| abstract |
The multifunctional aqueous lubricant according to the invention comprises at least one water-soluble salt of dithiodiglycolic acid and at least one water-soluble compound chosen from the group consisting of:a) phosphoric esters of general formula: in which R represents an alkyl, alkenyl or alkylaryl radical having from 6 to 20 carbon atoms, k is equal to 2 or 3, m is a number ranging from 0 to 20 and x is equal to 1 or 2, and their salts, andb) water-soluble salts of alkylthio acids of general formula: in which n is a number ranging from 1 to 10 and R' represents an alkyl, alkenyl or aryl radical having from 6 to 20 carbon atoms, the ratio by mass of dithiodiglycolic acid to compound(s) I and/or II being between 1/1 and 50/1. |