Patent ID: 6710021
Filing Date: 2004-03-23
Classification: C10M,C10N

Abstract:
A composition for lubricating metallic work pieces comprising:(a) an oil having a viscosity of about 75 cSt to about 90 cSt at 25Â° C.; (b) free sulfur in an amount sufficient to provide lubrication, and (c) a metal corrosion inhibitor to prevent corrosion of said work pieces; wherein said metal corrosion inhibitor is a fatty oil selected from the group consisting of a glyceride, an ester of a carboxylic acid, and combinations thereof, wherein said glyceride is represented by the formula of wherein R1 is a saturated or unsaturated C3 to C24 aliphatic hydrocarbon, and R2 or R3 is hydrogen or wherein R1 is as defined above, and said ester is represented by the formula of wherein R4 is hydrogen or a saturated or unsaturated C3 to C12 aliphatic hydrocarbon, X is 1, 2 or 3, R5 is a saturated or unsaturated C3 to C24 aliphatic hydrocarbon, and R6 is represented by the formula of wherein R5 is as defined above; andwherein said lubrication is demonstrated by a Falex reference load of greater than about 4,500 pounds force and by a Falex reference wear of less than ten teeth and further wherein said composition when maintained at 100Â° C. for 2 hours has a copper strip corrosion classification from about 1a to about 3b.