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:
Nov. 28, 1989
Filed:
May. 14, 1987
Applicant:
Inventors:
Jose Moyne, Caluire, FR;
Camille Disdier, Lyons, FR;
Assignee:
Rhone-Poulenc Chimie de Base, Courbevoie, FR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ; C07C / ;
U.S. Cl.
CPC ...
260402 ; 560142 ;
Abstract
p-Acyloxybenzene sulfonates, well suited for detergency applications, are facilely and rapidly prepared by acylating an alkali or alkaline earth metal, or ammonium p-phenol sulfonate, with an anhydride of a straight or branched chain carboxylic acid having from 7 to 12 carbon atoms, in a polar aprotic solvent and in the presence of a catalytically effective amount of an alkali or alkaline earth metal salt of a straight or branched chain aliphatic carboxylic acid having from 7 to 12 carbon atoms.