Method for working or forming metals in the presence of aqueous lubricants based on methanesulfonic acid
AssigneeArkema France
InventorsGilles Darvaux-Hubert, Fabrice Domingues Dos Santos, François Guillemet
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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.
Claims6
A method for working or forming metals in the presence of an aqueous lubricant wherein the improvement comprises adding a water-soluble extreme pressure additive comprising from about 0.01 to about 20 percent by weight a water-soluble salt of methanesulfonic acid comprising a salt of an alkali or alkaline-earth metal, or of a compound of the formula:
- R1NR2R3
- wherein R1, R2 and R3, are identical or different, each a hydrogen atom, an alkyl, alkenyl or alkylaryl radical with 1 to 22 carbon atoms, or an oxyethylated radical of the form (CH2-CHrO)nH, where n is between 1 and 20 to said aqueous lubricant.
Dependencies are inferred from the claim text.