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:
Jul. 27, 1999
Filed:
Jul. 09, 1997
Applicant:
Inventor:
John M Forgac, Elmhurst, IL (US);
Assignee:
BP Amoco Corporation, Chicago, IL (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ; C07C / ; C07C / ;
U.S. Cl.
CPC ...
549258 ; 549257 ; 549262 ; 562591 ; 562595 ;
Abstract
The present invention provides a process for recovering fumaric acid formed as a by-product during the production of maleic anhydride so that both fumaric acid and maleic anhydride are obtained. The process of the present invention further eliminates the wasting of MAN that occurs when fumaric acid is incinerated and improves the production of maleic anhydride by eliminating a source of fouling caused by the fumaric acid which leads to down-time in the reaction process to clean out the fumaric acid.