Lubricating compositions based on perfluoropolyethers
OwnerPatrizia Maccone, Giovanni Boccalettiinventors
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Abstract
Use as additive to stabilize perfluoropolyether lubricant oils at high temperatures, preferably higher than 200° C., of a solid polymer at room temperature, having a softening or a melting point higher than 150° C., preferably higher than 200° C., and containing in the repeating unit at least one aromatic ring; preferably in the backbone, and lubricating compositions containing said additive.
Claims17
Use of a solid polymer at room temperature having a softening or a melting point higher than 150° C., preferably higher than 200° C., and containing in repeating unit at least one aromatic ring, preferably in the backbone, as additive to stabilize fluorinated lubricants, preferably perfluoropolyether oils at high temperatures, preferably higher than 200° C.
Dependencies are inferred from the claim text.