Preparation method for corrosion inhibition component as well as product and application thereof
A technology of corrosion inhibition and corrosion inhibitor, applied in chemical instruments and methods, transportation and packaging, dissolution, etc., can solve the problems of unsatisfactory corrosion inhibition effect, complex synthesis process, poor water solubility, etc., and achieve low cost and simple preparation method , the effect of high solubility
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[0031] The invention provides a method for preparing corrosion inhibitor components. The organic ammonium salt and thiocyanate are reacted in a polar solvent to form a precipitate, and the insoluble matter and polar solvent in the reaction system are removed to obtain the The corrosion inhibitor component.
[0032] In the organic ammonium salt, the counter anion is a halide ion, a nitrate ion, a sulfate ion, a phosphate ion or a sulfonate ion; wherein the sulfonate ion can be a sulfamate ion, methanesulfonate ion or p-toluenesulfonate ion. Acid ion.
[0033] According to the present invention, the total number of carbon atoms in the organic ammonium salt is 8-30.
[0034] According to the present invention, the organic ammonium salt is a quaternary ammonium salt or an organic ammonium salt formed from nitrogen in an aromatic heterocycle.
[0035] According to the present invention, in the quaternary ammonium salt, at least one of the groups connected to the quaternary ammonium nitrog...
Example Embodiment
[0052] Example 1
[0053] Add 2.21g dodecylammonium chloride (0.01mol) and 0.81g sodium thiocyanate (0.01mol) to 15mL ethanol / water (v / v=4:1), heat to 70℃, and reflux with stirring Reaction for 1h. After the reaction is completed, cool to room temperature and stand for layering. The lower layer is white precipitate, and the upper layer is light yellow clear solution. Filter and wash the precipitate with ethanol. Combine the upper clear solution and the washing solution, and spin dry under reduced pressure to obtain a solid product. It weighs 2.29g.
[0054] The characterization results of the product are as follows:
[0055] 1H NMR (400MHz, DMSO): δ3.45-3.30 (3H, br), 2.79-2.70 (2H, m), 1.56-1.46 (2H, m), 1.39-1.44 (18H, m), 0.89-0.81 ( 3H,t)
[0056] 13C NMR (400MHz, DMSO): δ129.66,39.83,38.59,31.19,28.92,28.83,28.73,28.61,28.42,26.81,25.68,21.99,13.85
[0057] MS(ESI-MS): 186.1,(C 12 H 25 NH 3 + ]
Example Embodiment
[0058] Example 2
[0059] The same method as in Example 1 is used, except that the solvent is 15 mL of ethanol. The dry weight of the product is 2.19g.
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