Patent ID: 6511946
Filing Date: 2003-01-28
Classification: C10M,C10N

Abstract:
A water-miscible cooling lubricant concentrate comprising a natural or synthetic mineral oil, an emulsifying agent, a solubilizer, a metal inhibitor and a preservation and corrosion protection agent which comprises:a) at least one component selected from the group consisting of an ethoxylated fatty acid, a propoxylated fatty acid, an ethoxylated fatty acid alkanolamide, a propoxylated fatty acid alkanolamide and a conversion product of boric acid with a primary or tertiary alkanolamine, and b) at least one component selected from the group consisting of a carboxylic acid imide, a phosphoric acid ester, a thiadiazole, an isothiazolinone, an imidazole, a guanidine, an aromatic carboxylic acid, 3-iodo-2-propinyl-carbamate and a methylol urea derivate, wherein when said concentration is diluted to form a 2 to 25% by weight aqueous solution, said aqueous solution has a pH between 7.0 and 7.5.