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A kind of 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: 2018-07-10
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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  • A kind of primary amide quaternary ammonium salt type sodium hydroxypropyl sulfonate asphalt emulsifier and preparation method thereof
  • A kind of primary amide quaternary ammonium salt type sodium hydroxypropyl sulfonate asphalt emulsifier and preparation method thereof
  • A kind of 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, the preparation method of above-mentioned primary amide quaternary ammonium salt type sodium hydroxypropyl sulfonate asphalt emulsifier is provided, comprising the steps:

[0052] (1) Add octadecylamine into the reaction vessel, add alcohol solvent, heat and stir to dissolve, then add acrylamide in batches, after the addition, stir and react at 60-80°C for 2-4h to obtain reaction intermediate I;

[0053] (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);

[0054] (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 the primary amide quaternary ammonium salt type sodium hydroxypropyl sulfonate asphalt emulsifier.

[0055] The applicant found un...

Embodiment 1

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

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

[0065] The above synthetic product was separated and purified by recrystallization and then detected by FTIR. The results are as follows: 3371cm -1 and 3205cm -1 The N-H stretching vibration absorption peak at 2916cm -1 and 2850cm -1 The asymmetric and symmetric stretching vibration absorption peaks of methylene respectively, 1666cm -1 It is the amide group C=O stretching vibration absorption peak, 1471cm -1 is the asymmetric bending vibration of methylene, 1417cm -1 is the asymmetric bending vibration of the methyl group, 1263cm -1 and 1128cm -1 C-N stretching vibration absorption peak, 717cm -1 It is the in-plane rocking vibration of methylene, 669cm -1 is ...

Embodiment 2

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

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

[0081] 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.

[0082] 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 primary amide quaternary ammonium salt type sodium hydroxypropyl sulfonate asphalt emulsifier was obtained, which was reserved for the emulsified asphalt test.

[0083] (2) Preparation of emulsified ...

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Abstract

The invention discloses a primary amide quaternary ammonium salt type sodium hydroxypropyl sulfonate asphalt emulsifier. Its molecular structure is: it is prepared from the following molar ratio raw materials: octadecylamine, alcohol solvent, acrylamide, The molar ratio of epichlorohydrin and sodium bisulfite is 1 mol: (4.00-9.00) mol: (2.00-2.10) mol: (1.00-1.15) mol: (1.05-1.25) mol. The production cost of the asphalt emulsifier of the invention is low, the process is simple, and no high-temperature reaction is required.

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 breaking speed and setting time of emulsified asphalt. [0003] Asphalt emulsifiers are divided into cationic and anionic emulsifiers according to the different ionic charge properties. Among them, the development of cationic asphalt emulsifiers is relatively late, but in practical applications, it is found that cationic asphalt emulsifiers have better interactions with various mineral materia...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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