Exxon Research and Engineering Company

George A Clarke, Jr

Gary L Harting

A lubricating grease composition is provided having improved salt water corrosion resistance and comprising a lithium complex grease thickener, a metal naphthenate and a quaternary ammonium salt.

Grease composition resistant to salt water corrosion

A grease composition is provided having improved extreme pressure properties and comprising an additive package of an insoluble phosphorus compound and an oil soluble sulfur compound. The particularly useful insoluble phosphorus compounds include the alkali metal or alkaline earth metal salts of a phosphorus acid while the useful soluble sulfur compounds include sulfurized hydrocarbons and organometallic sulfur salts.

Pressure grease composition

A lubricating grease having an exceptional ability to protect metal bearing surfaces against rusting or corrosion in the presence of salt water contains a synergistic combination of a lithium complex grease thickener, a quaternary ammonium nitrate and an amino imidazoline. The grease thickener is a complex of a lithium soap of a C.sub.12 to C.sub.24 hydroxy fatty acid and a monolithium salt of boric acid, and can include as a third component a lithium salt of a second hydroxycarboxylic acid such as salicyclic acid

Growing community of inventors

Westfield, NJ, United States of America

George A Clarke, Jr