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:
Sep. 17, 1985
Filed:
Aug. 29, 1983
Applicant:
Inventor:
Robert I Davidson, Baton Rouge, LA (US);
Assignee:
Ethyl Corporation, Richmond, VA (US);
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
2604 / ; 2604 / ; 2604 / ; 2604 / ; 2604 / ; 2604 / ;
Abstract
Nitriles, such as 2-(2-fluoro-4-biphenyl)propionitrile, contaminated with ketones having similar boiling points are purified by treating the nitrile/ketone mixture with an alkali metal borohydride, e.g., sodium borohydride, to complex the ketone. After complexing of the ketone, the nitrile can be separated therefrom by distillation.