Metal processing lubricating oil composition and process for producing the same

A process for producing a metal processing lubricating oil composition, comprising:

• (a) forming a mixture comprising one or more phosphoric esters in the amount of 0.1 weight % or more in phosphorus concentration, orthophosphoric acid in the amount of 0.1 weight % or more in phosphorus concentration and an oil selected from the group consisting of mineral oil, synthetic oil and a mixture thereof;
• (b) heating said mixture to a temperature sufficient to form associations of said phosphoric esters and orthophosphoric acid;
• and
• (c) cooling the resulting composition to room temperature to obtain said metal processing lubricating oil composition.

A process for producing a metal processing lubricating oil composition, comprising:

• (a) forming a mixture comprising one or more phosphoric esters in the amount of 0.1 weight % or more in phosphorus concentration, orthophosphoric acid in the amount of 0.1 weight % or more in phosphorus concentration, an oil selected from the group consisting of mineral oil, synthetic oil and a mixture therof, and one or more metallic phosphates for reducing corrosiveness to ferrous materials in the amount of 0.01 weight % or more in phosphorus concentration;
• (b) heating said mixture to a temperature sufficient to form associations of said phosphoric esters and orthophosphoric acid;
• (c) filtering the resulting composition to remove undissolved metallic phosphates;
• and
• (d) cooling said filtered composition to room temperature to obtain said metal processing lubricating oil composition.