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Quaternary ammonium salt type hydroxypropyl sodium phosphate asphalt emulsifier and preparation method thereof

A technology of sodium hydroxypropyl phosphate and asphalt emulsifier, which is applied in chemical instruments and methods, phosphorus organic compounds, organic chemistry, etc., and can solve the problems of high requirements for production and experimental equipment, high cost of emulsifier raw materials, high temperature reaction, etc. Achieve the effect of excellent performance index, good aggregate adhesion and storage stability, and cheap raw materials

Inactive Publication Date: 2018-04-06
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The general disadvantages of the above-mentioned amphoteric asphalt emulsifiers and their preparation methods are: the cost of raw materials for the preparation of emulsifiers is high, the source is 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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  • Quaternary ammonium salt type hydroxypropyl sodium phosphate asphalt emulsifier and preparation method thereof
  • Quaternary ammonium salt type hydroxypropyl sodium phosphate asphalt emulsifier and preparation method thereof
  • Quaternary ammonium salt type hydroxypropyl sodium phosphate asphalt emulsifier and preparation method thereof

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preparation example Construction

[0054] For above asphalt emulsifier, the present invention also provides its preparation method, comprises the following steps:

[0055] (1) octadecylamine, Virahol and propylene oxide mixed reaction, obtain reaction intermediate I, the structural formula of described reaction intermediate I is

[0056] C 18 h 37 N(CH 2 CH(CH 3 )OCH 2 CH(OH)CH 3 ) 2 ;

[0057] (2) Dissolve sodium dihydrogen phosphate in water, heat to a certain temperature, then gradually add epichlorohydrin, and mix and react to obtain reaction intermediate II, which is 3-chloro-2-hydroxypropyl phosphate sodium

[0058]

[0059] (3) Add the reaction intermediate II to the reaction intermediate I, and mix and react to obtain the quaternary ammonium salt type sodium hydroxypropyl phosphate asphalt emulsifier;

[0060] Or, include the following steps:

[0061] (1) octadecylamine, Virahol and propylene oxide mixed reaction, obtain reaction intermediate I, the structural formula of described reaction ...

Embodiment 1

[0089] (1) Preparation of quaternary ammonium salt type sodium hydroxypropyl phosphate asphalt emulsifier:

[0090] 1) Add 269.5g octadecylamine, 260g isopropanol in the reactor, heat and stir to dissolve. Then, 238.1 g of propylene oxide was gradually added, and the reaction was stirred at 70° C. for 3 h.

[0091] 2) Add 245.7g sodium dihydrogen phosphate (NaH 2 PO 4 2H 2 O) and 483g of water, stirred and dissolved, heated to 85°C. Then 97.1 g of epichlorohydrin was added dropwise, and stirred at 85° C. for 7.5 h to obtain an aqueous solution of 3-chloro-2-hydroxypropyl phosphate sodium.

[0092] The above synthetic intermediate product was separated and purified by recrystallization and then detected by FTIR. The results are as follows: 3445cm -1 It is the stretching vibration absorption peak of O-H, 1635cm -1 C-O asymmetric stretching vibration absorption peak, 1297cm -1 It is the stretching vibration absorption peak of P=O, 1093cm -1 It is the stretching vibration ...

Embodiment 2

[0102] (1) Preparation of quaternary ammonium salt type sodium hydroxypropyl phosphate asphalt emulsifier:

[0103] 1) Add 269.5g octadecylamine, 260g isopropanol in the reactor, heat and stir to dissolve. Then, 238.1 g of propylene oxide was gradually added, and the reaction was stirred at 70° C. for 3 h.

[0104] 2) Add 518.9g trisodium phosphate (Na 3 PO 4 12H 2 O) and 672g of water, stirred and dissolved, heated to 42°C. Then 97.1 g of epichlorohydrin was added dropwise, and stirred at 42° C. for 5 h to obtain an aqueous solution of sodium glycidyl phosphate.

[0105] The above-mentioned intermediate product synthesized was separated and purified by recrystallization and then detected by FTIR. The results are as follows: 3015cm -1 It is the absorption peak of epoxy group C-H stretching vibration, 1673cm -1 C-O asymmetric stretching vibration absorption peak, 1443cm -1 is the asymmetric bending vibration of methylene, 1360cm -1 It is the stretching vibration absorpt...

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Abstract

The invention discloses a quaternary ammonium salt type hydroxypropyl sodium phosphate asphalt emulsifier and a preparation method thereof. The asphalt emulsifier is prepared from octadecylamine, isopropanol, epoxypropane, epoxy chloropropane and sodium dihydrogen phosphate in a molar ratio of 1 mol:(4.00-9.00) mol:(4.00-4.20) mol:(1.00-1.15) mol:(1.50-1.73) mol, or is prepared from octadecylamine, isopropanol, epoxypropane, epoxy chloropropane, trisodium phosphate and hydrochloric acid in a molar ratio of 1 mol:(4.00-9.00) mol:(4.00-4.20) mol:(1.00-1.15) mol:(1.30-1.50) mol:(1.40-1.61) mol. The synthetic raw materials of the asphalt emulsifier are easy to obtain, the production cost is low, the process is simple, and a high-temperature reaction is not needed. Various types of asphalt canbe emulsified, the prepared asphalt is fine, even and good in storage stability, and cationic emulsified asphalt can be prepared.

Description

technical field [0001] The invention relates to a quaternary ammonium salt type sodium hydroxypropyl phosphate asphalt emulsifier and a preparation method thereof, belonging to the technical field of fine chemicals. Background technique [0002] Asphalt emulsifier is a type of surfactant, which has the basic characteristics of surfactant. Due to the presence of lipophilic groups and hydrophilic groups, under the action of these two groups, it can be adsorbed on the mutually repulsive interface of asphalt and water, thereby reducing the interfacial tension between them. According to the different properties of the hydrophilic group of the emulsifier, the emulsifier is divided into anionic type, cationic type, zwitterionic type, nonionic type, etc. Among them, amphoteric emulsifiers carry positive and negative ionic charges at the same time, and the hydrophilic groups of its surface active ions have both anionic and cationic parts; its structure is different from both anionic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F9/09C08J3/03C08L95/00
CPCC07F9/091C08J3/03C08J2395/00
Inventor 施来顺于小梦巩雪笛马存飞
Owner SHANDONG UNIV
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