Storability of molten cyclohexanone oxime

US4931592A · kind A · utility

Assignee

• BASF SE

Inventors

• Hugo Fuchs · Ludwigshafen, DE
• David Agab · Rimbach, DE
• Gerald Neubauer · Weinheim, DE
• Josef Ritz · Ludwigshafen, DE

Key dates

• Filing date: Oct 31, 1989
• Grant date: Jun 5, 1990
• Expiry date: Oct 31, 2009

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C249/14
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The storability of molten cyclohexanone oxime containing 0.5-15% by weight of cyclohexanone and 1-8% by weight of aqueous ammonium bisulfate solution is improved by washing the molten cyclohexanone oxime with a 10-42% strength by weight aqueous ammonium sulfate solution and maintaining a pH of 4.5-5.8.