Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Patrick E. Brutto1
Bonnie A. Pyzowski1
Charles E. Coburn1
Date of Patent
May 1, 2012
1Patent Application Number
122976751
Date Filed
April 26, 2007
1Patent Primary Examiner
Patent 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.
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