Non-flammable hydraulic fluids

Details Non-flammable hydraulic fluids Non-flammable hydraulic fluids

1985-01-16

1986-06-24

Lieberman, Paul

Compositions

Heat-exchange, low-freezing or pour point, or high boiling...

Organic components

252 33, 252 336, 252 34, 252 39, 252 47, 252 56R, 252 58, 252 77, 252 781, C10M10552, C10M10102, C10M12970, C10M13536

Patent

active

045966648

ABSTRACT:
Non-flammable hydraulic fluids which are particularly useful for replacing existing hydraulic fluids in hydraulic systems employing acrylonitrile-butadiene rubber and fluoroelastomer seals are disclosed. The non-flammable hydraulic fluids of the present invention comprise a fluorinated chlorotrifluoroethylene oil, a refined naphthenic oil, a phenolic antioxidant, a sulfur corrosion inhibitor, a metal deactivator, and an aliphatic ester. The fluorinated chlorotrifluoroethylene oil is present in an amount of at least about 75% by volume of the hydraulic fluid. In addition to being non-flammable, such hydraulic fluids are compatible with both the seals and brass components which contact the hydraulic fluid in hydraulic systems.

REFERENCES:
patent: 2528348 (1950-10-01), Denison, Jr. et al.
patent: 2583588 (1952-01-01), Mosteller
patent: 3468802 (1969-09-01), Nail
patent: 3492233 (1970-01-01), Hepplewhite et al.
patent: 3775319 (1973-11-01), Hartman

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