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:
May. 17, 1994
Filed:
Nov. 30, 1992
Applicant:
Inventor:
James C Letton, Forest Park, OH (US);
Assignee:
The Procter & Gamble Company, Cincinnati, OH (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C11D / ;
U.S. Cl.
CPC ...
554 98 ; 554 44 ; 554 66 ; 554 68 ; 554 94 ;
Abstract
Polyhydroxy fatty acid amide nonionic surfactants are converted in high yields to their sulfated analog surfactants using an SO.sub.3 /pyridine complex as a sulfating agent. Thus, C.sub.12 -C.sub.18 N-methyl glucamide is sulfated in methylene chloride or pyridine solvent to form the corresponding sulfated glucamide in yields of 80% or higher.