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WO/1994/020588 |
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...
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WO/1994/020441 |
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...
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WO/1994/020587 |
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...
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WO/1994/019301 |
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 ...
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WO/1994/018282 |
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...
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WO/1994/017019 |
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 ...
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WO/1994/017020 |
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...
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WO/1994/016029 |
Refrigerant compositions are disclosed which include a first component of bis(trifluoromethyl)sulfide, difluoromethyl (trifluoromethyl) sulfide, pentafluoroethyl sulfur pentafluoride, difluoromethyl sulfur pentafluoride or trifluoromethy...
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WO/1994/014736 |
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-...
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WO/1994/014737 |
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.
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WO/1994/013857 |
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...
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WO/1994/013607 |
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 ...
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WO/1994/013609 |
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 +...
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WO/1994/013608 |
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...
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WO/1994/012454 |
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...
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WO/1994/011301 |
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...
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WO/1994/011327 |
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...
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WO/1994/011459 |
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...
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WO/1994/011460 |
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-...
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WO/1994/009625 |
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 ...
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WO/1994/009897 |
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...
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WO/1994/009082 |
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 ...
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WO/1994/007971 |
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...
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WO/1994/006782 |
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...
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WO/1994/006558 |
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...
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WO/1994/006554 |
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...
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WO/1994/005612 |
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 ...
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WO/1994/005611 |
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, ...
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WO/1994/004628 |
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...
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WO/1994/003414 |
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...
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WO/1994/003417 |
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...
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WO/1994/003419 |
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 ...
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WO/1994/003418 |
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...
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WO/1994/002439 |
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...
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WO/1994/002563 |
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...
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WO/1994/002440 |
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.
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WO/1994/001386 |
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�...
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WO/1994/001512 |
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...
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WO/1994/000528 |
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 ...
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WO/1993/025506 |
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...
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WO/1993/025509 |
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...
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WO/1993/025505 |
A process for the co-production of two or more hydrofluoroalkanes which comprises contacting an alkene or a halogenated alkane with hydrogen fluoride at elevated temperature in the presence of a fluorination catalyst to produce a first h...
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WO/1993/025510 |
A process for producing 1,1,1,2,3-pentafluoropropene in a high yield from a readily available 1,1,1,2,3,3-hexafluoropropane industrially at a low cost, which process comprises bringing the gaseous hexafluoropropane into contact with acti...
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WO/1993/025508 |
A process for the production of a hydro(halo)fluorocarbon which comprises contacting an alpha-fluoroether in the vapour phase at an elevated temperature with a catalyst and wherein the catalyst is treated whereby to maintain and/or resto...
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WO/1993/024586 |
This invention relates to compositions that include at least one fluoroether and at least one hydrofluorocarbon. Included in this invention are compositions of a cyclic or acyclic hydrofluoroether of the fomula C¿a?F¿b?H¿2a+2-b?O¿c? ...
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WO/1993/024206 |
Removal of organic compounds from a water stream (3) involves gas stripping in gas stripper (1), followed by membrane separation of the stripping gas containing the organic compound (5) in membrane separator (2). Stripping can be carried...
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WO/1993/024433 |
The present invention relates to a process for the reductive dechlorination of a hydrochlorofluorocarbon having at least one trifluoromethyl group and at least one chlorine in the presence of a catalyst selected from platinum, palladium ...
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WO/1993/023355 |
A method of efficiently separating pentafluorochloroethane from a mixture containing the same and pentafluoroethane, which comprises distilling said mixture to thereby evaporate an azeotropic mixture composed of both the halogenated etha...
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WO/1993/023354 |
1,1,1,4,4,4-hexafluorobutane is prepared from a trifluoroethane compound by reacting the latter with hydrogen in the gaseous phase without solvents on a palladium and/or nickel-containing support catalyst, then by post-hydrating the reac...
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WO/1993/022265 |
A process for the production of bis(fluoromethyl)ether which comprises contacting formaldehyde with hydrogen fluoride in the presence of an essentially water-immiscible solvent for the ether. The bis(fluoromethyl)ether may be converted t...
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