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A kind of tertiary amide quaternary 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 direction of sulfonate preparation, carboxylic acid amide preparation, chemical instruments and methods, etc., can solve the problems of high irritation, high temperature reaction, source limitation, etc., and achieve system Effects of stabilizing, improving stability, and enhancing charge strength

Inactive Publication Date: 2018-11-02
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, it has been found through research that the performance of the dianionic and dianionic asphalt emulsifier needs to be further improved; in addition, acrylic acid is used as a raw material, which is more irritating, which is not conducive to the health of production workers.
[0007] The general disadvantages of the above-mentioned amphoteric asphalt emulsifiers and their preparation methods are: the cost of raw materials for the preparation of emulsifiers is high, the source is limited, high temperature reactions are required during preparation, and the requirements for production and experimental equipment are relatively high

Method used

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  • A kind of tertiary amide quaternary ammonium salt type sodium hydroxypropyl sulfonate asphalt emulsifier and its preparation method
  • A kind of tertiary amide quaternary ammonium salt type sodium hydroxypropyl sulfonate asphalt emulsifier and its preparation method
  • A kind of tertiary amide quaternary ammonium salt type sodium hydroxypropyl sulfonate asphalt emulsifier and its preparation method

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preparation example Construction

[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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Abstract

The invention discloses a tertiary amide quaternary ammonium salt type sodium hydroxypropyl sulfonate asphalt emulsifier and a preparation method thereof. The asphalt emulsifier is prepared from the following raw materials in molar proportions: octadecylamine, alcohol solvent, The molar ratio of N,N-dimethylacrylamide, epichlorohydrin and sodium bisulfite is 1mol: (4.00-9.00)mol: (2.00-2.10)mol: (1.00-1.15)mol: (1.05-1.25) ) mol. The alcoholic solvent is ethanol, methanol or isopropanol. The synthetic raw materials of the asphalt emulsifier of the invention are easy to obtain, the production cost is low, the process is simple, and no high-temperature reaction is required. It can emulsify various types of asphalt, the prepared emulsified asphalt is fine and uniform, has good storage stability, and can prepare cationic emulsified asphalt.

Description

technical field [0001] The invention relates to a tertiary 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] An emulsifier is an amphiphilic molecule composed of a non-polar hydrophobic group and a polar hydrophilic group. This structure makes the emulsifier form a directional and dense arrangement on the surface (interface) of the solution, changing the surface (interface) of the system. Surface chemistry. When the concentration of the emulsifier exceeds its critical micelle concentration CMC, the surface (interface) surface tension is reduced to the minimum, so that it has the functions of emulsification, defoaming, and dispersion. application. [0003] According to the different properties of the hydrophilic group of the emulsifier, the emulsifier is divided into anionic type, cationic type, zwitterionic type, nonionic e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C309/14C07C303/32B01F17/04C08J3/03C08L95/00C09K23/04
CPCC07C231/12C07C303/32C07C309/14C08J3/03C08J2395/00C09K23/00
Inventor 施来顺于小梦马存飞张由申
Owner SHANDONG UNIV
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