A lubricant composition is provided that has reduced deposit formation and a low evaporation allowing for improved performance in high temperature applications relative to conventional high temperature lubricants. The high temperature lubricant composition includes a base oil, wherein the base oil includes at least one polyol ester and at least one pyromellitate ester. In some embodiments, the lubricant composition further includes one or more additives selected from the group of an extreme-pressure additive, an anti-wear additive, an anti-rust additive, a corrosion inhibitor, and an antioxidant, or a combination thereof. Further provided are methods for lubricating an apparatus using the lubricant composition, methods for improving the operational lubrication of a conventional high temperature lubricant, and methods of preparing the high temperature lubricant composition of the present invention.

A lubricant composition is provided that has reduced deposit formation and a low evaporation allowing for improved performance in high temperature applications relative to conventional high temperature lubricants. The high temperature lubricant composition includes a base oil, wherein the base oil includes at least one polyol ester and at least one pyromellitate ester. In some embodiments, the lubricant composition further includes one or more additives selected from the group of an extreme-pressure additive, an anti-wear additive, an anti-rust additive, a corrosion inhibitor, and an antioxidant, or a combination thereof. Further provided are methods for lubricating an apparatus using the lubricant composition, methods for improving the operational lubrication of a conventional high temperature lubricant, and methods of preparing the high temperature lubricant composition of the present invention.

The present application relates to a gear lubricant composition comprising: 97 to 99.9 wt.-% trimethylolpropane triester; and 0.1 to 3 wt.-% at least one additive selected from among anti-wear additives, extreme pressure additives, antioxidants, anti-corrosion additives, metal deactivator additives, antifoams, and mixtures thereof.

The present application relates to a gear lubricant composition comprising: 97 to 99.9 wt.-% trimethylolpropane triester; and 0.1 to 3 wt.-% at least one additive selected from among anti-wear additives, extreme pressure additives, antioxidants, anti-corrosion additives, metal deactivator additives, antifoams, and mixtures thereof.

Disclosed is a lubricating oil composition comprising: a lubricating base oil comprising 0.5% to 70% by mass of an ester base oil based on the total amount of the lubricating base oil, and having a kinematic viscosity at 40 C. of 18 to 28 mm.sup.2/s; and an organic molybdenum compound in an amount of 100 to 1000 mass ppm in terms of the molybdenum element based on the total amount of the lubricating oil composition, wherein the lubricating oil composition has a kinematic viscosity at 40 C. of 50 mm.sup.2/s or less.

Disclosed is a lubricating oil composition comprising: a lubricating base oil comprising 0.5% to 70% by mass of an ester base oil based on the total amount of the lubricating base oil, and having a kinematic viscosity at 40 C. of 18 to 28 mm.sup.2/s; and an organic molybdenum compound in an amount of 100 to 1000 mass ppm in terms of the molybdenum element based on the total amount of the lubricating oil composition, wherein the lubricating oil composition has a kinematic viscosity at 40 C. of 50 mm.sup.2/s or less.

A lubricant composition is provided that has reduced deposit formation and a low evaporation allowing for improved performance in high temperature applications relative to conventional high temperature lubricants. The high temperature lubricant composition includes a base oil, wherein the base oil includes at least one polyol ester and at least one pyromellitate ester. In some embodiments, the lubricant composition further includes one or more additives selected from the group of an extreme-pressure additive, an anti-wear additive, an anti-rust additive, a corrosion inhibitor, and an antioxidant, or a combination thereof. Further provided are methods for lubricating an apparatus using the lubricant composition, methods for improving the operational lubrication of a conventional high temperature lubricant, and methods of preparing the high temperature lubricant composition of the present invention.

A lubricant composition is provided that has reduced deposit formation and a low evaporation allowing for improved performance in high temperature applications relative to conventional high temperature lubricants. The high temperature lubricant composition includes a base oil, wherein the base oil includes at least one polyol ester and at least one pyromellitate ester. In some embodiments, the lubricant composition further includes one or more additives selected from the group of an extreme-pressure additive, an anti-wear additive, an anti-rust additive, a corrosion inhibitor, and an antioxidant, or a combination thereof. Further provided are methods for lubricating an apparatus using the lubricant composition, methods for improving the operational lubrication of a conventional high temperature lubricant, and methods of preparing the high temperature lubricant composition of the present invention.

A medical lubricant may comprise a base oil. The medical lubricant can be used on a surgical device.

To provide a composition for a heat cycle system having favorable lubricating properties and comprising a working fluid for heat cycle which has a low global warming potential and which can replace R410A and a heat cycle system employing the composition. A composition for a heat cycle system comprising a working fluid for heat cycle containing trifluoroethylene, and a refrigerant oil (for example, an ester refrigerant oil, an ether refrigerant oil, a polyglycol refrigerant oil or a hydrocarbon refrigerant oil), and a heat cycle system employing the composition for a heat cycle system.