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:
May. 01, 1990
Filed:
Jun. 20, 1988
Applicant:
Inventor:
Chempolil T Mathew, Randolph, NJ (US);
Assignee:
Allied-Signal Inc., Morris Township, Morris County, NJ (US);
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
564265 ; 564259 ;
Abstract
A process for preparing an aromatic aldoxime, such as benzaldehyde oxime, by reacting the corresponding, .alpha.,.alpha.-dihalide, such as benzal chloride, with a hydroxylamine salt in the presence of an excess of an aqueous base sufficient to maintain the product oxime in solution. Organic impurities may be phase separated from the reaction mixture. Thereafter, the aqueous solution containing product oxime is neutralized to separate an oxime phase, which may be recovered by decanting or solvent extraction.