Lubricant compositions
AssigneeSouthwest Petro-Chem, Inc.
InventorsAndrew L. Johnson, III, Ray D. Lawson, Jon C. Root
Life of this patent
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Abstract
Lubricant compositions adapted for use under extreme pressure conditions comprising a major proportion of a lubricating grease, and a minor proportion of an additive consisting essentially of a solid, oil insoluble arylene sulfide polymer, and a metal salt, particularly an alkali metal or alkaline earth metal salt, particularly an alkali metal or alkaline earth metal salt of a phosphorus acid, for example, mono- or dicalcium phosphate, or an alkali metal or alkaline earth metal carbonate exemplified by calcium carbonate, or a mixture of such a phosphate salt and carbonate.
Claims14
A lubricant composition for use under extreme pressure conditions comprising a major proportion of a lubricating oil base grease and a minor proportion of an additive consisting essentially of a mixture of a solid, high melting point, oil insoluble arylene sulfide polymer and a metal salt selected from the group consisting of metal phosphates and metal carbonates, and mixtures thereof, said additive being present in an amount sufficient to impart extreme pressure properties to the lubricating grease.
Dependencies are inferred from the claim text.