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Preparation method for fatty acid derivate cation asphalt emulsifying agent

A technology of fatty acid derivatives and asphalt emulsifier, which is applied in building structures, building components, building insulation materials, etc., can solve the problems of high price and complicated preparation process, and achieves low concentration, good water solubility and simple preparation method. Effect

Inactive Publication Date: 2012-07-11
SHAANXI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problem of the single molecular structure of the emulsifier is still not solved, and the preparation process is complicated and the price is high

Method used

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  • Preparation method for fatty acid derivate cation asphalt emulsifying agent
  • Preparation method for fatty acid derivate cation asphalt emulsifying agent
  • Preparation method for fatty acid derivate cation asphalt emulsifying agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] 1. Prepare mixed fatty acids

[0028] Add 46.2 g of sunflower oil containing 70% linoleic acid, 1.4 g of sodium dodecyl sulfonate, 4.6 g of sulfuric acid solution with a mass fraction of 98%, and 92.4 g of distilled water into the reactor. The sunflower oil and dodecane The mass ratio of sodium sulfonate, 98% sulfuric acid solution and distilled water is 1:0.03:0.1:2, the temperature is increased to 95° C., the reaction is kept at a constant temperature for 12 hours, and the oil and water are separated after the reaction is completed to obtain the mixed fatty acid.

[0029] 2. Preparation of tricarboxylic acid intermediates

[0030] Mix 20.0g of mixed fatty acid, 5.4g of maleic anhydride, anhydrous AlCl 3 0.4g is added to the reactor and mixed evenly, the mass ratio of mixed fatty acid and maleic anhydride is 3.7:1, maleic anhydride and anhydrous AlCl 3 The molar ratio is 1:0.05, the temperature is raised to 140°C, and the reaction is kept at a constant temperature for 4 hour...

Embodiment 2

[0036] 1. Prepare mixed fatty acids

[0037] Add 46.0 g of soybean oil containing 50-60% linoleic acid, 1.2 g of sodium dodecylbenzene sulfonate, 5.0 g of sulfuric acid solution with a mass fraction of 98%, and 46.0 g of distilled water into the reactor. The mass ratio of sodium alkylbenzene sulfonate, 98% sulfuric acid solution and distilled water is 1:0.026:0.11:1, the temperature is raised to 100°C, and the reaction is kept at a constant temperature for 10 hours. After the reaction, oil and water are separated to obtain mixed fatty acid.

[0038] 2. Preparation of tricarboxylic acid intermediates

[0039] Mix 20.0g of mixed fatty acid, 4.5g of maleic anhydride, and anhydrous AlCl 3 0.3g is added to the reactor and mixed evenly, the mass ratio of mixed fatty acid and maleic anhydride is 4.4:1, maleic anhydride and anhydrous AlCl 3 The molar ratio of is 1:0.05, the temperature is raised to 160°C, and the reaction is kept at a constant temperature for 4 hours to obtain the tricarbox...

Embodiment 3

[0045] 1. Prepare mixed fatty acids

[0046] Add 46.0 g of cottonseed oil containing 44.9-55.0% of linoleic acid, 1.2 g of sodium lauryl sulfonate, 5.0 g of sulfuric acid solution with a mass fraction of 98%, and 46 g of distilled water into the reactor. The mass ratio of sodium sulfonate, 98% sulfuric acid solution and distilled water is 1:0.026:0.11:1, the temperature is raised to 100°C, and the reaction is kept at a constant temperature for 9 hours. After the reaction, the oil and water are separated to obtain the mixed fatty acid.

[0047] 2. Preparation of tricarboxylic acid intermediates

[0048] Mix 20.0g of mixed fatty acid, 4.6g of butenedioic acid, anhydrous ZnCl 2 0.25g is added to the reactor and mixed evenly, the mass ratio of mixed fatty acid and butenedioic acid is 4.3:1, butenedioic acid and anhydrous ZnCl 2 The molar ratio of is 1:0.02, the temperature is raised to 140°C, and the reaction is kept at a constant temperature for 4 hours to obtain the tricarboxylic acid...

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Abstract

The invention relates to a preparation method for a fatty acid derivate cation asphalt emulsifying agent. According to the method, an oil material containing 45-75% of linoleic acid is adopted as a raw material; normal pressure hydrolysis is performed to obtain a mixed fatty acid; the mixed fatty acid reacts with an olefinic acid or an anhydride to obtain a dicarboxylic acid intermediate or a tricarboxylic acid intermediate; the dicarboxylic acid intermediate or the tricarboxylic acid intermediate reacts with a mixed amine with different types to prepare the fatty acid derivate cation asphalt emulsifying agent with characteristics of strong surface activity and small critical micelle concentration. According to the present invention, the preparation method is simple; the raw material is easy to obtain; the prepared fatty acid derivate cation asphalt emulsifying agent has good water solubility, the water solution of the fatty acid derivate cation asphalt emulsifying agent has low surface tension, the critical micelle concentration range is 0.01-0.05 wt.%, the concentration for formation of the micelle is low, and the surface activity is strong; the emulsifying agent of the present invention is used for emulsifying the asphalt, the obtained cation asphalt is the medium breaking type asphalt or the slow breaking type asphalt, has characteristics of fine and uniform particles, and good storage stability, and has wide applicability.

Description

Technical field [0001] The invention relates to an asphalt emulsifier, in particular to a preparation method of a fatty acid derivative cationic asphalt emulsifier. Background technique [0002] Cationic asphalt emulsifiers are a type of surfactants containing nitrogen cationic hydrophilic groups. The emulsified asphalt prepared with cationic emulsifier has a positive charge in its particles and has stronger adhesion to stones than anionic or non-ionic surfactants, causing the emulsion to demulsify and solidify quickly, shortening the time for open traffic. Due to the excellent performance of cationic emulsified asphalt, it has been vigorously promoted and widely used in highway systems, including the construction of slurry seals, gravel seals and modified asphalt slurry seals, as well as the use of permeable layer oil and bonding oil. use. [0003] With the application of cationic emulsified asphalt, the varieties of asphalt emulsifiers are gradually enriched. At present, the co...

Claims

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Application Information

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IPC IPC(8): C08J3/03C08L95/00
Inventor 陈亚芍郭彦强王晓娟鲍琳弥海晨
Owner SHAANXI NORMAL UNIV
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