High load-carrying turbo oils containing amine phosphate and thi

Details High load-carrying turbo oils containing amine phosphate and thi High load-carrying turbo oils containing amine phosphate and thi

1997-02-07

1998-08-04

Howard, Jacqueline V.

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

Lubricants or separants for moving solid surfaces and...

Organic nitrogen compound

508436, 508546, C10M13516, C10M13708

Patent

active

057893586

ABSTRACT:
This invention relates to synthetic based turbo oils, preferably polyol ester-based turbo oils which exhibit exceptional load-carrying capacity by use of a synergistic combination of sulfur (S)-based and phosphorous (P)-based load additives. The S-containing additives of the present invention are thiosemicarbazide and its derivative, and the P-containing component is one or more amine phosphates. The turbo oil composition consisting of the dual P/S additives of the present invention achieves an excellent load-carrying capacity, which is better than that obtained when each additive was used alone at a treat rate higher than or comparable to the total combination additive treat rate, and the lower concentration requirement of the P-based additive allows the turbo oil composition to meet U.S. Navy MIL-L-23699 requirement on the Si seal compatibility.

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patent: 5032309 (1991-07-01), Miles
patent: 5354484 (1994-10-01), Schwind et al.
patent: 5391307 (1995-02-01), Yamazaki et al.

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