The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 06, 1977
Filed:
Jun. 28, 1976
Applicant:
Inventors:
Kurt Kahr, Hambach, DT;
Hanns Pohl, Lambsheim, DT;
Guenther Rapp, Ludwigshafen, DT;
Peter Lauz, Annweiler, DT;
Assignee:
BASF Aktiengesellschaft, Ludwigshafen, DT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
2605 / ;
Abstract
The application relates to a process for partial dehydration of cyclohexanone oxime by treatment with an aqueous solution of an inorganic salt, the crude cyclohexanone oxime being extracted at above its melting point countercurrently in an extraction column with a concentrated solution of ammonium or/and hydroxylammonium salt. The salt solution may be used again after concentration. This may be effected by simple evaporation.