Metalworking fluids comprising neutralized fatty acids
US8168575B2 · kind B2 · utility
2Cited by
3References
9Claims
0Family size
Assignee
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Key dates
| Filing date | Apr 26, 2007 |
| Grant date | May 1, 2012 |
| Priority date | — |
| Expiry date | Jun 20, 2028 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2070/02
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.