Method for working or forming metals in the presence of aqueous lubricants based on methanesulfonic acid
US7730618B2 · kind B2 · utility
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6Claims
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Key dates
| Filing date | Nov 8, 2002 |
| Grant date | Jun 8, 2010 |
| Priority date | — |
| Expiry date | Apr 14, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49616
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A method for working or forming metals which consists in usings an aqueous lubricant containing as water-soluble extreme pressure additive, methanesulphonic acid or water-soluble methanesulphonic acid salt. The water-soluble methane sulphonic acid salt is an alkali or alkaline-earth, ammonium, alkanol amine or ethoxylated fatty amine salt. The inventive aqueous lubricants have good extreme pressure properties and good properties with respect to corrosion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.