Exxon Research and Engineering Company

Chung-Lai Wong

Todd Timothy Nadasdi

Gerald Felsky

A lubricant composition especially useful for saw guide use comprises a base oil composed of at least one synthetic ester and a thickener composed of a styrene-olefin copolymer dissolved in a vegetable oil. The thickener is present in an amount sufficient to provide the lubricant with a viscosity at 40.degree. C. of greater than about 100 cSt.

High viscosity, biodegradable lubricating oil

A sulfur free lubricating composition comprises a major portion of a synthetic base lubricating oil and a minor portion of a tri(alkyl phenyl) phosphate or di(alkylphenyl)phosphoric acid antiwear agent, an amine antioxidant a substituted succinamide rust inhibitor and a tolytriazole. The tri(alkylphenyl)phosphate antiwear agent is incorporated in the oil in an amount ranging between about 0.1 to 2.0 wt % and the amine antioxidant in amount ranging from about 0.1 to 5 wt %. The succinamide is present in an amount ranging from about 0.01 to 0.5 wt % and the tolytriazole, from about 0.01 to 0.5 wt %. In the foregoing, the wt % is based on the weight of oil.

Growing community of inventors

Sarnia, Canada

Chung-Lai Wong