Water-soluble sulfide dimer quinoline quaternary ammonium salt corrosion inhibitor as well as preparation method and application thereof
A vulcanized dimer and corrosion inhibitor technology, which is applied in chemical instruments and methods, earthwork drilling, organic chemistry, etc., can solve the problems of high temperature resistance of 350°C, corrosion inhibition level not meeting the requirements, and poor solubility and other problems, to achieve the effect of strong corrosion inhibition performance, good corrosion inhibition effect and good corrosion inhibition performance
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Embodiment 1
[0029] Choose methanol as the solvent, and the mass ratio of dihydrazine quinoline to solvent is 50:50; prepare materials according to the molar ratio of dihydrazine quinoline, carbon disulfide, and benzyl chloride as 40:20:40. Mix dihydrazine quinoline and solvent, heat up to 145°C, add KOH accounting for 1% of the mass of dihydrazine quinoline as an accelerator, and slowly add carbon disulfide dropwise to carry out vulcanization reaction. Heat is released during the reaction, and cooling is required when the temperature exceeds 145°C. After the dropwise addition, continue to react for 8 hours; lower the temperature, keep the temperature at 85°C, add benzyl chloride dropwise to carry out water-soluble modification reaction, the reaction lasts for 8 hours, remove the solvent inside by distillation under reduced pressure, and extract the remaining substances in the system three times with ether , combine the extract phases, distill off the ether in the extract phases to obtain t...
Embodiment 2
[0031] Ethanol was selected as the solvent, the mass ratio of dihydrazine quinoline to solvent was 50:20; the molar ratio of dihydrazine quinoline, carbon disulfide, and benzyl chloride was 40:25:40. Mix dihydrazine quinoline and solvent, raise the temperature to 120°C, add KOH accounting for 3% of the mass of dihydrazine quinoline as an accelerator, slowly add carbon disulfide dropwise for vulcanization reaction, after the dropwise addition, continue the reaction for 12 hours; cool down and keep the temperature Benzyl chloride was added dropwise at 95°C for water-soluble modification reaction, the reaction lasted for 12 hours, the solvent inside was distilled off under reduced pressure, the remaining substances in the system were extracted three times with benzene, the extraction phases were combined, and the benzene in the extraction phase was evaporated to obtain Finished product of sulfurized dimer quinoline quaternary ammonium salt corrosion inhibitor.
Embodiment 3
[0033] Use isopropanol as the solvent, the mass ratio of dihydrazine quinoline to solvent is 50:50; the molar ratio of dihydrazine quinoline, carbon disulfide, and benzyl chloride is 40:20:45. Mix dihydrazine quinoline and solvent, raise the temperature to 135°C, add KOH accounting for 5% of the mass of dihydrazine quinoline as an accelerator, slowly add carbon disulfide dropwise to carry out vulcanization reaction, after the dropwise addition, continue to react for 10 hours; cool down and keep the temperature At 90°C, benzyl chloride was added dropwise to carry out water-soluble modification reaction. The reaction lasted for 10 hours. The solvent inside was distilled off under reduced pressure, and the remaining substances in the system were extracted three times with toluene. Finished product of sulfurized dimer quinoline quaternary ammonium salt corrosion inhibitor.
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