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High-cation-degree asphalt emulsifier and application thereof

A technology of asphalt emulsifier and cationic degree, applied in organic chemistry, building components, building insulation materials, etc., can solve the problem of inability to prepare emulsified asphalt with high solid content, and achieve large steric hindrance, high cationic degree, and strong permeability. Effect

Inactive Publication Date: 2016-02-03
HAISO TECH +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve some problems existing in the existing cationic asphalt emulsifiers, especially the inability to prepare emulsified asphalt with high solid content, and combine the molecular structures of two types of cationic asphalt emulsifiers, quaternary ammonium salts and imidazolines Features, using the principle of molecular structure design to synthesize a high cationic asphalt emulsifier with both imidazoline groups and multiple quaternary ammonium groups

Method used

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  • High-cation-degree asphalt emulsifier and application thereof
  • High-cation-degree asphalt emulsifier and application thereof
  • High-cation-degree asphalt emulsifier and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0034] (1) Preparation of high cationic asphalt emulsifier

[0035] 1) Add 290.4g (1.0mol) of dodecyl-terebenzoic acid into the reaction vessel, stir and dehydrate at 110°C and 5mmHg for 1 hour, then add 103.2g (1.0mol) of diethylenetriamine into the reaction vessel, Heat up to 150°C and stir for 6 hours, continue to heat up to 200°C for 5 hours, then cool down to 50°C, add 236g of absolute ethanol and stir to dissolve for 1h to obtain intermediate I solution; 2) Add 470g of 40% (1.0mol) 3 -Chloro-2-hydroxypropyltrimethylammonium chloride aqueous solution was added dropwise to the ethanol solution of intermediate I in 1h, and after the addition was completed, the reaction was continued at 70°C for 4h to obtain intermediate II; 3) intermediate II was cooled After reaching 60° C., add 243 g of 30% (2.0 mol) industrial hydrochloric acid within 30 minutes, and continue stirring for 1 hour to obtain the final product, a highly cationic asphalt emulsifier. The solid content of the ...

Embodiment 2

[0041] (1) Preparation of high cationic asphalt emulsifier

[0042]1) Add 290.4g (1.0mol) of dodecyl-terebenzoic acid into the reaction vessel, stir and dehydrate at 110°C and 5mmHg for 1 hour, then add 113.5g (1.1mol) of diethylenetriamine into the reaction vessel, Raise the temperature to 155°C and stir the reaction for 5h, continue to heat up to 210°C for 3h, then cool down to 60°C, add 283g of absolute ethanol and stir to dissolve for 1h to obtain the intermediate I solution; -Chloro-2-hydroxypropyltrimethylammonium chloride aqueous solution was added dropwise to the ethanol solution of intermediate I in 1h, after the dropwise addition was completed, the temperature was raised to 80°C and reacted for 3h to obtain intermediate II; 3) Intermediate II After cooling to 60° C., add 401.5 g of 30% (3.3 mol) industrial hydrochloric acid within 30 minutes, and continue stirring for 30 minutes to obtain the final product of high cationic asphalt emulsifier. The solid content of th...

Embodiment 3

[0048] (1) Preparation of high cationic asphalt emulsifier

[0049] 1) Add 290.4g (1.0mol) of dodecyl-terebenzoic acid into the reaction vessel, stir and dehydrate at 110°C and 5mmHg for 1 hour, then add 123.8g (1.2mol) of diethylenetriamine into the reaction vessel, Heat up to 160°C and stir for 3 hours, continue to heat up to 220°C for 2 hours, then cool down to 70°C, add 331.4g of absolute ethanol and stir to dissolve for 1h to obtain Intermediate I solution; 2) Add 564g of 50% (1.5mol) 3-Chloro-2-hydroxypropyltrimethylammonium chloride aqueous solution was added dropwise to the ethanol solution of intermediate I in 1 hour, and after the dropwise addition was completed, the temperature was raised to 90°C and reacted for 2.5 hours to obtain intermediate II; 3) intermediate After the body II was cooled to 70°C, 584g of 30% (4.8mol) industrial hydrochloric acid was added within 30 minutes, and the stirring was continued for 1 hour to obtain the final product of high cationic a...

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Abstract

The invention belongs to the field of asphalt emulsifiers and in particular relates to a high-cation-degree asphalt emulsifier and an application thereof. The high-cation-degree asphalt emulsifier has a structural formula shown in the specification. A preparation method of the high-cation-degree asphalt emulsifier comprises the following steps: (1) adding diethylenetriamine into anhydrous dodecyl para toluic acid, heating to 150-160 DEG C, stirring to perform amidation reaction, further heating to 200-220 DEG C to perform dehydration reaction until no distillate is generated, then cooling to 50-70 DEG C, adding a solvent, and stirring for dissolving so as to obtain an solution of an imidazoline cyclic intermediate compound I; (2) then dropwise adding 3-chloro-2-hydroxypropyl trimethyl ammonium chloride aqueous solution into an imidazoline cyclic intermediate compound solution, and then further performing reaction at 70-100 DEG C to obtain an intermediate II; and (3) cooling the intermediate II, and then adding hydrochloric acid to perform acidification reaction to obtain the high-cation-degree asphalt emulsifier. The asphalt emulsifier provided by the invention can be used for preparing emulsified asphalt of which the solid content reaches more than or equal to 75%.

Description

technical field [0001] The invention belongs to the field of asphalt emulsifiers, in particular to a highly cationic asphalt emulsifier and its application. Background technique [0002] Emulsified asphalt is more and more widely used in road construction and road maintenance due to its ideal road effect, energy saving, reduction of environmental pollution, improvement of construction conditions and extension of construction season. [0003] 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, but also directly determines important indicators such as the breaking speed and setting time of emulsified asphalt. At present, the main varieties of cationic asphalt emulsifiers at home and abroad include alkylamines or alkylpolyamines, ammonium oxides, quaternary ammonium salts, lignoamines, amides and imidazolines. Alkylamine or alkylpolyamine asphalt emulsif...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J3/03C08L95/00C07D233/06
Inventor 赵帆詹洪王友奎段冲熊巍雷宗建
Owner HAISO TECH
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