Hydraulic working oil composition for buffers

Details Hydraulic working oil composition for buffers Hydraulic working oil composition for buffers

1995-02-08

1996-07-16

McAvoy, Ellen M.

Solid anti-friction devices, materials therefor, lubricant or se

Lubricants or separants for moving solid surfaces and...

Organic phosphorus compound, wherein the phosphorus is...

508437, 508253, 508334, 508282, C10M13708, C10M13300

Patent

active

055364233

ABSTRACT:
A hydraulic working oil composition for buffers which comprises:
a lubricating oil as a base oil,
(A) at least one phosphorus-containing compound selected from the group consisting of a phosphoric acid ester having a specific structure, a phosphorous acid ester having a specific structure and a salt of-the phosphoric acid ester and/or the phosphorous acid ester with an aliphatic monoamine having 8-22 carbon atoms, and
(B) at least one nitrogen-containing compound selected from the group consisting of an aliphatic polyamine having a specific structure and a salt of the aliphatic polyamine with an aliphatic acid having 6 carbon atoms, the compounds (A) and (B) being essential components added to said base oil.

REFERENCES:
patent: 3779928 (1973-12-01), Schlicht
patent: 3979308 (1976-09-01), Mead et al.
patent: 4511482 (1985-04-01), Horodysky
patent: 4537694 (1985-08-01), Horodysky
patent: 4847457 (1989-07-01), Wirth et al.
patent: 5342531 (1994-08-01), Walters et al.
patent: 5354484 (1994-10-01), Schwind et al.

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