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:
Sep. 14, 1993
Filed:
Sep. 11, 1992
Applicant:
Inventors:
Anthony J DeCaria, Murrysville, PA (US);
Alain A Schutz, Penn Township, Westmoreland County, PA (US);
Assignee:
Aristech Chemical Corporation, Pittsburgh, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
568798 ; 568385 ;
Abstract
This invention is an improved two-stage method for producing phenol and acetone from cumene hydroperoxide (CHP) comprising decomposing cumene hydroperoxide in a first stage, and subjecting the product of the first stage to hydrogenation in a second stage; residual cumene hydroperoxide may be decomposed in the second stage, with or without recycling of acetone and/or part of the effluent of the second stage back to the first stage; cumene is also desirably recycled.