A kind of dicationic dianionic tertiary amide type asphalt emulsifier and its preparation method

An asphalt emulsifier and dianion technology, applied in the field of dicationic dianion tertiary amide type asphalt emulsifier and its preparation, can solve the problems of unfavorable health of production workers, high irritation and the like, and achieve low production cost, toxicity and irritation. The effect of low property and excellent emulsifying performance

Inactive Publication Date: 2019-05-07
SHANDONG UNIV
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  • 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.

Method used

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  • A kind of dicationic dianionic tertiary amide type asphalt emulsifier and its preparation method
  • A kind of dicationic dianionic tertiary amide type asphalt emulsifier and its preparation method
  • A kind of dicationic dianionic tertiary amide type asphalt emulsifier and its preparation method

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[0056] In one embodiment, the present invention provides a method for preparing a dianionic dianionic tertiary amide type asphalt emulsifier, comprising the following steps: (1) mixing N-hydrogenated tallow-1,3-propylenediamine, alcohol The mixed reaction of quasi-solvent and N,N-dimethylacrylamide obtains reaction intermediate I, and intermediate I is

[0057]

[0058] (2) Add the aqueous solution of sodium chloroacetate dropwise to the reaction intermediate I, and react to obtain the dianion dianion tertiary amide type asphalt emulsifier.

[0059] Preferably, the molar ratio of N-hydrogenated tallow-1,3-propylenediamine, alcohol solvent, N,N-dimethylacrylamide, and sodium chloroacetate is 1mol:(5.00-11.00)mol:(3.00 -3.10) mol: (2.02-2.10) mol.

[0060] After a large number of experimental verification and analysis, the above-mentioned molar ratio of each raw material makes the performance of the dianion dianion tertiary amide type asphalt emulsifier prepared by the prese...

Embodiment 1

[0072] (1) Preparation of dianionic dianionic tertiary amide type asphalt emulsifier:

[0073] 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 302.4g of N,N-dimethylacrylamide, and stir at 70°C for 3h.

[0074] The above synthetic intermediate product was separated and purified by recrystallization and then detected by FTIR. The results are as follows: 2927cm -1 It is the asymmetric stretching vibration absorption peak of methylene, 2846cm -1 Closed peak for the symmetrical stretching vibration of methylene, 1652cm -1 It is the C=O stretching vibration absorption peak in the amide group, 1500cm -1 and 1471cm -1 is the asymmetric bending vibration of methylene, 1404cm -1 is the asymmetric bending vibration of the methyl group, 1271cm -1 and 1139cm -1 C-N stretching vibration absorption peak, 1053cm -1 It is the C-H in-plane bending vibration absorption peak, 723cm -1 It ...

Embodiment 2

[0085] (1) Preparation of dianionic dianionic tertiary amide type asphalt emulsifier:

[0086] 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 302.4g of N,N-dimethylacrylamide, and stir at 70°C for 3h.

[0087] 2) 82.4g sodium hydroxide was dissolved in 160.0g water to obtain sodium hydroxide aqueous solution, 194.7g chloroacetic acid was dissolved in 400.0g water to obtain chloroacetic acid aqueous solution; sodium hydroxide aqueous solution was added dropwise in chloroacetic acid aqueous solution to obtain sodium chloroacetic acid aqueous solution . The prepared sodium chloroacetate aqueous solution was added dropwise to the product synthesized in step 1) above, and stirred at 75° C. for 3 h. The dication and dianion tertiary amide type asphalt emulsifier was obtained, which was reserved for the emulsified asphalt test.

[0088] (2) Preparation of emulsified asphalt: ...

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Abstract

The invention discloses a dicationic and dianionic tertiary amide asphalt emulsifier and a preparation method thereof. The asphalt emulsifier is prepared from the following raw materials of N-hydrogenated tallow-1,3-diaminopropane, an alcohol solvent, N,N-dimethylacrylamide and sodium chloroacetate at the molar ratio of 1mol:(5.00-11.00)mol:(3.00-3.10)mol:(2.02-2.10)mol. The alcohol solvent is ethanol, methanol or isopropanol. The dicationic and dianionic tertiary amide asphalt emulsifier has an excellent emulsifying property, various performance indexes of the prepared emulsified asphalt are excellent, asphalt of different models can be emulsified, and the prepared emulsified asphalt is fine and uniform and has a good aggregate coating property.

Description

technical field [0001] The invention relates to a dication and dianion tertiary amide type 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 emulsifying type and compound ionic ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C231/12C07C237/06C08J3/03C08L95/00
CPCC07C231/12C07C237/06C08J3/03C08J2395/00C08L95/005
Inventor 施来顺马存飞侯璐孙亚丽孔静文
Owner SHANDONG UNIV
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