Glycerol-containing functional fluid
AssigneeChevron Oronite Company LLC
InventorYue-Rong Li
Life of this patent
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Abstract
A functional fluid comprising a major amount of an oil of lubricating viscosity, and at least about 0.05 wt-% glycerol. A method of preparing a functional fluid comprising adding glycerol to a functional fluid, wherein the glycerol is not glycerol monooleate. A method of preparing an additive concentrate comprising adding glycerol to a diluent oil wherein the concentrate contains from about 1% to about 99% by weight of said diluent. A method of reducing wear comprising contacting a metal surface with a functional fluid comprising a major amount of an oil of lubricating viscosity and at least about 0.05 wt-% glycerol.
Claims22
A tractor hydraulic fluid comprising
- a. a major amount of an oil of lubricating viscosity, and
- b. at least about 0.05 wt-% glycerol.
(canceled)
A tractor hydraulic fluid comprising
- a. a major amount of an oil of lubricating viscosity
- b. at least about 0.05 wt % glycerol;
- c. at least about 5.0 wt % of at least one low overbased sulfonate detergent;
- d. at least about 5.0 wt % of at least one high overbased sulfonate detergent;
- e. at least about about 3.0 wt % of at least one medium overbased phenate detergent;
- f. at least about 3.0 wt % of at least one high overbased phenate detergent;
- and
- g. at least about 2.0 wt % of at least one medium overbased carboxylate detergent and
- h. at least one antiwear additive.
(canceled)
(canceled)
A method of reducing friction comprising contacting a metal surface with a tractor hydraulic fluid comprising
- a. a major amount of an oil of lubricating viscosity and
- a. at least about 0.05 wt-% glycerol.
Dependencies are inferred from the claim text.