Chromium fog inhibitor and preparation method thereof
A technology of chromium mist inhibitor and base sulfonyl group is applied in the field of chromium mist inhibitor and its preparation, which can solve the problems of endangering human health, wasting chromic acid, polluting the environment, etc., and achieving the effects of low harm and easy decomposition
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Embodiment 1
[0011] Preparation of N-perfluorobutylsulfonyl-(N-perfluorohexylsulfonyl)imide sodium sulfonate: Take 1mol of N-perfluorobutylsulfonyl-(N-perfluorohexylsulfonyl)imide into In the reactor, add an appropriate amount of solvent acetone, heat and dissolve under magnetic stirring, and control the temperature at 50°C. After it is completely dissolved, slowly add 2 mol of chlorosulfonic acid, and then add 2 mol / L NaOH aqueous solution dropwise after one hour of reaction. Reaction 1 hour, then the reactant was rotary evaporated, solvent and water were removed, and dehydrated alcohol was added to remove N-perfluorobutylsulfonyl-(N-perfluorohexylsulfonyl)imide sulfonate sodium dissolved under full stirring, and then Sodium chloride was removed by suction filtration, and rotary evaporation was performed to obtain the product sodium N-perfluorobutylsulfonyl-(N-perfluorohexylsulfonyl)imidesulfonate.
[0012] It can be determined that its molecular weight is 681 through the MS figure of the...
Embodiment 2
[0016] Preparation of N-perfluorohexylsulfonyl-(N-perfluorohexylsulfonyl)imide sodium sulfonate: take 1mol of N-perfluorohexylsulfonyl-(N-perfluorohexylsulfonyl)imide into the reactor Add an appropriate amount of solvent acetone, heat to dissolve under magnetic stirring, the temperature is controlled at 50°C, and then slowly add 1 mol chlorosulfonic acid dropwise after it is completely dissolved, and then add 2 mol / L NaOH aqueous solution dropwise after reacting for one hour, and react for 1 hour , and then the reactant was rotary evaporated to remove the solvent and water, and then added absolute ethanol to remove N-perfluorohexylsulfonyl-(N-perfluorohexylsulfonyl)imide sulfonate sodium dissolved under full stirring, and then removed by suction filtration Sodium chloride, rotary steaming, the product N-perfluorohexylsulfonyl-(N-perfluorohexylsulfonyl) imide sodium sulfonate.
[0017] Preparation of N-perfluorohexylsulfonyl-(N-perfluorohexylsulfonyl)imide: Take 1mol of perfluo...
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