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Rosin-based imidazoline quaternary ammonium salt compound and preparation method thereof

A technology of quaternary ammonium salt compound and rosin-based imidazoline, which is applied in the field of rosin-based imidazoline quaternary ammonium salt compound and its preparation, can solve problems such as unsolved molecular design, achieve superior corrosion inhibition performance, improve purity, and enhance adsorption capacity Effect

Active Publication Date: 2015-11-25
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, the above studies do not address the problem of molecular design

Method used

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  • Rosin-based imidazoline quaternary ammonium salt compound and preparation method thereof
  • Rosin-based imidazoline quaternary ammonium salt compound and preparation method thereof
  • Rosin-based imidazoline quaternary ammonium salt compound and preparation method thereof

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preparation example Construction

[0032] see figure 1 , the preparation method of rosin-based imidazoline quaternary ammonium salt compound of the present invention comprises the following steps:

[0033] 1) Under nitrogen protection, rosin, diethylenetriamine, water-carrying agent and catalyzer are joined in the reactor that has condensing pipe, stirrer, thermometer, water trap, add magnesium chip or zinc particle simultaneously, and in 150 ℃~160℃ for 4~5 hours. During the reaction process, it can be seen that water is taken out by the solvent. When the water output is basically stable, the temperature is gradually raised to 195℃~205℃ at a heating rate of 1℃ / min. After reacting for 4-6 hours, the water separation volume is basically stable, and the reaction is completed to obtain a rosin imidazoline intermediate; after the obtained rosin imidazoline intermediate is purified with petroleum ether, a purified rosin imidazoline intermediate is obtained;

[0034] Wherein, the substance ratio of rosin and diethyle...

Embodiment 1

[0041] see figure 1 , the preparation of rosin-based imidazoline quaternary ammonium compound, comprising the following steps:

[0042] 1) Add rosin, diethylenetriamine, water-carrying agent, catalyst and magnesium chips to the 2In the four-necked flask of the protective device, dehydrate at 150°C for 4 hours. At this time, water can be seen to be carried out by the solvent, and then gradually increase the temperature to 195°C at a heating rate of 1°C / min, and dehydrate at this temperature 6h, obtain rosin imidazoline intermediate;

[0043] The rosin imidazoline intermediate is distilled off under reduced pressure to remove the unreacted solvent, then washed with petroleum ether and stirred to remove the unreacted rosin, and the purified rosin imidazoline intermediate is obtained;

[0044] Among them, the material ratio of rosin and diethylenetriamine is 1:2, the amount of water-carrying agent added is 20% of the total mass of rosin and diethylenetriamine, and the water-carr...

Embodiment 2

[0048] The preparation of rosin-based imidazoline quaternary ammonium compound comprises the following steps:

[0049] 1) Add rosin, diethylenetriamine, water-carrying agent, catalyst and zinc particles to the 2 In the four-necked flask of the protective device, dehydration was carried out at 160°C for 5 hours. During the reaction, water was gradually seen to be taken out by the solvent, and the water output was basically stable after 5 hours of reaction, and then the temperature was gradually raised to 205 ° C, and dehydration at this temperature for 4 hours, the volume of the separated water is basically stable, and the rosin imidazoline intermediate is obtained;

[0050] The rosin imidazoline intermediate is distilled off under reduced pressure to remove the unreacted solvent, then washed with petroleum ether and stirred to remove the unreacted rosin, and the purified rosin imidazoline intermediate is obtained;

[0051] Among them, the material ratio of rosin and diethylen...

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Abstract

The invention relates to a rosin-based imidazoline quaternary ammonium salt compound and a preparation method thereof. The preparation method of the rosin-based imidazoline quaternary ammonium salt compound comprises the following steps: adding rosin, diethylenetriamine, an azeotropic agent and a catalyst into a reactor, dehydrating at the temperature of 150-160 DEG C, then dehydrating at the temperature of 195-205 DEG C, adding an organic solvent and a phase transfer catalyst, heating to 70-90 DEG C, dropwise adding a quaternary ammonization reagent, and then carrying out reaction for 2-4 hours. The rosin-based imidazoline quaternary ammonium salt compound provided by the invention has the advantages that 3-chloro-2-hydroxyl sodium propylsulphonate is taken as a quaternary ammonization reagent, and molecules of the obtained quaternary ammonization product contain sulphonate negative ions and nitrogen positive ions, so that the obtained quaternary ammonization product is amphoteric; meanwhile, the product contains two good hydrophilic groups, namely -OH and -SO3, the water solubility requirement of the imidazoline product can be met, and the problems that a corrosion inhibitor is well adsorbed on a metal surface and the product is applied in a relatively wide range can be solved, so that the corrosion inhibitor has excellent corrosion inhibition performance and can be popularized during industrialization.

Description

technical field [0001] The invention relates to the field of fine chemicals, in particular to a rosin-based imidazoline quaternary ammonium salt compound and a preparation method thereof. Background technique [0002] Imidazoline is often used as an intermediate in the synthesis of corrosion inhibitors. It has no special pungent odor, good thermal stability, and low toxicity. Especially when the metal is in contact with an acidic medium, it can form a monomolecular adsorption film on the metal surface to change the H + It can also complex some oxidants in the solution to reduce its electrode potential to achieve the purpose of corrosion inhibition. [0003] Imidazoline corrosion inhibitors are mainly imidazoline derivatives synthesized from oleic acid and polyamines as initiators. [0004] Yi Xiang et al. (Journal of Hunan Institute of Engineering, 2010 (20), 59-62) synthesized oil-soluble rosin-based imidazoline with rosin and diethylenetriamine as the main raw materials, ...

Claims

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Application Information

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IPC IPC(8): C07D233/12C23F11/16
CPCC07D233/12C23F11/163
Inventor 郭睿李晓芳甄建斌程敏杨江月李欢乐刘爱玉王超
Owner SHAANXI UNIV OF SCI & TECH
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