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. 19, 2000
Filed:
Feb. 24, 1999
Applicant:
Inventors:
Sven Ivar Hommeltoft, Hiller.o slashed.d, DK;
Gitte Kobbero Mikkelsen, M.ang.l.o slashed.v, DK;
John Zavilla, Kokkedal, DK;
Assignee:
Haldor Topsoe A/S, Lyngby, DK;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
562115 ; 562124 ;
Abstract
A method for hydrolysis of a sulphonic acid ester in a hydrocarbon substrate by aqueous extraction of the hydrocarbon substrate, comprising steps of contacting the hydrocarbon substrate with an aqueous phase containing an ammonia salt, thereby hydrolyzing the sulphonic acid ester to the corresponding sulphonic acid; and recovering the sulphonic acid by separating the aqueous phase from the hydrocarbon substrate.