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. 01, 2012
Filed:
Apr. 26, 2007
Patrick E. Brutto, Bloomingdale, IL (US);
Bonnie A. Pyzowski, Park Ridge, IL (US);
Charles E. Coburn, Vernon Hills, IL (US);
Patrick E. Brutto, Bloomingdale, IL (US);
Bonnie A. Pyzowski, Park Ridge, IL (US);
Charles E. Coburn, Vernon Hills, IL (US);
Angus Chemical Company, Buffalo Grove, IL (US);
Abstract
An additive for an aqueous metalworking fluid (MWF) comprises a C12-20 fatty acid neutralized with at least one of an amine, alkanolamine and a caustic. The additive is designed for use in an aqueous MWF having a pH of at least about 7 and comprising at least about 0.10 weight percent, based on the weight of the MWF, of the neutralized C12-20 fatty acid. The additive inhibits the staining of ferrous and nonferrous metals during and after machining.