Accession Number : ADD011006

Title :   Perfluorinated Aliphatic Polyalkylether Lubricant with an Additive Composed of an Aromatic Phosphine Substituted with Perfluoroalkylether Groups.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON DC

Personal Author(s) : Snyder,C E , Jr ; Tamborski,C

Report Date : 20 Mar 1984

Pagination or Media Count : 4

Abstract : In accordance with the present invention there is provided a lubricant composition comprising (1) a base fluid consisting essentially of a mixture of linear fluorinated polyethers having the following formula: RfO(CF2CF2O)m(CF2O)nRf wherein Rfis CF3 or C2F5 m and n are integers whose sum is between 2 and 200, and the ratio of m to n is between 0.1 and 10, and (2) a corrosion inhibiting amount of an aromatic phosphine with perfluorinated polyalkylether substituents. It is an object of this invention to provide a lubricant composition which has a relatively constant viscosity over a wide temperature range. Yet another object of this invention is to provide a lubricant composition which undergoes substantially no degradation when exposed to titanium.

Descriptors :   *Patents, *Lubricants, *Formulations(Chemistry), *Phosphine, *Lubricant additives, Engines, Substitution reactions, Fluorination, Alkyl radicals, Ethers, Aromatic compounds, Polymers, High temperature, Corrosion inhibition, Viscosity, Iron alloys, Titanium alloys

Subject Categories : Lubricants and Hydraulic Fluids

Distribution Statement : APPROVED FOR PUBLIC RELEASE