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. 01, 1988
Filed:
Sep. 29, 1986
Applicant:
Inventor:
Chung-Tsing Liu, Bloomington, MN (US);
Assignee:
Ecolab, Inc., St. Paul, MN (US);
Primary Examiner:
Int. Cl.
CPC ...
C07F / ;
U.S. Cl.
CPC ...
2605 / ; 558 45 ; 2605 / ; 26050115 ; 26050121 ;
Abstract
Phosphinated or phosphonated sulfonic acid compounds are prepared by a process comprising reacting a hypophosphite salt, such as an alkali metal hypophosphite, with an alkenyl sulfonic acid compound of the formula CH.sub.2 .dbd.C(R)C(O)NH--Z--SO.sub.3 --M.sup.+, wherein Z is a divalent (C.sub.1 -C.sub.18)hydrocarbyl group, R is H or (C.sub.1 -C.sub.7)alkyl and M.sup.+ is H.sup.+, NR.sub.4.sup.+ or an equivalent metal cation, such as an alkali metal cation.