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US 6,620,970 B2Granted
Work-up of the ammoximation products of ketones by liquid-liquid extraction in a ternary solvent system
AssigneeDegussa AG
InventorsThomas Schiffer, Peter Ernst Esser, Jörg Krissmann, Martin Roos, Günter Stevermüer, Georg Friedrich Thiele
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Abstract
The present invention relates to a process for working up an ammoximation reaction mixture, by separating a catalyst from the reaction mixture, removing the ketone oxime product, discharging the water of the reaction, and recirculating a solvent, where the ketone oxime formed is removed in a liquid phase with at least one liquid-liquid extraction in a ternary solvent system.
Claims15
A process for working up an ammoximation reaction mixture of a ketone, which comprises
- separating a catalyst from the reaction mixture,
- removing a ketone oxime product with at least one liquid-liquid extraction in a ternary solvent system,
- discharging the water of the reaction, and
- recirculating a solvent in the reaction mixture.
1 more element
Dependencies are inferred from the claim text.