Manufacture of cyclohexanone oxime

Details Manufacture of cyclohexanone oxime Manufacture of cyclohexanone oxime

1976-01-26

1977-06-21

Schwartz, Gerald A.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07C13104

Patent

active

040311392

ABSTRACT:
An improved process for the manufacture of cyclohexanone oxime by reacting cyclohexanone with an aqueous hydroxylammonium-ammonium sulfate solution at temperatures above the melting point of cyclohexanone oxime by the countercurrent process, the improvement consisting in that the reaction is carried out in the absence of solvents and neutralizing and/or buffer salts at pHs of up to 0.5 until equilibrium is reached, the oximes resulting during the reaction being separated from the aqueous phase and the aqueous phase being extracted with cyclohexanone and then subjected to steam distillation.

REFERENCES:
patent: 3429920 (1969-02-01), De Rooij
patent: 3729304 (1973-04-01), Elmendorp et al.
patent: 3862230 (1975-01-01), De Rooij et al.

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