Abstract: A method and apparatus for storing and dispensing in liquid form a blend of fluids which normally fractionate upon boiling. The apparatus includes a container having an internal bladder dividing the container into two chambers. The first chamber contains the liquid blend, and the second chamber contains a pressurizing fluid in sufficient quantity to maintain the pressure on the other side of the bladder in the first chamber above the bubble point pressure of the liquid blend. In this manner, the vapor space above the fluid blend is eliminated, and thus the effect of fractionation caused by vaporization is essentially eliminated during dispensing or leakage of the blend from the package.

Abstract: Evaporative coolants suitable for use as cold spray topical anesthetics containing hydrofluorocarbons and/or hydrochlorofluorocarbons, preferably 1,1,1,3,3-pentafluoropropane, either alone or in combination with other hydrofluorocarbon and/or hydrochlorofluorocarbon components. The invention includes a system for cooling skin using the coolant and a device for spraying the coolant, as well as a method of cooling or topically anesthetizing the skin comprising spraying such evaporative coolants thereon.

Abstract: The invention is directed to sterilant gas compositions of pentafluorodimethyl ether and ethylene oxide which possess improved environmental properties.

Abstract: A compound having the formula 3,3,3-trifluoropropanal oxime, and an improved process for forming 3,3,3-trifluoropropanal and its oxime. The process for producing 3,3,3-trifluoropropanal involves reacting an alkali or alkaline earth metal salt of an alcohol, which alcohol has the formula ROH, where R is a C.sub.1 -C.sub.4 alkyl, with CF.sub.3 CH.dbd.CHCl under conditions sufficient to yield a product mixture comprising at least one of CH.sub.3 CH.dbd.CHOR and CF.sub.3 CH.sub.2 CH(OR).sub.2 ; and then reacting the product mixture of with a C.sub.3 -C.sub.16 alkanoic acid, and heating under conditions sufficient to form 3,3,3-trifluoropropanal. The oxime is prepared by reacting hydroxylamine with 3,3,3-trifluoropropanal under conditions sufficient to produce 3,3,3-trifluoropropanal oxime.

Abstract: A method for separating water from a chemical mixture is provided. In the process of the invention, water is separated from a chemical mixture by contacting the chemical mixture with a water-soluble polymer.

Abstract: The invention relates to the addition of .alpha.-methyl styrene, isobutanol and/or isopropanol to reduce vapor pressure, improve k-factor, enhance the solubility of the blowing agent in the premix and/or improve the processing characteristics of polyurethane and polyisocyanurate closed-cell foams prepared with a blowing agent comprising a hydrofluorocarbon selected from the group consisting of 1,1,1,3,3-pentafluoropropane, 1,1,1,2-tetrafluoroethane, 1,1,2,2-tetrafluoroethane, and mixtures thereof.

Abstract: A process for the catalytic fluorination of hydrochlorocarbons and hydrochlorofluorocarbons in the liquid phase. The process is useful for fluorinating hydrochloropropanes, hydrochlorofluoropropanes, hydrochloropropenes and hydrochlorofluoropropenes and most particularly useful for fluorinating 1,1,1,3,3-pentachloropropane to 1,1,1,3,3-pentafloropropane.

Abstract: Novel trifluoromethylated intermediates are provided which are useful in synthesizing trifluoromethylated organic compounds. Specifically, compounds of the formula CF.sub.3 CR are provided, wherein R is (Cl).dbd.CHCH.sub.2 SO.sub.2 Ph, (Cl).dbd.CHCH.sub.2 CH.sub.2 C(.dbd.O)CH.sub.3, (Cl).dbd.CHCH.sub.2 CH(COCH.sub.3).sub.2, (Cl).dbd.CHCH.sub.2 NR'R" or H.dbd.CHCH.dbd.NR'; R' and R" are the same or different and are selected from the group consisting of hydrogen, unsubstituted or substituted C.sub.1 to C.sub.6 straight chain or branched alkyl, unsubstituted or substituted C.sub.3 to C.sub.7 cycloalkyl, unsubstituted or substituted C.sub.2 to C.sub.12 alkenyl, a benzyl group unsubstituted or substituted with R'", or a phenyl group unsubstituted or substituted with R'"; or R' and R" taken together form a five- or six-membered ring; and R'" is an unsubstituted or substituted C.sub.1 to C.sub.6 straight chain or branched alkyl, an unsubstituted or substituted C.sub.1 to C.sub.

Abstract: The invention relates to novel compositions of 1-bromopropane, nitromethane or acetonitrile and at least one alcohol selected from the group consisting of ethanol, 2-propanol and 2-methyl-2-propanol and more particularly to azeotrope-like compositions based on these compounds which are useful as solvents in refrigeration flushing, oxygen system cleaning and vapor degreasing applications.

Abstract: A compound having the formula: ##STR1## wherein: R is fluorine, hydrogen, an unsubstituted or substituted aliphatic or unsubstituted or substituted aromatic radical;R.sub.1 is an unsubstituted or substituted aliphatic radical, or unsubstituted or substituted aromatic radical; andR.sub.2 is hydrogen, an unsubstituted or substituted aliphatic radical, or unsubstituted or substituted aromatic radical.

Abstract: Provided are azeotropic and azeotrope-like mixtures of 1,1,1,3,3-pentafluoropropane (HFC-245fa) and hydrogen fluoride. Such are useful as an intermediate in the production of HFC-245fa. The latter is useful as a nontoxic, zero ozone depleting fluorocarbon useful as a solvent, blowing agent, refrigerant, cleaning agent, aerosol propellant, heat transfer medium, dielectric, fire extinguishing composition and power cycle working fluid.

Abstract: A method for the preparation of a fluorinated ketone of the formula: ##STR1## where R.sub.1 and R.sub.2 are independently fluorine, alkyl of from about 1 to about 8 carbon atoms, fluoroalkyl of from about 1 to about 8 carbon atoms, or ##STR2## where R.sub.3 and R.sub.4 are independently fluorine, alkyl of from about 1 to about 8 carbon atoms, or fluoroalkyl of from about 1 to about 8 carbon atoms and n is 0 or 1. The method includes heating an anhydride of the formula: ##STR3## with a catalyst including a cationic salt of a fluorocarboxylic acid or an alkali metal fluoride to obtain the fluorinated ketone.

Abstract: The invention provides a method for separating fluorocarbons from mixtures of fluorocarbon and hydrogen fluoride. In particular, the invention provides a method for separating fluorocarbons, such as pentafluoropropane, from azeotropic mixtures of the fluorocarbon and hydrogen fluoride using compositional variations with pressure.

Abstract: The invention provides stabilized hydroxylamine solutions. In particular, stabilized hydroxylamine solutions and processes for their preparation are provided in which the stabilizing compound is cyclohexanediaminetetraacetic acid, hydrochloride salts of thiamine, or mixtures thereof.

Abstract: A process for the preparation of halogenated alkanes is provided. In particular, a process is provided for the highly selective preparation of haloalkanes, including 1,1,1,3,3-pentachloropropane, pentachlorobutane, and hepatchlorohexane, in good yield.

Abstract: The invention provides a process for the separation of azeotropic mixtures of fluorocarbons from hydrogen fluoride. The most preferred fluorocarbon for this invention is 1,1,1,3,3-pentafluoropropane, which is also known as HFC-245fa. The separation in conducted by adding sulfuric acid to the mixture while the mixture is in either the liquid or gaseous states.

Abstract: This invention relates to novel room temperature coalescable aqueous fluoropolymer dispersions and a process for their manufacture. These dispersions may be used in a variety of applications including high temperature thermoplastic coatings, polishes, room temperature formable paints and coatings, extrudable or injection moldable resins, and adhesives.