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. 16, 1976
Filed:
Jun. 12, 1974
Applicant:
Inventors:
Helmut Diery, Paris, FR;
Horst Frohlich, Liederbach, Taunus, DT;
Rainer Helwerth, Frankfurt am Main, DT;
Horst Lorke, Oberliederbach, Taunus, DT;
Assignee:
Hoechst Aktiengesellschaft, Frankfurt am Main, DT;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C10M / ;
U.S. Cl.
CPC ...
252 336 ; 72 42 ; 252 475 ; 252 493 ; 252391 ;
Abstract
Aqueous metal working liquids containing a bis-sulfonamidocarboxylic acid of the formula ##SPC1## In the form of its water soluble or water dispersible salt with an alkali or an organic base, as corrosion protection and metal-working agent wherein R.sub.1 denotes hydrogen, halogen, alkyl and/or alkoxy of 1 to 3 carbon atoms, R.sub.2 denotes an alkylene radical having a total of 1 to 5 carbon atoms, and x denotes an integer of from 2 to 6.