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Secondary amide diamine quaternary ammonium salt amphoteric asphalt emulsifier and preparation method thereof

A technology of asphalt emulsifier and quaternary ammonium salt, which is applied in the preparation of carboxylic acid amide, the preparation of cyanide reaction, chemical instruments and methods, etc., can solve the problems of high cost of emulsifier raw materials, high cost, and high requirements for production experimental equipment, and achieves Good aggregate adhesion and storage stability, enhanced charge strength, and excellent performance indicators

Active Publication Date: 2020-06-23
SHANDONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The inventor found that the disadvantage of this method is that the preparation steps are cumbersome, the cost is high, and high temperature reaction is required
[0005] The general disadvantages of the above cationic asphalt emulsifiers and their preparation methods are: the cost of raw materials for the preparation of emulsifiers is high, the sources are 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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  • Secondary amide diamine quaternary ammonium salt amphoteric asphalt emulsifier and preparation method thereof
  • Secondary amide diamine quaternary ammonium salt amphoteric asphalt emulsifier and preparation method thereof
  • Secondary amide diamine quaternary ammonium salt amphoteric asphalt emulsifier and preparation method thereof

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preparation example Construction

[0035] For above asphalt emulsifier, the present invention also provides its preparation method, comprises the following steps:

[0036] (1) β-hydroxyethylethylenediamine, alcohol solvent and acrylic acid are mixed and reacted to obtain reaction intermediate I, and the structural formula of said reaction intermediate I is:

[0037] HOC 2 h 4 NHC 2 h 4 NHCH 2 CH 2 COOH;

[0038] (2) Add epichlorohydrin gradually again in reaction intermediate I, mixed reaction, obtain reaction intermediate II, the structural formula of described reaction intermediate II is:

[0039]

[0040] (3) Gradually add cocoyl propyl dimethyl tertiary amine to the reaction intermediate II, mix and react, then add water, mix and react, and obtain the secondary amide diamine quaternary ammonium salt amphoteric asphalt emulsifier.

[0041]In some preferred technical solutions of the present invention, the mol ratio of cocoyl propyl dimethyl tertiary amine, alcoholic solvent, water, epichlorohydrin,...

Embodiment 1

[0060] (1) Preparation of secondary amide diamine quaternary ammonium salt amphoteric asphalt emulsifier:

[0061] 1) Add 114.6g of β-hydroxyethylethylenediamine and 300g of isopropanol into the reactor, heat and stir to mix. Then gradually added 79.3g of acrylic acid, and stirred at 75°C for 2h to obtain reaction intermediate I.

[0062] 2) Gradually add 97.07 g of epichlorohydrin to the reaction intermediate I. After the addition is complete, react at 75° C. for 2 hours to obtain the reaction intermediate II.

[0063] 3) Gradually add 284.5g cocoyl propyl dimethyl tertiary amine to the reaction intermediate II. After the addition is complete, react at 75°C for 0.5h, then add 300g of water. After adding water, react at 75°C for 3h. The secondary amide diamine quaternary ammonium salt amphoteric asphalt emulsifier was obtained, which was reserved for the emulsified asphalt test.

[0064] The synthesized product was separated and purified by recrystallization and then detecte...

Embodiment 2

[0075] (1) Preparation of secondary amide diamine quaternary ammonium salt amphoteric asphalt emulsifier:

[0076] 1) Add 114.6g of β-hydroxyethylethylenediamine and 300g of absolute ethanol into the reactor, heat and stir to mix. Then gradually added 79.3g of acrylic acid, and stirred at 65°C for 3h to obtain reaction intermediate I.

[0077] 2) Gradually add 97.07 g of epichlorohydrin to the reaction intermediate I. After the addition is complete, react at 75° C. for 2 hours to obtain the reaction intermediate II.

[0078] 3) Gradually add 284.5g cocoyl propyl dimethyl tertiary amine to the reaction intermediate II. After the addition is complete, react at 75°C for 0.5h, then add 300g of water. After adding water, react at 75°C for 3h. The secondary amide diamine quaternary ammonium salt amphoteric asphalt emulsifier was obtained, which was reserved for the emulsified asphalt test.

[0079] (2) Preparation of emulsified asphalt:

[0080] Take 300g of AH-70# asphalt, heat ...

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Abstract

The invention discloses a secondary amide diamine quaternary ammonium salt amphoteric asphalt emulsifier and a preparation method thereof. The asphalt emulsifier is prepared from the following raw materials according to a molar ratio of cocoyl propyl dimethyl tertiary amine: a alcohol solvent: water: epoxy chloropropane: beta-hydroxyethyl ethylene diamine: acrylic acid of 1 mol to (4.50 to 10.00)mol to (14.00 to 18.00) mol to (1.00 to 1.15) mol to (1.00 to 1.20) mol to (1.00 to 1.20) mol, wherein the alcohol solvent is ethanol, methanol or isopropanol. The asphalt emulsifier has the advantages of easily available synthesis raw materials, low production cost and simple technique, and does not need high-temperature reaction. The emulsifier can emulsify various types of asphalt, the preparedemulsified asphalt is fine and uniform, the storage stability is good, and cationic or anionic emulsified asphalt can be prepared.

Description

technical field [0001] The invention relates to a secondary amide diamine quaternary ammonium salt amphoteric asphalt emulsifier and a preparation method thereof, belonging to the technical field of fine chemicals. Background technique [0002] Emulsified asphalt is an oil-in-water liquid asphalt emulsion formed by asphalt and water under the action of an emulsifier. Emulsified asphalt is mainly divided into cationic emulsified asphalt, anionic emulsified asphalt and nonionic emulsified asphalt. Among them, cationic emulsified asphalt is widely used in road construction and road maintenance due to its energy-saving and environmental protection, can improve construction conditions, has strong adhesion to stone materials, and can effectively reduce over-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 cationi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C231/12C07C233/36C08J3/03C08L95/00
CPCC07C227/08C07C227/16C07C231/12C07C233/36C08J3/03C08J2395/00C07C229/12
Inventor 施来顺陈雅雯顾晨阳巩雪笛王天曜于小梦
Owner SHANDONG UNIV
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