A kind of secondary amide polyamine quaternary ammonium salt amphoteric asphalt emulsifier and preparation method thereof

A secondary amide polyamine quaternary ammonium salt, the secondary amide polyamine quaternary ammonium salt technology, applied in the preparation of carboxylic acid amides, chemical instruments and methods, preparation of organic compounds and other directions, can solve the requirements of high production experimental equipment, emulsifier High cost of raw materials, cumbersome preparation steps, etc., to achieve the effects of excellent performance indicators, good aggregate adhesion and storage stability, and improved stability

Active Publication Date: 2021-04-27
SHANDONG UNIV
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  • Abstract
  • Description
  • Claims
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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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  • A kind of secondary amide polyamine quaternary ammonium salt amphoteric asphalt emulsifier and preparation method thereof
  • A kind of secondary amide polyamine quaternary ammonium salt amphoteric asphalt emulsifier and preparation method thereof
  • A kind of secondary amide polyamine quaternary ammonium salt amphoteric asphalt emulsifier and preparation method thereof

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preparation example Construction

[0040] For above asphalt emulsifier, the present invention also provides its preparation method, comprises the following steps:

[0041] (1) Polyethylene polyamine, alcohol solvent and acrylic acid are mixed and reacted to obtain reaction intermediate I, and the general structural formula of said reaction intermediate I is:

[0042] NH 2 (C 2 h 4 NH) n CH 2 CH 2 COOH,

[0043] Among them, n=2-4;

[0044] (2) Add epichlorohydrin gradually again in reaction intermediate I, mixed reaction, obtain reaction intermediate II, the general structural formula of described reaction intermediate II is:

[0045] ClCH 2 CH(OH)CH 2 NH(C 2 h 4 NH) n CH 2 CH 2 COOH,

[0046] Among them, n=2-4;

[0047] (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 polyamine quaternary ammonium salt amphoteric asphalt emulsifier.

[0048] In some preferred technical schemes of...

Embodiment 1

[0069] (1) Preparation of secondary amide polyamine quaternary ammonium salt amphoteric asphalt emulsifier (n=4):

[0070] 1) Add 208.45g of tetraethylenepentamine 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.

[0071] 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.

[0072] 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 polyamine quaternary ammonium salt amphoteric asphalt emulsifier was obtained, which was reserved for the emulsified asphalt test.

[0073] The synthesized product was separated and purified by recrystallization and then det...

Embodiment 2

[0083] (1) Preparation of secondary amide polyamine quaternary ammonium salt amphoteric asphalt emulsifier (n=3):

[0084] 1) Add 160.9g triethylenetetramine and 300g 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.

[0085] 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.

[0086] 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 polyamine quaternary ammonium salt amphoteric asphalt emulsifier was obtained, which was reserved for the emulsified asphalt test.

[0087] The synthesized product was separated and purified by recrystallization and then detected by ...

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Abstract

The invention discloses a secondary amide polyamine quaternary ammonium salt amphoteric asphalt emulsifier and a preparation method thereof. The asphalt emulsifier is prepared from the following molar ratio raw materials: cocoyl propyl dimethyl tertiary amine, alcohol The molar ratio of solvent-like solvent, water, epichlorohydrin, polyethylene polyamine, and acrylic acid is 1mol: (4.50‑10.00) mol: (14.00‑18.00) mol: (1.00‑1.15) mol: (1.00‑1.20) mol: (1.00‑1.20) mol. The alcoholic solvent is ethanol, methanol or isopropanol. The polyethylene polyamine is diethylenetriamine, triethylenetetramine or tetraethylenepentamine. The synthetic raw materials of the asphalt emulsifier of the invention are easy to obtain, the production cost is low, the process is simple, and no high-temperature reaction is required. It can emulsify various types of asphalt, and the prepared emulsified asphalt is fine and uniform, and has good storage stability.

Description

technical field [0001] The invention relates to a secondary amide polyamine 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 because of its energy saving and environmental protection, can improve construction conditions, has strong adhesion to stone materials, and can effectively reduce excessive aging of asphalt and many other excellent application characteristics. [0003] The emulsified asphalt used for micro-surface is required to be slow-cracking and fast-setting type, which not only requires sufficient...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J3/03C07C233/36C07C231/12C08L95/00
CPCC07C231/12C07C233/36C08J3/03C08J2395/00
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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