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:
Jan. 03, 2006
Filed:
Sep. 17, 2003
Eric James Pressman, East Greenbush, NY (US);
Jonathan Lloyd Male, Schoharie, NY (US);
Ryan Christopher Mills, Mechanicville, NY (US);
John Yaw Ofori, Niskayuna, NY (US);
Eric James Pressman, East Greenbush, NY (US);
Jonathan Lloyd Male, Schoharie, NY (US);
Ryan Christopher Mills, Mechanicville, NY (US);
John Yaw Ofori, Niskayuna, NY (US);
General Electric Company, Niskayuna, NY (US);
Abstract
A method for preparing hydroxyaromatic compounds brominated in the para-position, such as p-bromophenol, is disclosed. The method yields overall high process selectivity through isomeric equilibration and separation of the brominated products, thereby eliminating the need for high para selectivity in the products of catalytic oxybromination reactions of hydroxyaromatic compounds using oxygen, a bromine source, and an acidic medium in the presence of a metal catalyst. Furthermore, the invention provides an efficient method for recycling the metal catalyst, as well as reagents used in the bromination, to further reactions.