The present invention relates to compositions for use in refrigeration, air-conditioning, and heat pump systems wherein the composition comprises a fluoroolefin 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 cutting work method comprising a cutting work step of forming a through-groove passing through from a surface to a back face of a workpiece material by cutting the workpiece material with a cutting tool while bringing a lubricant material for assisting cutting process into contact with the cutting tool and/or the to-be-processed portion of the workpiece material, wherein the workpiece material comprises one or more materials selected from the group consisting of a metal, a fiber reinforced plastic, ceramic, and a composite material thereof.

The present invention relates to a composition for refrigerator containing a mixed refrigerant, and a refrigerator oil containing a base oil (P), the mixed refrigerant containing a saturated fluorinated hydrocarbon compound (HFC) and an unsaturated fluorinated hydrocarbon compound (HFO), the saturated fluorinated hydrocarbon compound (HFC) containing at least difluoromethane (R32) and 1,1,1,2,2-pentafluoroethane (R125) in the particular amounts, the base oil (P) containing one or more kind selected from the group consisting of a polyvinyl ether (PVE), a polyalkylene glycol (PAG), and a polyol ester (POE), and the base oil (P) having a hydroxy number of 15 mgKOH/g or less.

The present invention relates to an aqueous lubricant composition for the lubrication of a stationary or mobile drive system, comprising at least: deionized water; at least one polyalkylene glycol; at least one antifreeze compound chosen from glycols, and at least one phosphorus compound.

It also relates to the use of this aqueous lubricant composition for the lubrication and cooling of a stationary or mobile drive system.

The present invention relates to a lubricating composition, intended for a refrigerant system comprising a gas compression circuit, comprising:

at least one first polyalkylene glycol exhibiting a hydroxyl number strictly of greater than 50 mg KOH/g and a kinematic viscosity, measured at 100° C. according to the standard ASTM D445, ranging from 5 to 10 mm.sup.2/s, and

at least one second polyalkylene glycol with a kinematic viscosity, measured at 100° C., ranging from 100 to 500 mm.sup.2/s,

said polyalkylene glycols A and B being present in a PAG(s) A/PAG(s) B ratio by weight of between 60/40 and 99/1.

It also relates to the employment of such a lubricating composition in a refrigerant system comprising a gas compression circuit, in particular for an automobile air conditioning system, in combination with a coolant based on hydrocarbon compounds, such as R134a and/or HFO-1234yf.

Phase change material compositions and methods for using the compositions to prepare substrate coatings or bulk blended polymers that advantageously lower friction between interacting substrate surfaces and lower substrate surface wear.

The present disclosure relates to a lubricant composition comprising a lubricant, a first ionic liquid which is soluble in polyalphaolefin and a second ionic liquid which is insoluble in polyalphaolefin. By using the two different ionic liquids, the technical properties of the lubricant compositions can be improved.

A heat transfer process using a composition containing hydro(chloro)fluoroolefins. A heat transfer process that successively includes a step of evaporation of a refrigerant, a step of compression, a step of condensation of said refrigerant at a temperature greater than or equal to 70° C. and a step of expansion of said refrigerant characterized in that the refrigerant includes at least one hydrofluoroolefin having at least four carbon atoms represented by the formula (I) R.sup.1CH═CHR.sup.2 in which R.sup.1 and R.sup.2 independently represent alkyl groups having from 1 to 6 carbon atoms, substituted with at least one fluorine atom, optionally with at least one chlorine atom.

An object of the present disclosure is to provide a composition in which disproportionation of a refrigerant is suppressed, a heat cycle system using the composition, and a method for suppressing a disproportionation reaction of a refrigerant. A composition comprising a refrigerant and a refrigeration oil, the refrigerant comprising at least one refrigerant selected from the group consisting of HFO-1141, HFO-1132(E/Z), HFO-1132a, HFO-1123, and FO-1114, the refrigeration oil having a contact angle with a substrate of 0.1°≤Θ≤90°, the substrate comprising at least one member selected from the group consisting of engineering plastics, organic films, inorganic films, glass, and metals.

An inside air-conditioning device includes a refrigerant circuit (50) and a refrigerant that is sealed in the refrigerant circuit (50). The refrigerant circuit (50) includes a compressor (10), a condenser (25), an electronic expansion valve (13), and an evaporator (17). The refrigerant contains at least 1,2-difluoroethylene.