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. 05, 1994
Filed:
Sep. 16, 1992
Applicant:
Inventors:
David J Tracy, Plainsboro, NJ (US);
Mitchell B Ferguson, Winder, GA (US);
Gordon Wall, Newton, NJ (US);
Assignee:
Rhone-Poulenc Surfactants and Specialties, L.P., Princeton, NJ (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
554 49 ; 554 92 ; 568 31 ;
Abstract
Fatty acid esters of hydroxyalkylsulfonates and fatty acid amides of aminoalkylsulfonates are prepared by heating an excess of the fatty acids with the sulfonate until the water of condensation is removed. The excess fatty acid is removed by distillation and the isolated fatty acid ester or amide product is directly and rapidly cooled to minimize decomposition and color degradation.