| abstract |
A concentrated lubricant composition for use in metalworking operations, the composition comprising: a neutral trisubstituted phosphate ester of the formula I: PO (OR 1 ) (OR 2 ) (OR 3 ) I wherein R 1 , R 2 and R 3 , which may be the same or different, each represents (a) an aryl group, (b) a substituted aryl group substituted with 1 to 3 alkyl groups, each alkyl group being independently 1 to 6 Contains carbons; or (c) an alkyl group comprising 3 to 18 carbon atoms; optionally a high pressure additive; a surfactant selected from the group consisting of: a) Surfactant, which is not a nonionic alcohol, with an HLB value greater than 12 and b) surfactant having an HLB value of less than 7; a nonionic alcohol having a molecular weight of less than 1000; and Water; in which: the phosphate ester and high pressure additive together make up 5 to 30% by weight of the composition; the surfactant and the nonionic alcohol together 10 to ... |