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Matches 851 - 900 out of 6,341

Document Document Title
WO/1994/022796A1
The invention provides a minimum-boiling-point azeotropic binary mixture substantially composed of hydrogen fluoride (HF) and 1,1-difluoroethane (HFC-152a). Also provided is a process for producing HFC-152a comprising the steps of distil...  
WO/1994/023008A1
Azeotropic compositions include a perfluorinated alkane or alkene and an organic solvent, selected from the group consisting of hydrofluorocarbons, hydrochlorofluorocarbons, siloxanes, ethers, 2, 3-dimethyl butane, 2, 3-dimethyl pentane ...  
WO/1994/022797A1
The invention provides a minimum-boiling-point azeotropic binary mixture substantially composed of hydrogen fluoride (HF) and pentafluoroethane (HFC-125). Also provided is a process for producing HFC-125 comprising the steps of distillin...  
WO/1994/022793A1
Separation of CC1F2CF3 from CHF2CF3 is effectively achieved using either acidic inorganic molecular sieves, non-acidic silicate molecular sieves, or activated carbon.  
WO/1994/021579A1
A process for the production of difluoromethane comprising (a) contacting dichloromethane with hydrogen fluoride in the presence of a fluorination catalyst to produce a product stream comprising difluoromethane, monochloromonofluorometha...  
WO/1994/021745A1
Azeotrope-like compositions of 1,1,1,2,3,3,3-heptafluoropropane and 1,1-difluoroethane useful as aerosol propellants and blowing agents for plastic foams, heat transfer media, fire suppression agents, gaseous dielectrics or blowing agent...  
WO/1994/021580A1
A process for the production of difluoromethane comprising contacting dichloromethane with hydrogen fluoride in the presence of a fluorination catalyst comprising zinc or a compound of zinc and a metal oxide, fluoride or oxyfluoride.  
WO/1994/021714A1
A fluororesin molding which is made from a fluororesin composition comprising 0.1 to 30 % by weight of a carbonaceous material and is fluorinated on the surface. The molding is produced by molding a fluororesin composition comprising 0.1...  
WO/1994/020588A1
A new set of effective, environmentally safe, nonflammable, low-toxicity refrigerants, solvents, foam blowing agents, propellants, and firefighting agents is disclosed. The agents are clean, electrically nonconductive, and have short atm...  
WO/1994/020587A1
Compositions include compositions of hexafluoropropane and butane, cyclopropane, isobutane, propane or dimethyl ether, including mixtures of 1,1,2,2,3,3-hexafluoropropane and butane, cyclopropane, isobutane or propane; 1,1,1,2,2,3-hexafl...  
WO/1994/020441A1
A process for producing HFC-125 by dividing the reaction system into a first reaction zone for the vapor-phase reaction of mainly perchloroethylene with HF in the presence of a catalyst and a second reaction zone for the vapor-phase reac...  
WO/1994/019301A1
The invention generally relates to a process for the purification of a component of a binary azeotrope in which the composition of the azeotrope changes by about 10 mole percent with pressure comprising: a) subjecting a binary azeotrope ...  
WO/1994/018282A1
This invention relates to compositions that include at least one hydrocarbon and at least one fluorinated species. Such compositions may be used as refrigerants, cleaning agents, expansion agents for foams such as polyolefins and polyure...  
WO/1994/017020A1
A process for producing 1,1,1,4,4,4-hexafluoro-2-butenes comprising a mixture of 1,1,1,4,4,4-hexafluoro-2,3-dichloro-2-butene, 1,1,1,4,4,4-hexafluoro-2-chloro-2-butene and 1,1,1,4,4,4-hexafluoro-2-butene by the reaction of at least one m...  
WO/1994/017019A1
By using the catalyst components sodium chloride and iron-(III)-chloride in a molar ratio below 0.5 during the reaction of ethylene with chlorine into 1,2-dichlorethane (EDC), high-purity EDC is obtained, which may be directly converted ...  
WO/1994/016029A1
Refrigerant compositions are disclosed which include a first component of bis(trifluoromethyl)sulfide, difluoromethyl (trifluoromethyl) sulfide, pentafluoroethyl sulfur pentafluoride, difluoromethyl sulfur pentafluoride or trifluoromethy...  
WO1994009625A3  
WO/1994/014737A1
A process for producing 1,1,2,2,3-pentafluoropropane in a high yield industrially and economically by reacting 1-chloro-2,2,3,3-tetrafluoropropane with hydrogen fluoride in the presence of a fluorination catalyst.  
WO/1994/014736A1
A process for producing 1,1,1,3,3-pentafluoropropane by the reaction of 1,1,1,3,3-pentafluoro-2,3-dichloropropane with hydrogen fluoride in the presence of a noble metal catalyst; a process for producing 1,1,1,3,3-pentafluoro-2-halogeno-...  
WO/1994/013607A1
A more efficient reaction mechanism is provided for producing 1,1-dichloro-1-fluoroethane (HCFC-141b) by reacting vinylidene chloride with hydrogen fluoride in the liquid phase in the presence of a catalyst and sulfone based or nitrated ...  
WO/1994/013609A1
The fluorine content of an acyclic saturated compound of the formula CnFaXbHc (wherein each X is independently selected from the group consisting of C1 and Br, and wherein n is 1 to 6, a is 1 to 13, b is 0 to 12, c is 1 to 9, and a + b +...  
WO/1994/013608A1
The fluorine content of an acyclic saturated compound of the formula CnFaXb having at least one carbon with at least two fluorine substituents (wherein each X is independently selected from C1 and Br, and wherein n is 1 to 4, a is 2 to 1...  
WO/1994/013857A1
A process for the production of a compound of the formula: R-On-(R1)m-CHF2 wherein R is hydrogen or a fluorine containing C1-4 alkyl group, R1 is an optionally fluorinated methylene group, and m and n are independently 0 or 1 provided th...  
WO/1994/012454A1
1,1,1-Trifluoro-2,2-dichloroethane is reacted with metallic copper and an amine to give 1,1,1,4,4,4-hexafluoro-2-butene, which is further reacted with hydrogen to give 1,1,1,4,4,4-hexafluorobutane. This process facilitates the production...  
WO/1994/011327A1
A chlorofluorination process is disclosed which employs a catalyst comprising chromium oxide for producing halohydrocarbons of the formula CHXFCF3 (where X is selected from Cl and F). The process is characterized by feeding a combination...  
WO/1994/011301A1
Carbon fluoride particles wherein the number-average particle diameter is 0.01-50 mum, the content of particles having such diameters that the particle size distribution thereof falls within the range from the number-average particle dia...  
WO/1994/011460A1
Refrigerant compositions include mixtures of 1,1,2-trifluoroethane and a second component wherein the second component is (CF3)2NF, (CF3)3N, N(CHF2)2(CF3), N(CH2F)(CF3)2, SF5CF2H, SF5C2F5, HFC-236ca, HFC-236cb, HFC-236ea, HFC-254cb, HFC-...  
WO/1994/011459A1
The invention relates to azeotrope-like compositions of difluoromethane, pentafluoroethane and 1,1,1-trifluoroethane which are useful as refrigerants for heating and cooling applications and as blowing agents for the preparation of therm...  
WO/1994/009625A2
Storage stable fluorocarbon emulsions having a continuous aqueous phase and a discontinuous fluorocarbon phase, in which the fluorocarbon phase comprises a major amount of a first fluorocarbon or fluorocarbon mixture, and a minor amount ...  
WO/1994/009897A1
Lower monobasic or dibasic alcohols are produced by the following steps: a) reacting a starting material with a metallic halide (wherein the metal is in the higher of two possible valence states) to obtain a reaction product, a correspon...  
WO/1994/009082A1
Substantially constant boiling compositions that are mixtures of difluoromethane and propane that are useful as refrigerants, aerosol propellants, heat transfer media, gaseous dielectrics, fire extinguishing agents, and expansion agents ...  
WO/1994/007971A1
Constant boiling azeotropic or azeotrope-like compositions of ammonia and 1,1,1,2-tetrafluoroethane, 1,1,2,2-tetrafluoroethane, difluoromethane, pentafluoroethane or 1,1,1,2,3,3,3-heptafluoropropane are disclosed that are useful as refri...  
WO/1994/006782A1
The invention provides novel compounds of formula (I) having nematicidal, insecticidal, acaricidal and fungicidal properties, compositions comprising them and processes and intermediates for their preparation, wherein X is oxygen or sulp...  
WO/1994/006554A1
Process is disclosed for preparing a highly fluorinated alkane by contacting halogenated alkenes or alkanes with hydrogen fluoride in the presence of a catalyst which produces a super acid environment. Also, performing the fluorination p...  
WO/1994/006558A1
A process for the removal of fluoride from a spent chromium-based fluorination catalyst by contacting the catalyst with potassium hydroxide to produce a suspension of solid hydrated chromium oxide in aqeuous potassium fluoride. The solid...  
WO/1994/005611A1
A process for producing 1,1,1,2,3,3-hexafluoropropane which comprises dechlorofluorinating 1,1,2,2-pentafluoro-3,3-dichloropropane and/or 1,1,2,2,3-pentafluoro-1,3-dichloropropane with hydrogen in the presence of a metal oxide catalyst, ...  
WO/1994/005612A1
A process for producing 1,1,1,2,3-pentafluoropropane which comprises hydrogenating 1,2,3,3,3-pentafluoro-1-chloropropene with hydrogen in vapor phase in the presence of a noble metal catalyst. This process serves to produce readily at a ...  
WO/1994/004628A1
The invention relates to azeotrope-like compositions of difluoromethane and 1,1,1-trifluoroethane which are useful as refrigerants for heating and cooling applications and as blowing agents for the preparation of thermal plastic foam and...  
WO/1994/003419A1
A process is disclosed for separating components of an azeotropic or azeotrope-like mixture containing only organic compounds at least one of which compound is a halocarbon comprising contacting said azeotropic or azeotrope-like mixture ...  
WO/1994/003414A1
A fluorinating reagent represented by general formula (I), and a method of fluorinating an alcoholic hydroxyl group with the same, wherein R represents C1-C5 alkyl or dialkylamino having C1-C3 alkyl groups. The starting material of the r...  
WO/1994/003418A1
A process for the preparation of 1,1,1-trichlorotrifluoroethane in which 1-chloro-2,2,2-trifluoroethane is subjected to chlorination by bringing the 1-chloro-2,2,2-trifluoroethane into contact with chlorine within a reaction vessel chara...  
WO/1994/003417A1
A process is disclosed for producing CCl3CF3 by catalytic isomerization. The process comprises (1) activating a micropulverized anhydrous aluminum trichloride which has a surface area of greater than 0.8 m2/g by treating it with at least...  
WO/1994/002563A1
Refrigerant compositions include mixtures of 1,1,2,2-tetrafluoroethane and a second component wherein the second component is 1,1,12,2,3,3-heptafluoropropane, 1,1,1,2,2-pentafluoropropane, tris(trifluoromethyl)amine, cyclopropane, perflu...  
WO/1994/002440A1
Separation of CF3CH2F and CHF2CHF2 from a mixture thereof is effectively achieved using either inorganic molecular sieves having suitable intermediate electronegativities (compared to Zeolite Na-X) or activated carbon.  
WO/1994/002439A1
Process for the removal of chlorine-containing impurities, for example chloropentafluoroethane, and/or hydrofluoroalkane impurities, for example 1,1,1,2-tetrafluoroethane, from pentafluoroethane which comprises contacting the impure pent...  
WO/1994/001512A1
Azeotropic or azeotrope-like compositions comprise admixtures of effective amounts of perfluoroethane and trifluoromethane, or nitrous oxide, or carbon dioxide, or fluoromethane to form an azeotropic or azeotrope-like composition. Such c...  
WO/1994/001386A1
A process for the removal of 1,1,2,2-tetrafluoroethane from 1,1,1,2-tetrafluoroethane which comprises contacting 1,1,1,2-tetrafluoroethane containing 1,1,2,2-tetrafluoroethane with a zeolite having a mean pore size in the range of 3.8�...  
WO/1994/000528A1
Azeotropic compositions of 5-45 weight percent pentafluoroethane and 55-95 weight percent 1,1,1-trifluoroethane boil at -16.9 �C and a pressure of about 51 psia. These compositions are useful as refrigerants, aerosol propellants, heat ...  
WO/1993/025509A1
A process for the production of hydrofluorocarbons, in particular hydrofluoroalkanes such as difluoromethane, which comprises contacting an alpha-fluoro-ether, in particular a fluorinated dialkyl ether such as bis(fluoromethyl)ether in t...  
WO/1993/025506A1
A process for the production of tetrafluoroethanes which comprises contacting 1,1,2,2-tetrachloroethane with hydrogen fluoride over a fluorination catalyst/agent in the liquid phase or in the vapour phase at 200 °C to 400 °C. 1,1,2,2-t...  

Matches 851 - 900 out of 6,341