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:
Feb. 15, 1983
Filed:
Jan. 23, 1981
Applicant:
Inventors:
James T Kao, Baton Rouge, LA (US);
Wayne D Jensen, Baton Rouge, LA (US);
Assignee:
Ethyl Corporation, Richmond, VA (US);
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
548527 ; 548539 ;
Abstract
A process for preparing 5-aroylpyrrole compounds and recovering them from crude solutions by extracting with a mixed organic extractant such as an aromatic hydrocarbon-alkanol mixture followed by aqueous extraction with a base, decolorizing, and recovering the 5-aroylpyrrole compound for final purification.