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Matches 851 - 900 out of 6,214

Document Document Title
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/1994/011460A1
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/1994/009625A2
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/1994/006558A1
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/1994/006554A1
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/1994/005612A1
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/1994/005611A1
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/1994/004628A1
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/1994/003414A1
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/1994/003417A1
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/1994/003419A1
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/1994/003418A1
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/1994/002439A1
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/1994/002563A1
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/1994/001386A1
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/1994/001512A1
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/1994/000528A1
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/1993/025506A1
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...  
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/1993/025505A1
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...  
WO/1993/025510A1
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...  
WO/1993/025508A1
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...  
WO/1993/024586A1
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? ...  
WO/1993/024206A1
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...  
WO/1993/024433A1
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 ...  
WO/1993/023355A1
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...  
WO/1993/023354A1
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...  
WO/1993/022265A1
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...  
WO/1993/022476A1
Azeotrope-like compositions comprising 1,1,2,3,3-pentafluoropropane and methanol or ethanol and optionally nitromethane are stable and have utility as degreasing agents and as solvents in a variety of industrial cleaning applications inc...  
WO/1993/021140A1
Hydrogen fluoride can be efficiently removed from a mixture thereof with dichloromethane, chlorofluoromethane and/or difluoromethane either by distilling the mixture to remove a binary azeotropic mixture composed of hydrogen fluoride and...  
WO/1993/020177A1
Azeotropic or azeotrope-like compositions of effective amounts of 1,1,2,2,3,3,4,4-octofluorobutane; trans-1,2-dichloroethylene, cis-1,2-dichloro-ethylene, 1,1-dichloroethane, or 1,3-dichloro-1,2,2,3,3-HCFC-225cb; and an alcohol such as m...  
WO/1993/019845A1
A catalyst for promoting halogen exchange in feedstocks such as 1,1,1-trichloroethane to yield chlorofluorohydrocarbons or chlorofluorocarbons is made by halogenating iron oxide Fe¿3?O¿4? or other non-stoichiometric oxide with SF¿4? t...  
WO/1993/020178A1
Azeotropic or azeotrope-like compositions of effective amounts of 1,1,2,2,3,3,4,4-octofluorobutane and trans-1,2-dichloroethylene; cis-1,2-dichloroethylene; or 1,1-dichloroethane to form an azeotropic or azeotrope-like composition are di...  
WO/1993/019027A1
A process for producing gem-difluoroalkanes more economically than the conventional processes, which process comprises the steps of: (A) mixing crude C3 or C4 alkynes contaminated with polymerizable olefins with fluorinated alkanes boili...  
WO/1993/017988A1
A process is disclosed for purifying a hexafluoroethane product containing CC1F3 and/or CHF3 impurities which comprises the step of contacting the product with a sorbent for said impurities selected from activated carbons and inorganic (...  
WO/1993/016798A1
A chromium-free fluorination catalyst comprising an activity-promoting amount of zinc supported on an alumina, halogenated alumina or aluminium oxyhalide support and use of the catalyst for the production of fluorinated hydrocarbons by r...  
WO/1993/016973A1
A novel compound, 3,3-dichloro-1,1,1,2,2,4,4,5,5,5-decafluoropentane, as a precursor of a substitute for refrigerants and the like; an economical process for continuously producing the compound in high yield and selectivity by reacting t...  
WO/1993/016974A1
Described is a method for the purification of perfluorocarbons, or mixtures of perfluorocarbons, having impurities containing hydrogen and/or carbon-carbon double bonds. The impure perfluorocarbons or perfluorocarbon mixtures are reacted...  
WO/1993/016023A1
A novel compound, 1,1,1,2,2,5,5,5-octafluoropentane, which is promising as a substitute for CFC, HCFC and the like now in use as refrigerant, blowing agent, detergent or solvent; and a process for producing the same economically and indu...  
WO/1993/015162A1
Compositions comprising difluoromethane, 1,1,1,2-tetrafluoroethane and a member selected from the group consisting of 1,1-difluoroethane, 1,1,1-trifluoroethane, propane and dimethyl ether having a vapor pressure from about 12.2 psia to a...  
WO/1993/014052A1
A process for preparing a hydrochlorofluorocarbon essentially free of olefinic impurities by selectively hydrogenating the olefinic impurities. The process may be controlled such that at least a portion of the hydrochlorofluorocarbon is ...  
WO/1993/014175A1
A refrigerant composition comprising a mixture of difluoromethyl trifluoromethyl ether and at least one other fluorine containing compound selected from 1,1,1,2-tetrafluoroethane, fluoromethyl trifluoromethyl ether and bis(difluoromethyl...  
WO/1993/014051A1
A process for industrially producing at least one halogen compound selected from the group consisting of 1,1,1,4,4,4-hexafluoro-2,3-dichlorobutane, 1,1,1,4,4,4-hexafluoro-2-chloro-2-butene, 1,1,1,2,4,4,4-hepta-fluoro-2-butene and 1,1,1,2...  
WO/1993/014174A1
A refrigerant composition comprising a mixture of difluoromethyl trifluoromethyl ether and at least one hydrofluoroalkane selected from difluoromethane, pentafluoroethane and 1,1,1-trifluoroethane is claimed.  
WO/1993/014173A1
A refrigerant composition comprising a mixture of 1,1,1,2-tetrafluoroethane and at least one fluorinated ether selected from trifluoromethyl methyl ether and fluoromethyl trifluoromethyl ether is claimed.  

Matches 851 - 900 out of 6,214