Henry F. Lederle

Fluoroalkylphosphonitrilates: A New Class of Potential Fire-Resistant Hydraulic Fluids and Lubricants. I.

The preparation and preliminary evaluation of a number of trimeric and tetrameric bis (α, α, ω-tri H-polyfluoroalkyl) phosphonitrilates, mixed substituted trimeric and tetrameric (phenyl-α, α, ω-tri H-polyfluoroalkyl) phosphonitrilates, and mixed substituted trimeric and tetrameric (substituted phenyl-α, α, ω-tri H-polyfluoroalkyl) phosphonitrilates is described. Many products have wide liquid ranges with pour points ranging down to —55 F. They also have high compression ignition ratios and relatively high spontaneous ignition temperatures. Good wear, and compatibility with rubber are other favorable properties. In order to obtain hydrolytically stable products, new synthesis and purification methods were developed. The compounds are promising candidates for potential use as fire-resistant hydraulic fluids and lubricants. Contributed by the ASLE Technical Committee on Properties of Lubricants and presented at the Annual Meeting of the American Society of Lubrication Engineers held in Chicago, Illinois May...