Process for the production of cyclohexanone oxime

Details Process for the production of cyclohexanone oxime Process for the production of cyclohexanone oxime

2005-01-18

2005-01-18

Davis, Brian (Department: 1621)

Organic compounds -- part of the class 532-570 series

Organic compounds

Amino nitrogen containing

C564S253000, C564S259000

Reexamination Certificate

active

06844469

ABSTRACT:
The invention relates to a process for the production of cyclohexanone oxime in which a phosphate-containing aqueous reaction medium is cycled from a hydroxylammonium synthesis zone to a cyclohexanone oxime synthesis zone and back to the hydroxylammonium synthesis zone, in which hydroxylammonium synthesis zone hydroxylammonium is formed by catalytic reduction of nitrate with hydrogen, and in which cyclohexanone oxime synthesis zone hydroxylammonium is reacted with cyclohexanone to form cyclohexanone oxime, where the concentration hydroxylammonium in the aqueous reaction medium entering the cyclohexanone oxime synthesis zone is higher than 1.0 mol/l.

REFERENCES:
patent: 3720758 (1973-03-01), Aggenbach et al.
patent: 3862230 (1975-01-01), Elmendorp et al.
patent: 3997607 (1976-12-01), De Rooij et al.
patent: 1 138 750 (1969-01-01), None

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