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Dication and dianion type asphalt emulsifier and preparation method thereof

A technology of asphalt emulsifier and double anion, which is applied in the field of double cationic double anionic asphalt emulsifier and its preparation, can solve the problems of high requirements for production experimental equipment, high cost of emulsifier raw materials, poor stability of emulsified asphalt, etc., and achieve production cost Low, improve emulsification performance, improve the effect of performance

Inactive Publication Date: 2016-03-09
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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
[0005] Although the types of asphalt emulsifiers began to be abundant, due to the differences in asphalt sources and refining processes, the composition of asphalt was different, and it was difficult for one emulsifier to have a good emulsifying effect on various asphalt; moreover, the stability of emulsified asphalt was relatively low. In addition, although the above-mentioned prior art discloses multiple cationic asphalt emulsifiers and preparation methods thereof, the cost of raw materials for the preparation of emulsifiers is relatively high, the source is limited, high-temperature reactions are required during preparation, and the requirements for production and experimental equipment are relatively high. high

Method used

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  • Dication and dianion type asphalt emulsifier and preparation method thereof
  • Dication and dianion type asphalt emulsifier and preparation method thereof
  • Dication and dianion type asphalt emulsifier and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] (1) Preparation of double cation double anionic asphalt emulsifier:

[0049] 1) Add 269.5g octadecylamine, 260g isopropanol in the reactor, heat and stir to dissolve. Then 73.5g of acrylic acid was added dropwise, and the reaction was stirred at 70°C for 2h.

[0050] 2) Add 193.1g of 33% trimethylamine aqueous solution into the reactor, gradually add 131.2g of 30% industrial hydrochloric acid, then gradually add 97.1g of epichlorohydrin, stir and react at 30-70°C for 2h, and obtain reaction intermediate A. The prepared reaction intermediate A was added dropwise to the synthesis product in step 1) above, and stirred at 70° C. for 2 h.

[0051] 3) 41.2g sodium hydroxide was dissolved in 80.0g water to obtain sodium hydroxide aqueous solution, 97.3g chloroacetic acid was dissolved in 180.0g water to obtain chloroacetic acid aqueous solution; sodium hydroxide aqueous solution was added dropwise in chloroacetic acid aqueous solution to obtain sodium chloroacetic acid aqueou...

Embodiment 2

[0060] (1) Preparation of double cation double anionic asphalt emulsifier:

[0061] 1) Add 269.5g octadecylamine, 260g isopropanol in the reactor, heat and stir to dissolve. Then 73.5g of acrylic acid was added dropwise, and the reaction was stirred at 65°C for 3h.

[0062] 2) Add 109.1g of triethylamine into the reactor, gradually add 131.2g of 30% industrial hydrochloric acid, then gradually add 97.1g of epichlorohydrin, stir and react at 30-70°C for 2h, and obtain reaction intermediate B. The prepared reaction intermediate B was added dropwise to the synthesis product in step 1) above, and stirred at 65° C. for 3 h.

[0063] 3) 41.2g sodium hydroxide was dissolved in 80.0g water to obtain sodium hydroxide aqueous solution, 97.3g chloroacetic acid was dissolved in 180.0g 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 pre...

Embodiment 3

[0077] (1) Preparation of double cation double anionic asphalt emulsifier:

[0078] 1) Add 269.5g octadecylamine, 260g isopropanol in the reactor, heat and stir to dissolve. Then 73.5g of acrylic acid was added dropwise, and the reaction was stirred at 70°C for 2h.

[0079] 2) Add 189.6g of 85% triethanolamine to the reactor, gradually add 131.2g of 30% industrial hydrochloric acid, then gradually add 97.1g of epichlorohydrin, stir and react at 30-70°C for 2h, and obtain reaction intermediate C. The prepared reaction intermediate C was added dropwise to the synthesis product in step 1) above, and stirred at 70° C. for 2 h.

[0080] 3) 41.2g sodium hydroxide was dissolved in 80.0g water to obtain sodium hydroxide aqueous solution, 97.3g chloroacetic acid was dissolved in 180.0g 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...

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Abstract

The invention discloses a dication and dianion type asphalt emulsifier, and belongs to the field of fine chemical engineering. The emulsifier is prepared from octadecylamine, an alcohol solvent, acrylic acid, small-carbon-number tertiary amine, industrial hydrochloric acid, epoxy chloropropane and sodium chloroacetate at the molar ratio of 1 mol:(4.00-9.00) mol: (1.00-1.06) mol: (1.02-1.10) mol: (1.02-1.10) mol: (1.02-1.08) mol: (1.01-1.08) mol. The asphalt emulsifier is prepared from the synthetic raw materials which are easy to obtain and is low in production cost, simple in process, free of high-temperature reactions and capable of emulsifying asphalt of different models; prepared emulsified asphalt is fine, uniform, good in storage stability and suitable for spreading of chip seal coat oil or prime coat oil or tack coat oil of highways; the asphalt emulsifier has the characteristics of a quick-breaking asphalt emulsifier.

Description

technical field [0001] The invention relates to a double cation and double anion asphalt emulsifier and a preparation method thereof, belonging to the technical field of fine chemicals. Background technique [0002] Emulsified asphalt, especially cationic emulsified asphalt, is widely used in road construction and pavement maintenance because of its energy-saving and environmental protection, can improve construction conditions, and can effectively reduce excessive aging of asphalt and many other excellent application characteristics. [0003] The most critical factor affecting the road performance of emulsified asphalt is the asphalt emulsifier. At present, the main varieties of cationic asphalt emulsifiers at home and abroad include organic amines, quaternary ammonium salts, imidazolines, amides, etc., among which quaternary ammonium salt emulsifiers are The most widely used. With the application of cationic emulsified asphalt, the varieties of asphalt emulsifiers are gra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J3/02C08L95/00C07C227/08C07C229/16
CPCC07C227/06C07C227/08C07C227/18C07D301/27C07D303/36C08J3/02C08J2395/00C08L95/00C07C229/16C07C229/12
Inventor 施来顺陈孟谢朝仁
Owner SHANDONG UNIV
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