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:
Jun. 01, 1976
Filed:
Nov. 15, 1974
Applicant:
Inventors:
Lawrence F Kuntschik, Nederland, TX (US);
Orville W Rigdon, Groves, TX (US);
Assignee:
Texaco Inc., New York, NY (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
2605 / ; 260 / ;
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.