Disclosed are azeotropic or azeotrope-like compositions containing a hydrofluoroether and a chlorotrifluoropropene. The hydrofluoroether is at least one of methyl nonafluorobutyl ether, ethyl nonafluorobutyl ether, 2,2,2-trifluoroethyl-1,1,2,2-tetrafluoroethyl ether including isomers thereof. The compositions are azeotropic or azeotrope-like and are useful in cleaning applications.

The use of an alcoholic compound to improve the miscibility of ammonia with 2,3,3,3-tetrafluoropropene, as well as to compositions of ammonia, 2,3,3,3-tetrafluoropropene and an alcoholic compound, and the use thereof, in particular in heat-transfer applications. A composition including 2,3,3,3-tetrafluoropropene, ammonia and an alcoholic compound having a melting point less than or equal to 0 C.

Disclosed are azeotropic or azeotrope-like compositions containing Z-1,1,1,4,4,4-hexafluoro-2-butene and methyl perfluoropropyl ether. Also disclosed is process of using the azeotropic or azeotrope-like composition as blowing agents for preparing a thermoplastic or thermoset foam. Also disclosed is a process of using the azeotropic or azeotrope-like composition as a refrigerant for producing cooling or heating. Also disclosed is a process of using such azeotropic or azeotrope-like compositions as solvents. Also disclosed is a process of using the azeotropic or azeotrope-like composition as propellants for producing an aerosol. Also disclosed is a process of using such azeotropic or azeotrope-like compositions as heat transfer media. Also disclosed is a process of extinguishing or suppressing a fire by using such azeotropic or azeotrope-like compositions. Also disclosed is a process of using such azeotropic or azeotrope-like compositions as dielectrics.

The use of an alcoholic compound to improve the miscibility of ammonia with 2,3,3,3-tetrafluoropropene, as well as to compositions of ammonia, 2,3,3,3-tetrafluoropropene and an alcoholic compound, and the use thereof, in particular in heat-transfer applications. A composition including 2,3,3,3-tetrafluoropropene, ammonia and an alcoholic compound having a melting point less than or equal to 0 C.

Disclosed are compositions useful in a wide variety of applications, including heat transfer fluids which possess a highly desirable and unexpectedly superior combination of properties, and heat transfer systems and methods based on these fluids. The preferred heat transfer fluid comprises from about 1 to about 40 percent, on a weight basis, of carbon dioxide (CO.sub.2) and from about 99 to about 60 percent, on a weight basis, of a compound having the Formula I XCF.sub.zR.sub.3-z (I), where X is a C.sub.2 or a C.sub.3 unsaturated, substituted or unsubstituted, alkyl radical, each R is independently Cl, F, Br, I or H, and z is 1 to 3. A preferred compound of Formula I is tetrafluoropropene, particularly 1,1,1,3-tetrafluoropropene and/or 1,1,1,3-tetrafluoropropene.

A non-flammable ternary liquid cleaner is formulated from a first solvent that is a dichloroethylene, a second solvent that is a hydrofluorocarbon and a third solvent that is a fluoroketone having low flammability. The dichloroethylene is present in a concentration of at about 50 percent to about 60 percent by weight of the cleaner, the hydrofluorocarbon is present in a concentration of about 25 percent to about 35 percent by weight of the cleaner and the fluoroketone is present in a concentration of at about 13 percent to about 25 percent by weight of the cleaner.

The present disclosure relates generally to a cleaning solution comprising 2,2,2-trichloroethanol as a solvent (or a co-solvent). The cleaning solvent may further comprise a second co-solvent, water, or both. The cleaning solution may biphasic with a first phase that is water-rich and a second phase that is solvent-rich. The cleaning solvent may contain other components, such as an emulsifying surfactant, a spreading and wetting surfactant, phosphonic acid and an amine. In certain embodiments, a dioxolane or a carbonate may be used as a co-solvent either instead of, or in addition to, 2,2,2-trichloroethanol.