Abstract: Stable azeotrope-like compositions consisting essentially of 1,1-dichloro-1-fluoroethane, cyclopentane and optionally an alkanol which are useful in a variety of industrial cleaning applications including cold cleaning and defluxing of printed circuit boards.

Abstract: The invention relates to an azeotrope with a minimum boiling point, capable of being employed as a refrigerating fluid replacing trifluorobromomethane (Halon 1301) in industrial refrigeration systems at very low temperature with single-stage compression.The azeotrope according to the invention is a mixture of 1,1,1-trifluoroethane (HFA 143a) and of propane (R290). At the normal boiling point (approximately -53.4.degree. C. at 1.013 bars), its 1,1,1-trifluoroethane content is approximately 70.6 mass % and that of propane 29.4 %.This azeotrope can also be employed as an aerosol propellant or as a blowing agent for plastic foams.

Abstract: Mixtures of the two fluorocarbon compounds 1,1,2,2,3,5,5,5-nonafluoro-4-trifluoromethylpentane and 1,1,1,2,2,5,5,5-octafluoro-4-trifluoromethylpentane with alcohols, ethers, esters, ketones, nitrogen-containing organic compounds, and halogenated hydrocarbons are disclosed; as is a process for cleaning a solid surface which comprises treating the surface with said mixtures. Ternary mixtures of about 88 to 96 weight percent total of said two fluorocarbon compounds with methanol (including at least about 11 weight percent 1,1,1,2,2,3,5,5,5-nonafluoro-4-trifluoromethylpentane and at least about 13 weight percent 1,1,1,2,2,5,5,5-octafluoro-4-trifluoromethylpentane) and with ethanol (including at least about 28 weight percent 1,1,1,2,2,3,5,5,5-nonafluoro-4-triluoformethylpentane and at least about 16 weight percent 1,1,1,2,2,5,5,5-octafluoro-4-trifluoromethyl-pentane) are disclosed as quasiazeotrope compositions that are useful where recovery and reuse of solvents is practiced.

Abstract: The invention relates to an azeotrope-type mixture which contains about 3-5% by weight of methanol and about 95-97% by weight of 1,4-dihydroperfluorobutane, and also to a process for cleaning electronic components, in particular soldered conductor boards or printed circuits, with the aid of said mixture.

Abstract: Mixtures of the compound 1,1,1,2,2,3,5,5,5-nonafluoro-4-trifluoromethylpentane with alcohols, ethers, esters, ketones, nitrogen-containing organic compounds, and halogenated hydrocarbons are disclosed; as is a process for cleaning a solid surface which comprises treating the surface with said mixtures. Binary mixtures of 1,1,1,2,2,3,5,5,5-nonafluoro-4-trifluoromethylpentane with about 5 to 13 weight percent methanol, with about 3 to 11 weight percent ethanol, with about 4 to 12 weight percent isopropanol, with about 52 to 60 weight percent trans-1,2-dichloroethylene, with about 47 to 55 weight percent dichloromethane, with about 1 to 9 weight percent trichloroethane, with about 0.1 to 7 weight percent acetonitrile, and with about 0.

Abstract: Mixtures of the compound 1,1,1,2,2,5,5,5-octafluoro-4-trifluoromethylpentane with alcohols, ethers, esters, ketones, nitrogen-containing organic compounds, and halogenated hydrocarbons are disclosed; as is a process for cleaning a solid surface which comprises treating the surface with said mixtures. Binary mixtures of 1,1,1,2,2,5,5,5-octafluoro-4-trifluoromethylpentane with about 5 to 13 weight percent methanol, with about 2 to 10 weight percent ethanol, with about 3 to 11 weight percent isopropanol, with about 50 to 58 weight percent dichloromethane, and with about 1 to 9 weight percent acetonitrile, are disclosed as azeotrope or azeotrope-like compositions and are particularly suited for use where solvent recovery and reuse is practiced.

Abstract: A quasi-azeotropic stripper composition for the removal of paint or other organic coatings from metallic surfaces and including a formulation containing 1-10% by weight of an alcoholate activator consisting of sodium methoxide, 10-14 20% by weight of a coupling agent and co-solvent consisting of methanol, and 70-89% by weight of an aprotic polar solvent consisting essentially of N-methyl-2-pyrrolidone. The formulation is desirable for use in the work place since it is non-halogenated, is relatively non-volatile under normal ambient conditions, and also possesses a reasonably useful and high flash point.

Abstract: Azeotropic mixtures of 3-chloro-1,1,1-trifluoropropane (HCFC-253fb) with trans-1,2-dichloroethylene (t-HCC-1130) are useful in solvent cleaning applications.

Abstract: Azeotropic mixtures of 2,2-dichloro-1,2-difluoroethane (HCFC-132c) with methanol, ethanol, or trans-1,2-dichloroethylene (t-HCC-1130), the azeotropic mixtures being useful in solvent cleaning applications.

Abstract: The phase of the YBa.sub.2 Cu.sub.3 O.sub.9-.delta. having a perovskite unit cell structure of approximately the following dimensions a=3.8A, b=3.9A, and c=13.55A has been discovered and identified.

Abstract: The physical stability of liquid gel-like automatic dishwasher detergent compositions based on montmorillonite, attapulgite, hectorite or other inorganic colloid-forming clay or other thixotropic thickener is greatly improved by incorporating in the composition small amounts, such as 0.1 or 0.2 weight percent, of aluminum or zinc stearate or other polyvalent metal salt of long chain fatty acid. The aqueous compositions containing inorganic builder salts and other functional inorganic salts, chlorine bleach, bleach-stable detergent, thixotropic thickener and polyvalent metal salt of a fatty acid as a physical stabilizer remain stable against phase separation for periods in excess of six weeks under a wide range of temperatures. The thixotropic properties can be retained or improved using smaller levels of the clay thixotropic thickener than in the absence of the physical stabilizer.

Abstract: Azeotropic mixtures of n-perfluorobutylethylene and cis-1,2-dichloroethylene with methanol or ethanol or isopropanol, the azeotropic mixtures being useful as: cleaning agents, blowing agents, refrigerants, aerosol propellants, heat transfer media and power cycle working fluids.

Abstract: Stable azeotrope-like compositions consisting essentially of 1,1-dichloro-1-fluoroethane, dichloromethane and optionally alkanol which are useful in a variety of industrial cleaning applications and one of which is also useful as a blowing agent in the preparation of polyurethane foams.

Abstract: An azeotrope or azeotrope-like composition of 2,2-dichloro-1,1,1-trifluoroethane (HCFC-123) and methanol, the azeotropic mixture being useful in solvent cleaning application.

Abstract: The azeotropic mixture of 1,1-dichloro-1-fluoroethane and n-perfluorobutylethylene is disclosed. The azeotropic mixture is useful as: a cleaning agent, a blowing agent, a refrigerant, an aerosol propellant, a fire extinguishing agent, a heat transfer medium and a power cycle working fluid.

Abstract: A denture liner composition is provided comprising a methacrylate polymer and/or copolymer in powder form to be wetted by a liquid composition containing dimethacrylate, butyl methacrylate, and long chain methacrylate monomers, the mixture setting upon wetting and being polymerized by visible light and chemical action. A method for using the composition in denture liner formation is also provided.

Abstract: Azeotropic mixtures of n-perfluorobutylethylene and trans-1,2-dichloroethylene with methanol or ethanol or isopropanol are disclosed. The azerotropic mixtures are useful as: cleaning agents, blowing agents, refrigerants, aerosol propellants, heat transfer media and power cycle working fluids.

Abstract: Azeotropic mixtures of hexafluoropropylene/ethylene cyclic dimer with methanol or ethanol, the azeotropic mixtures being useful as: cleaning agents, blowing agents, refrigerants, aerosol propellants, heat transfer media and power cycle working fluids.

Abstract: Stable azeotrope-like compositions of 1,1,2-trichloro-1,2,2-trifluoroethane, nitromethane, 1,2-dichloroethylene and an alkanol which are useful in a variety of industrial cleaning applications.

Abstract: A two part oxidation dyeing method for human hair is provided together with a composition therefor in which both parts are relatively fluid until mixed, after which the combination becomes viscous and can be applied to hair.