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:
Oct. 23, 2001
Filed:
Sep. 27, 2000
Applicant:
Inventor:
Mahmood Sabahi, Baton Rouge, LA (US);
Assignee:
Albemarle Corporation, Richmond, VA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 2/200 ;
U.S. Cl.
CPC ...
C07C 2/200 ;
Abstract
Aromatic substrates such as fluorobenzene can be selectively brominated in high yield and conversion in short reaction periods by reacting the substrate with a brominating agent in a liquid reaction medium and in the presence of a catalyst composition formed by including in the medium a combination of (i) a shape selective HY or HM or zeolite catalyst, and (ii) at least one Lewis acid in a ratio of from 0.005 to 0.5 part by weight of (ii) per part by weight of (i). The bromination is performed at one or more temperatures in the range of 30 to 70° C., and the amount of the zeolite is no more than about 10 grams per mole of aromatic substrate.