A composition comprising an orthoester and an organosilane, and in some embodiments, a metal deactivator, antioxidant, lubricant and/or corrosion inhibitor. Also, disclosed is use of the composition for use in increasing thermal conductivity of internal fluids in air conditioning and refrigerant systems.

Heat transfer fluid concentrates include: (a) a freezing point depressant; and (b) a non-ionic surfactant comprising (i) a corrosion inhibitor for copper and copper alloys and (ii) a polyalkylene glycol. A conductivity of the heat transfer fluid concentrate is less than or equal to about 100 S/cm. Ready-to-use heat transfer fluids and methods for preventing corrosion in heat transfer systems are described.

Heat transfer fluid concentrates include: (a) a freezing point depressant; and (b) a non-ionic surfactant comprising (i) a corrosion inhibitor for copper and copper alloys and (ii) a polyalkylene glycol. A conductivity of the heat transfer fluid concentrate is less than or equal to about 100 S/cm. Ready-to-use heat transfer fluids and methods for preventing corrosion in heat transfer systems are described.

The invention relates to a fluid comprising or consisting of glycerol and potassium acetate in a weight ratio interval of 3:2 to 1:6 with a water content of 55-80 w %, wherein the combined weight of glycerol and potassium acetate constitutes 20-45 w %, up to a maximum or total of 100 w %. The inventive fluid is useful as a heat transfer fluid, a deicing fluid or a windscreen washing fluid. A method for producing the inventive fluid is also provided.

The invention relates to a fluid comprising or consisting of glycerol and potassium acetate in a weight ratio interval of 3:2 to 1:6 with a water content of 55-80 w %, wherein the combined weight of glycerol and potassium acetate constitutes 20-45 w %, up to a maximum or total of 100 w %. The inventive fluid is useful as a heat transfer fluid, a deicing fluid or a windscreen washing fluid. A method for producing the inventive fluid is also provided.

Coolants based on alkylene glycols or derivatives thereof are useful for cooling systems in electric vehicles having fuel cells and/or batteries, preferably for motor vehicles, particularly preferably for passenger cars and commercial vehicles (known as light and heavy duty vehicles). The coolants contain additional corrosion inhibitors for improved corrosion protection in addition to specific azole derivatives.

Coolants based on alkylene glycols or derivatives thereof are useful for cooling systems in electric vehicles having fuel cells and/or batteries, preferably for motor vehicles, particularly preferably for passenger cars and commercial vehicles (known as light and heavy duty vehicles). The coolants contain additional corrosion inhibitors for improved corrosion protection in addition to specific azole derivatives.

A lubricating oil composition may include a base oil (A), a neutral phosphorus compound (B), an acidic phosphorus compound (C), a sulfur compound (D) and a metal salt (E) including a metal sulfonate, a metal salicylate, and/or a metal phenate, in which a content of the acidic phosphorus compound (C) in terms of phosphorus atoms is 10 to 180 ppm by mass based on the total amount of the lubricating oil composition, a content of the sulfur compound (D) in terms of sulfur atoms is 10 to 1000 ppm by mass based on the total amount of the lubricating oil composition, and a content of the metal salt (E) in terms of metal atoms is 5 to 180 ppm by mass based on the total amount of the lubricating oil composition.

A heat transfer medium is used for a heat transfer system including a refrigerant cycle device through which a refrigerant circulates and a heat transfer medium circuit having a cooling target device. The heat transfer medium is cooled through heat exchange with the refrigerant and absorbs heat from the cooling target device while circulating through the heat transfer medium circuit. The heat transfer medium includes a carboxylate aqueous solution formed by dissolving carboxylate in water. Accordingly, by using the carboxylate aqueous solution as the heat transfer medium, a low viscosity at a low temperature can be secured. Further, since the carboxylate aqueous solution has a high heat exchange efficiency, the cooling capacity of the heat transfer medium can be improved.

A heat transfer medium for transferring heat from a vehicle driving battery that generates heat during charging and discharging includes a liquid base material, an orthosilicic acid ester compatible with the base material, and an ion adsorbent dispersed in the base material. The ion adsorbent is formed of a plurality of solid particles and adsorbs at least one of anions and cations present in the heat transfer medium.