The present invention provides a lubricant composition suitable for reducing friction between sliding members such as those within a pump for circulating a heat medium of a heat pump device, and a lubricating system using the composition as a heat medium. A lubricant composition 10 of the present invention comprises: an antifreeze liquid 11 containing ethylene glycol; and 0.01 mass % or less of nanodiamond particles 12. The nanodiamond particles 12 are preferably detonation nanodiamond particles. The lubricant composition 10 is preferably a liquid composition for a heat pump. In addition, the lubricating system of the present invention uses the lubricant composition 10 as a heat medium.

This disclosure provides a process for producing vinylidene dimer derivatives by subjecting one or more vinylidene dimers and one or more carbonyl-containing compounds to a carbonyl-ene reaction, optionally in the presence of a catalyst, to produce one or more vinylidene dimer derived alcohols. This disclosure also provides a process for producing vinylidene dimer derivatives by reacting one or more vinylidene dimers with one or more carbonyl-containing compounds, optionally in the presence of a catalyst, to produce one or more vinylidene dimer derived alcohols. This disclosure further provides vinylidene dimer derivatives (e.g., vinylidene dimer derived alcohols and esters) produced by these processes. This disclosure still further provides for hydrogenating/reacting the vinylidene dimer derived alcohols with acids or anhydrides to produce vinylidene dimer derived esters. This disclosure yet further relates to lubricating ester oil base stocks, and lubricating oils containing the lubricating ester oil base stocks.

This disclosure provides a process for producing vinylidene dimer derivatives by subjecting one or more vinylidene dimers and one or more carbonyl-containing compounds to a carbonyl-ene reaction, optionally in the presence of a catalyst, to produce one or more vinylidene dimer derived alcohols. This disclosure also provides a process for producing vinylidene dimer derivatives by reacting one or more vinylidene dimers with one or more carbonyl-containing compounds, optionally in the presence of a catalyst, to produce one or more vinylidene dimer derived alcohols. This disclosure further provides vinylidene dimer derivatives (e.g., vinylidene dimer derived alcohols and esters) produced by these processes. This disclosure still further provides for hydrogenating/reacting the vinylidene dimer derived alcohols with acids or anhydrides to produce vinylidene dimer derived esters. This disclosure yet further relates to lubricating ester oil base stocks, and lubricating oils containing the lubricating ester oil base stocks.

The mixed composition for a refrigerator of the present invention contains: a refrigerant containing at least one unsaturated fluorinated hydrocarbon compound selected from compounds represented by the following molecular formula (1):
C.sub.pF.sub.rH.sub.s(1)
wherein p represents an integer of from 2 to 6; r represents an integer of from 1 to 11; and s represents an integer of from 1 to 11, provided that the compound has one or more carbon-carbon unsaturated bond in a molecule, and a refrigerator lubricating oil containing, as a major component, a polyol ester (A) of a fatty acid (a1) that is a fatty acid having a number of carbon atoms of from 9 to 16 and has a content of a fatty acid having a number of carbon atoms of 9 of 50% by mol or more based on the total amount of the fatty acid (a1), and a polyol (a2) that is pentaerythritol and/or dipentaerythritol.

The mixed composition for a refrigerator of the present invention contains: a refrigerant containing at least one unsaturated fluorinated hydrocarbon compound selected from compounds represented by the following molecular formula (1):
C.sub.pF.sub.rH.sub.s(1)
wherein p represents an integer of from 2 to 6; r represents an integer of from 1 to 11; and s represents an integer of from 1 to 11, provided that the compound has one or more carbon-carbon unsaturated bond in a molecule, and a refrigerator lubricating oil containing, as a major component, a polyol ester (A) of a fatty acid (a1) that is a fatty acid having a number of carbon atoms of from 9 to 16 and has a content of a fatty acid having a number of carbon atoms of 9 of 50% by mol or more based on the total amount of the fatty acid (a1), and a polyol (a2) that is pentaerythritol and/or dipentaerythritol.

The present invention relates to a functional fluid composition comprising a glycol as a base material and a diamine-based noise reducer. According to the present invention as such, the functional fluid composition comprising a glycol as a base material and a diamine-based noise reducer represented by chemical formula 1 has an excellent noise reducing effect. In addition, the functional fluid composition of the present invention has an excellent metal corrosion inhibiting effect even, by using a diamine-based compound as a noise reducer, when a metal corrosion inhibitor composed of a triazole-based compound without including an amine-based compound is used as a metal corrosion inhibitor.

The present invention relates to a functional fluid composition comprising a glycol as a base material and a diamine-based noise reducer. According to the present invention as such, the functional fluid composition comprising a glycol as a base material and a diamine-based noise reducer represented by chemical formula 1 has an excellent noise reducing effect. In addition, the functional fluid composition of the present invention has an excellent metal corrosion inhibiting effect even, by using a diamine-based compound as a noise reducer, when a metal corrosion inhibitor composed of a triazole-based compound without including an amine-based compound is used as a metal corrosion inhibitor.

The present invention relates to a functional fluid composition comprising a glycol as a base material and a monoamine-based noise reducer. According to the present invention as such, the functional fluid composition comprising a glycol as a base material and a monoamine-based noise reducer represented by chemical formula 1 has an excellent noise reducing effect. In addition, the functional fluid composition of the present invention has an excellent metal corrosion inhibiting effect even, by using a monoamine-based compound as a noise reducer, when a metal corrosion inhibitor composed of a triazole-based compound without including an amine-based compound is used as a metal corrosion inhibitor.

The present invention relates to a functional fluid composition comprising a glycol as a base material and a monoamine-based noise reducer. According to the present invention as such, the functional fluid composition comprising a glycol as a base material and a monoamine-based noise reducer represented by chemical formula 1 has an excellent noise reducing effect. In addition, the functional fluid composition of the present invention has an excellent metal corrosion inhibiting effect even, by using a monoamine-based compound as a noise reducer, when a metal corrosion inhibitor composed of a triazole-based compound without including an amine-based compound is used as a metal corrosion inhibitor.

A single chemical composition comprising to clean and/or lubricate fluid encompassing systems and systems' components comprising of fluid conduit(s), and/or fluid reservoir(s), and/or valve(s), and/or device(s).

Fluid encompassing systems that dispense a fluid or fluids for in vitro and/or in vivo procedures and/or for consumption must be cleaned. A fluid encompassing system and this system's encompassing fluid are both susceptible to contamination

This invention's chemical composition performed routinely cleans the contamination of this system, which also helps maintain the chemical and physical properties for this system's encompassing fluid. This chemical composition also lubricates the surfaces of this system's components. Lubricating this system's components such as valves helps enhance the functioning of said system. This chemical composition also improves this system's fluid flow and helps eliminate odor and foul tasting contaminates from this system.

This chemical composition enhances fluid encompassing systems' operation and efficiency, which helps prolong the life span of these systems and said systems' components.