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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 high cost of emulsifier raw materials, production experiments The problems of high equipment requirements and high cost can achieve the effect of good aggregate adhesion and storage stability, excellent performance indicators, and enhanced charge strength.

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

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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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  • Secondary amide polyamine quaternary ammonium salt amphoteric asphalt emulsifier and preparation method thereof
  • Secondary amide polyamine quaternary ammonium salt amphoteric asphalt emulsifier and preparation method thereof
  • 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 284.5 g of cocoyl propyl dimethyl tertiary amine to the reaction intermediate II. After the addition is complete, react at 75° C. for 0.5 h, then add 300 g of water. After adding water, react at 75° C. for 3 h. 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 a...

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 raw materials according to a molar ratio of cocoyl propyl dimethyl tertiary amine: an alcohol solvent: water: epoxy chloropropane: polyethylene polyamine: 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, and the polyethylene polyamine is diethylene triamine, triethylene tetramine or tetraethylene pentamine. 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 prepared emulsified asphalt is fine, smooth 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 Applications(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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