abstract |
An aqueous fluid for the working of metals comprising an aqueous solution of at least one salt of an amido acid of the formula: R-C-NH-CH-(CH2)n-COOH PARALLEL ¦ O(CH2)n'-COOH in which R is a hydrocarbon group, substituted or not by chlorine, and having between 9 and 25 carbon atoms; n and n' are whole numbers or zero, identical or not, whose sum (n + n') is equal to 1 or 2. |