Purification method of cyclohexanone-oxime

Details Purification method of cyclohexanone-oxime Purification method of cyclohexanone-oxime

C - Chemistry, Metallurgy

07

C

C07C 249/14 (2006.01) C07C 249/04 (2006.01) C07C 251/44 (2006.01)

Patent

CA 2391715

The invention relates to a purification method of cyclo-hexanone-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.

L'invention se rapporte à une méthode de purification de cyclohexanone oxime dans une solution de solvants immiscibles à l'eau, qui consiste à laver lesdites solutions avec de l'eau ou une solution aqueuse d'une base de pK <5 ou à passer les solutions de cyclohexanone oxime à travers une résine échangeuse d'ions faiblement alcaline et, éventuellement, à travers une résine échangeuse d'ions faiblement acide.

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