Purification process

Details Purification process Purification process

1974-11-15

1976-06-01

Gantz, Delbert E.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260 965R, C07C13100

Patent

active

039609553

ABSTRACT:
This invention concerns a process for purifying crude oximes, particularly crude n-paraffinone oximes containing 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.

REFERENCES:
patent: 2569985 (1951-10-01), Fetterly
patent: 2681334 (1954-06-01), Gorin
patent: 3316236 (1967-04-01), Starks et al.
patent: 3534097 (1970-10-01), Williams
patent: 3717623 (1973-02-01), Ruyle

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