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:
Dec. 11, 1990
Filed:
Mar. 04, 1988
Applicant:
Inventors:
Rolf Skold, Stenungsund, SE;
Irene Johansson, Stenungsund, SE;
Assignee:
Berol Kemi AB, Stenungsund, SE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C23F / ; C10M / ; C10M / ;
U.S. Cl.
CPC ...
422-7 ; 422 16 ; 252 493 ; 252 / ;
Abstract
A method for mechanically working cobalt-containing metals is carried out in the presence of a synthetic metal working liquid containing specific tertiary amines which are alkanol amines capable of reducing both the release of cobalt and the corrosion of iron. The alkanol amine compounds contain one or more hydrophobic groups, such as alkyl groups or higher alkylene oxy groups. A concentrate is provided which contains the alkanol amine compounds and which is suitable, after dilution with water, for use in mechanical working.