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:
Aug. 07, 2001
Filed:
Sep. 24, 1999
Applicant:
Inventors:
Gary D. Focht, Baton Rouge, LA (US);
W. Dirk Klobucar, Baton Rouge, LA (US);
Assignee:
Albemarble Corporation, Richmond, VA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 5/158 ;
U.S. Cl.
CPC ...
C07C 5/158 ;
Abstract
Meta-bromination with suppression of para-bromination is achieved by forming a reaction mixture comprised of (i) bromine chloride, (ii) a bromination catalyst, and (iii) a benzoyl halide, and maintaining the temperature of the resultant reaction mixture at one or more temperatures above 0° C., but not greater than 30° C. The bromine chloride is preferably formed in situ, most preferably by sparging gaseous chlorine into a mixture of bromine, finely-divided iron, and benzoyl chloride.