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:
Aug. 20, 1991
Filed:
May. 25, 1990
Applicant:
Inventors:
Bernd Fabry, Korschenbroich, DE;
Hans-Herbert Friese, Monheim, DE;
Friedrich Pieper, Langenfeld, DE;
Guenter Uphues, Monheim, DE;
Assignee:
Henkel Kommanditgesellschaft auf Aktien, Duesseldorf-Holthausen, DE;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07B / ; C07F / ; C07C / ; C07C / ;
U.S. Cl.
CPC ...
558177 ; 558183 ; 558186 ;
Abstract
The invention concerns a process for the manufacture of surface-active sulfophosphoric-acid-(partial)-alkyl-esters and their alkali-, alkaline earth-, ammonium- and amine salts by the sulfonation of phosphoric acid esters and subsequent hydrolysis of the sultone intermediate stages formed.