out at 60-80° C. for 3-6 h to obtain the primary amide quaternar...

Embodiment 1

[0063] (1) the preparation of primary amide quaternary ammonium salt type sodium hydroxypropyl sulfonate asphalt emulsifier:

[0064] 1) Add 269.5g octadecylamine and 260g isopropanol into the reactor, heat and stir to dissolve. Then 145.7 g of acrylamide was gradually added, and the reaction was stirred at 70° C. for 3 h.

[0065] The above-mentioned synthetic product was subjected to FTIR detection after recrystallization, separation and purification, and the results were as follows: 3371cm -1 and 3205cm -1 is the absorption peak of N-H stretching vibration, 2916cm -1 and 2850cm -1 Asymmetric and symmetric stretching vibration absorption peaks of methylene group, respectively, 1666cm -1 C=O stretching vibration absorption peak of amide group, 1471cm -1 is the asymmetric bending vibration of methylene, 1417cm -1 is the asymmetric bending vibration of the methyl group, 1263 cm -1 and 1128cm -1 C-N stretching vibration absorption peak, 717cm -1 For methylene in-plane r...

Embodiment 2

[0079] (1) the preparation of primary amide quaternary ammonium salt type sodium hydroxypropyl sulfonate asphalt emulsifier:

[0080] 1) Add 269.5g octadecylamine and 260g absolute ethanol into the reactor, heat and stir to dissolve. Then 145.7 g of acrylamide was gradually added, and the reaction was stirred at 70° C. for 3 h.

[0081] 2) In another reactor, add 122.6 g of sodium bisulfite and 392.7 g of water, stir to dissolve, and heat to 75°C. Then, 98.9 g of epichlorohydrin was added dropwise, and the reaction was stirred at 75° C. for 3.5 h to obtain an aqueous solution of sodium 3-chloro-2-hydroxypropyl sulfonate.

[0082] 3) The aqueous solution of sodium 3-chloro-2-hydroxypropyl sulfonate prepared in step 2) was added dropwise to the synthesized product in the above step 1), and the reaction was stirred at 75° C. for 3 hours. The primary amide quaternary ammonium salt type sodium hydroxypropyl sulfonate asphalt emulsifier was obtained, which was reserved for the emu...

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Abstract

The invention discloses a primary amide quaternary ammonium salt sodium hydroxypropyl sulfonate asphalt emulsifier with a molecular structure shown in the specification, and the asphalt emulsifier is prepared from the following raw materials of octadecylamine, an alcohols solvent, acrylamide, epoxy chloropropane, and sodium hydrogen sulfite according to the molar radio of 1 mol to (4.00-9.00) mol to (2.00-2.10) mol to (1.00-1.15) mol to (1.05-1.25) mol. The asphalt emulsifier provided by the invention is low in preparation cost and simple in process and does not need high-temperature reaction.

Description

technical field [0001] The invention relates to a primary amide quaternary ammonium salt type sodium hydroxypropyl sulfonate asphalt emulsifier and a preparation method thereof, belonging to the technical field of fine chemicals. Background technique [0002] Asphalt emulsifier is an amphiphilic molecule with hydrophobic and hydrophilic groups. Asphalt emulsifier plays a decisive role in the production and application of emulsified asphalt. It is not only related to the preparation and storage stability of emulsified asphalt, It also directly determines important indicators such as the demulsification speed and coagulation time of the emulsified asphalt. [0003] Asphalt emulsifiers are divided into cationic and anionic emulsifiers according to their ionic charge properties. Among them, cationic asphalt emulsifiers have developed relatively late, but in practical applications, cationic asphalt emulsifiers have been found to have better performance with various minerals. Adh...

Claims

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Application Information

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IPC IPC(8): C07C309/14C07C303/32B01F17/06C09K23/06
CPCC07C227/02C07C303/32C07C309/14C08J3/03C08J2395/00C09K23/00
Inventor 施来顺马存飞于小梦
Owner SHANDONG UNIV
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