Patent ID: 8058217
Filing Date: 2011-11-15
Classification: B01J,C10M,C10N

Abstract:
1. An oil for metal working, comprising a triester of fatty acids and glycerin of no less than 45.75% by mass based on a total amount of the oil, wherein the content of oleic acid in the fatty acids is 64-80% by mass and the content of linoleic acid in the fatty acids is 8-20% by mass, based on the total amount of the fatty acids; and wherein the triester has a kinematic viscosity at 40° C. of 5-75 mm a phosphoric acid ester of 2.0-5.0% by mass based on the total amount of the oil; a sulfidizied ester of 3.0-10.0% by mass based on the total amount of the oil; and optionally an antioxidant and/or a sulfonate.