Antioxidants for functional fluids

Details Antioxidants for functional fluids Antioxidants for functional fluids

1992-12-14

1994-08-09

Howard, Jacqueline V.

Compositions

Electrolytes for electrical devices

252 347, 252 475, 252402, 548127, 548128, 548129, 548130, 548134, 548135, 548136, C10M13536

Patent

active

053364201

ABSTRACT:
An aromatic functional fluid, specifically a monoalkylated tetradecyl diphenyl oxide synthetic lubricant, contains a polymer-supported reaction product of an organic quaternary ammonium salt, derived from a mercapto-heterocycle and a quaternary ammonium salt. To produce the polymer-supported organic quaternary ammonium salt, the salt is reacted with a dicarboxylic acid or anhydride, specifically 2-dodecen-1-ylsuccinic anhydride. An arylamine antioxidant, such as alkylated phenyl naphthylamine, can be added to the polymer supported organic quaternary ammonium salt-treated functional fluid to impart extra antioxidant and stability properties.

REFERENCES:
patent: 4410703 (1983-10-01), Okorodudu
patent: 4584114 (1986-04-01), Gemmill et al.
patent: 4661273 (1987-04-01), Frangatos et al.
patent: 4678592 (1987-07-01), Toukan
patent: 5194167 (1993-03-01), Hsu et al.

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