A process for producing a lubricant from an epoxy-triglyceride comprising treating the epoxy-triglyceride with an esterifying agent in the presence of a heterogeneous catalyst under conditions to produce the lubricant is disclosed.

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 1,2-difluoroethylene, and a refrigerant oil such as an oxygen-containing synthetic oil (such as an ester refrigerant oil or an ether refrigerant oil) or a hydrocarbon refrigerant oil, and a heat cycle system employing the composition for a heat cycle system.

A method for preventing or reducing engine knock or pre-ignition in a high compression spark ignition engine lubricated with a lubricating oil by using as the lubricating oil a formulated oil. The formulated oil has a composition that contains (i) a lubricating oil base stock comprising at least one ester including at least one group selected from the group consisting of Formula (1), Formula (2), and Formula (3):

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The lubricating oils of this disclosure are useful as passenger vehicle engine oil (PVEO) products.

The present invention relates to compositions for use in refrigeration, air-conditioning, and heat pump systems wherein the composition comprises a tetrafluoropropene and at least one other component. The compositions of the present invention are useful in processes for producing cooling or heat, as heat transfer fluids, foam blowing agents, aerosol propellants, and fire suppression and fire extinguishing agents.

The present invention provides a working fluid composition for a refrigerating machine containing: a refrigerating machine oil containing, as a base oil, a mixed ester of (A) a complex ester synthesized from a polyhydric alcohol such as neopentyl glycol, a polybasic acid having 6 to 12 carbon atoms, a monohydric alcohol having 4 to 18 carbon atoms and the like, and (B) a polyol ester synthesized from a polyhydric alcohol such as neopentyl glycol and a monocarboxylic fatty acid having 4 to 18 carbon atoms, in a mass ratio of (A) the complex ester/(B) the polyol ester of 5/95 to 95/5; and a refrigerant such as carbon dioxide.

This thermally conductive grease composition contains a base oil, a thermally conductive filler, and calcium carbonate particles.

This thermally conductive grease composition contains a base oil, a thermally conductive filler, and calcium carbonate particles.

A method for lubricating a work tool, including providing a lubricant composition, the lubricant composition including 72 wt. % to 95 wt. % polyalphaolefin and 5 wt. % to 28 wt. % lithium soap, each in relation to a total weight of the lubricant composition. The method further includes lubricating the work tool with the lubricant composition, the work tool being used to process, package, produce, portion, pick, put together, store, obtain and/or convey foodstuffs, luxury foods, cosmetics, pharmaceuticals and/or feedstuffs. The content of metallocene-catalyzed polyalphaolefin is at least 10 wt. % in relation to the total weight of the lubricant composition, and/or the content of acid-catalyzed polyalphaolefin is at least 10 wt. % in relation to the total weight of the lubricant composition.

A method for lubricating a work tool, including providing a lubricant composition, the lubricant composition including 72 wt. % to 95 wt. % polyalphaolefin and 5 wt. % to 28 wt. % lithium soap, each in relation to a total weight of the lubricant composition. The method further includes lubricating the work tool with the lubricant composition, the work tool being used to process, package, produce, portion, pick, put together, store, obtain and/or convey foodstuffs, luxury foods, cosmetics, pharmaceuticals and/or feedstuffs. The content of metallocene-catalyzed polyalphaolefin is at least 10 wt. % in relation to the total weight of the lubricant composition, and/or the content of acid-catalyzed polyalphaolefin is at least 10 wt. % in relation to the total weight of the lubricant composition.

A lubricating-oil composition for a fluid-dynamic bearing, which is to be used for a fluid-dynamic bearing (8) including radial dynamic pressure generating portions (A1, A2) provided on an inner peripheral surface (Sa) of a porous body, has the following makeup. That is, a base oil having a kinematic viscosity of more than 30 mm.sup.2/s and 80 mm.sup.2/s or less at a temperature of 40 C. is used as a base oil of the lubricating-oil composition, and the makeup of the lubricating-oil composition is adjusted so that the lubricating-oil composition has a kinematic viscosity of 90 mm.sup.2/s or more and 140 mm.sup.2/s or less at a temperature of 40 C.