Purification method of Cyclohexanone-oxime
AssigneeEnichem S.p.A.
InventorsMasami Fukao, Francesco Cainelli, Roberto Tessari, Piero Furlan
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Abstract
The invention relates to a purification method of cyclohexanone-oxime in a solution of solvents immiscible with water, which consists in washing said solutions with water or with an aqueous solution of a base having a pK<5 or in passing the solutions of cyclohexanone-oxime through a weakly alkaline ion exchange resin and, optionally, also through a weakly acid ion exchange resin.
Claims12
A purification method of cyclohexanone-oxime in a solution of solvents immiscible with water which consists in washing said solutions with an aqueous solution of a base having a pK<5 or in passing the solutions of cyclohexanone-oxime through a weakly alkaline ion exchange resin and, optionally, also through a weakly acid ion exchange resin.
Dependencies are inferred from the claim text.