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:
Apr. 22, 1986
Filed:
Mar. 29, 1985
Applicant:
Inventors:
Norman R DeLue, Akron, OH (US);
Stanley R Pickens, Wadsworth, OH (US);
Assignee:
PPG Industries, Inc., Pittsburgh, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C25B / ;
U.S. Cl.
CPC ...
204 74 ;
Abstract
Disclosed is a method of preparing para-aminophenol by the electrolytic reduction of nitrobenzene in an acidic, aqueous reaction medium including a trialkylamine-N-oxide surfactant, such as dimethyldodecylamine-N-oxide, by electrolytic reduction at a cathode comprised of an amalgamated metal, and by electrolytic reduction under essentially anerobic or oxygen-free conditions in the catholyte.