Molybdenum sulfur antiwear and antioxidant lube additives

US4995996A · kind A · utility

Assignee

• Exxon Research and Engineering Company · US

Inventors

• Catherine L. Coyle · Mendham, US
• Mark A. Greaney · Upper Black Eddy, US
• Edward I. Stiefel · Bound Brook, US
• James N. Francis · Maplewood, US
• Morton Beltzer · Westfield, US

Key dates

• Filing date: Dec 14, 1989
• Grant date: Feb 26, 1991
• Expiry date: Dec 14, 2009

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C10N2070/02
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

In accordance with this invention, there is provided a lubricating composition comprising a major amount of an oil of lubricating viscosity and a minor amount of an additive having the formula Mo.sub.2 L.sub.4 wherein L is a ligand selected from xanthates and mixtures thereof and, in particular, xanthates having a sufficient number of carbon atoms to render the additive soluble in the oil. In general, the xanthate ligand, L, will have form about 2 to 30 carbon atoms.