C - Chemistry – Metallurgy – 10 – M
Patent
C - Chemistry, Metallurgy
10
M
C10M 105/64 (2006.01) C10M 105/42 (2006.01) C10M 105/44 (2006.01) C10M 133/12 (2006.01) C10M 141/06 (2006.01)
Patent
CA 2403540
The present invention relates to a turbine oil composition exhibiting enhanced antioxidancy and thermal stability, and to a method far achieving that result in turbine oils. The gas turbine lubricating oil of the present invention comprises a major portion of an aliphatic ester base oil having lubrication properties and formed by the reaction of pentaerythritol and an organic monocarboxylic acid. The turbine oil further comprises arylamine antioxidants. Two commonly deployed arylamines are substituted diphenylamines (DPA) and phenyl-alpha-naphthylamine (PANA) that may also be substituted. This invention discloses a synergistic combination of an arylamine antioxidant formulation comprising a DPA, a PANA, and an oligomeric antioxidant formed by the reaction of DPAs and PANAs.
Berlowitz Paul J.
Fyfe Kim E.
Godici Patrick E.
Kim Jeenok T.
Bp Corporation North America Inc.
Gowling Lafleur Henderson Llp
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