DEPARTMENT OF THE NAVY WASHINGTON DC
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The patent application relates to grease compositions suitable for a salt water, high pressure and high shear environment over a wide temperature range. These comprise from 82 to 89 weight percent of an ester-silicone oil base selected from the group consisting of a blend of isodecyl pelargonate, hexadecyl isostearate, and methyl-phenyl silicone, a blend of isodecyl pelargonate, tridecyl azelate, and methyl-phenyl silicone, and a blend of ethylhexyl adipate and methyl-phenyl silicone from 4.9 to 7.5 weight percent of lithium stearate from 2 to 3 weight percent of a rust inhibitor selected from the class consisting of barium and lead dinonylnaphthalene sulfonate from 1.5 to 5 weight percent of antimony dialkylphosphorodithioate from 0.2 to 0.6 weight percent of 2,6-di-tert-butyl-4-methylphenol and from 0.25 to 0.6 weight percent of a copper-silver corrosion inhibitor selected from the class consisting of tolyltriazol, disalicylal-propylenediamine, and 2- mercaptobenzothiazole.
- Lubricants and Hydraulic Fluids