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:
May. 16, 2006
Filed:
Jan. 16, 2003
Eric James Pressman, East Greenbush, NY (US);
John Yaw Ofori, Niskayuna, NY (US);
Grigorii Lev Soloveichik, Latham, NY (US);
Ryan Christopher Mills, Clifton Park, NY (US);
Jonathan Lloyd Male, Schenectady, NY (US);
Eric James Pressman, East Greenbush, NY (US);
John Yaw Ofori, Niskayuna, NY (US);
Grigorii Lev Soloveichik, Latham, NY (US);
Ryan Christopher Mills, Clifton Park, NY (US);
Jonathan Lloyd Male, Schenectady, NY (US);
General Electric Company, Niskayuna, NY (US);
Abstract
Brominated hydroxyaromatic compounds such as p-bromophenol are prepared by contacting a hydroxyaromatic compound with oxygen and a bromine source such as hydrogen bromide or an alkali metal or alkaline earth metal bromide in an acidic medium, in the presence of elemental copper or a copper compound as catalyst. The brominated product of this reaction may be converted alternately to a dihydroxyaromatic compound such as hydroquinone by hydrolyses, or a dihydroxybiphenyl compound such as 4,4'-dihydroxybiphenyl by reductive coupling.