Purification process for crude n-paraffinone oximes

Details Purification process for crude n-paraffinone oximes Purification process for crude n-paraffinone oximes

C - Chemistry, Metallurgy

07

C

260/612

C07C 131/00 (1980.01)

Patent

CA 1051460

PURIFICATION PROCESS (D#71,963-F) ABSTRACT OF THE DISCLOSURE This invention concerns a process for purifying crude oximes, particularly crude n-paraffinone oximes con- taining carbonyl and/or chlorine contaminants, consisting essentially of treating said crude oximes with urea or thiourea, in the presence of water and lower alkanol, heating to decompose thermally unstable contaminants, filtering off the insoluble urea (or thiourea) carbonyl complexes formed, leaving a purified oxime which can be further purified by conventional purification methods such as vacuum distillation. I

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