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Matches 701 - 750 out of 6,118

Document Document Title
WO/1995/019947A1
Hydrofluoroalkanes useful as solvents, especially for vapor degreasing and solvent cleaning, are one or many of the above mentioned formulae.  
WO/1995/018846A1
A mixed gas refrigerant for use as a replacement for CFC refrigerants, and specifically, for R-12, which includes at least three components including R-134a, R-124, and n-butane.  
WO/1995/017364A1
A process for the production of difluoromethane which comprises contacting bis(fluoromethyl)ether in the liquid phase with boron trifluoride under conditions such that the molar ratio of boron trifluoride to bis(fluoromethyl)ether is at ...  
WO/1995/017366A1
A process for purifying 1,1,1,3,3-pentafluoro-2,3-dichloropropane by distilling a mixture containing hydrogen fluoride and 1,1,1,3,3-pentafluoro-2,3-dichloropropane to prepare an azeotropic composition containing 85-95 mole % of hydrogen...  
WO/1995/016654A1
A process for the production of pentafluoroethane which comprises the steps (i) producing a composition comprising a compound of formula C2HClxFy in which x = 1, 2 or 3 and y = 2, 3 or 4 provided that x + y is 5, contaminated with a comp...  
WO/1995/016657A1
The invention is directed to an improved process for the preparation of spirocyclic lactams which utilizes diiodides in the spiro alkylation of lactams N-substituted with a tertiary amine group. The resultant spirocyclic lactams are usef...  
WO/1995/016656A1
The instant invention relates to producing perhalofluorobutanes and perhalofluorohexanes, more particularly it relates to their production by utilizing tetrafluoroethylene (hereinafter referred to as "TFE") and chlorotrifluoro-ethylene (...  
WO/1995/016655A1
The instant invention relates to producing fluorinated propanes and pentanes. More particularly it relates to producing perhalofluoropropanes and pentanes by reacting dihalodifluoromethanes with polyfluoroethylenes, notably tetrafluoroet...  
WO/1995/015937A1
A process for producing difluoromethane and 1,1,1,2-tetrafluoroethane comprising the steps of: (1) reacting methylene chloride and 1,1,2-trichloroethylene with hydrogen fluoride in a first reactor in a gas phase in the presence of a fluo...  
WO/1995/013335A1
Compositions of 2,2-dichloro-1,1,1-trifluoroethane and 1,1,2,2,3-pentafluoropropane, 1,1,2,3,3-pentafluoropropane or 1,1,1,2,3-pentafluoropropane.  
WO/1995/013256A1
1,1,1,3,3-Pentafluoropropane is produced in a high yield at a high selectivity by reducing 3-chloro-1,1,1,3,3-pentafluoropropane with hydrogen in a vapor phase in the presence of a noble metal catalyst.  
WO/1995/013336A1
Compositions of N(CF3)a(CHF2)b(CH2F)c, where a, b and c are integers from 0 to 3 and a+b+c=3, and CnFmH2n+2-m, where n is an integer from 1 to 3 and m is an integer from 1 to 8, are disclosed. Also disclosed are compositions of N(CF3)3 a...  
WO/1995/012564A1
A process for producing CCl2FCF3 substantially free of CC1F2CC1F2 is disclosed. The process includes contacting a feed mixture consisting essentially of C2Cl3F3 where the ratio of CCl2FCClF2 to CCl3CF3 is at least about 1:9 with an isome...  
WO/1995/012565A1
A process for producing a reaction product comprising C2C13F3 substantially free of 1,2-dichlorotetrafluoroethane is disclosed. The process includes contacting a feed mixture consisting essentially of compounds of the formula C2Cl4-xF2+x...  
WO/1995/012563A1
A process for producing difluoromethane is disclosed which includes the step of contacting a gaseous mixture containing CH2Cl2 and hydrogen fluoride with a catalyst containing a catalytically effective amount of trivalent chromium suppor...  
WO/1995/012566A1
A process is disclosed for producing a product comprising CCl2FCF3 substantially free of CClF2CClF2. The process includes (i) contacting a mixture of perhalogenated hydrocarbons which is essentially free of CClF2CClF2 and comprises from ...  
WO/1995/010494A1
The invention relates to a process for producing pentafluoroethane from unsaturated compounds with two carbon atoms substituted by hydrogen and possibly fluorine, especially trifluoroethylene. The process can also be used in a process fo...  
WO/1995/009140A1
The present invention relates to a process for the reduction dechlorination of ClCF2CFClCF2Cl to HCF2CHFCF2H comprising the step of contacting 1,2,3-trichloropentafluoroethane and H2 over a catalyst selected from the group consisting of ...  
WO/1995/008603A1
Compositions include mixtures of trifluoromethane and pentafluoropropane; fluoromethane and pentafluoropropane; tetrafluoroethane and heptafluoropropane or pentafluoropropane; 1,1-difluoroethane and heptafluoropropane, or pentafluoroprop...  
WO/1995/008602A1
A refrigerant composition for use in a vapour-compression refrigeration apparatus as a replacement for currently used refrigerants R22 and R12 comprises a mixture of pentafluoroethane (R125), tetrafluoroethane (R134a), a hydrocarbon sele...  
WO/1995/006625A1
A process for the production of difluoromethane which comprises contacting formaldehyde with hydrogen fluoride in the presence of a catalyst and a chemical dehydrating agent at a temperature below 150 �C. Preferably BF3 is employed as ...  
WO/1995/006693A1
Compositions of 1,1,1,2,3,4,4,5,5,5-decafluoropentane, bis(fluoromethyl) ether, 2,2,4,4-tetrafluorooxetane, 2,2,3,3-tetrafluorooxetane, 1,1,1,2-tetrafluoro-2-(fluoromethoxy)ethane, 1-(difluoromethoxy)-1,2,2-trifluoroethane, 1-(difluorome...  
WO/1995/006021A1
A process is disclosed for separating HF from organics by passing a mixture of HF and organics through a column or bed containing a polymer which sorbs the HF leaving an essentially pure organic stream. The HF may be recovered from the p...  
WO/1995/005429A1
New ternary compositions of trifluoromethane (R23),1,1,1-trifluoroethane (R143a) and chlorodifluoromethane (R22) suitable as refrigerants for the cryogenic temperature range are disclosed. These compositions qualify in particular as suit...  
WO/1995/005353A1
Alternatives to chlorofluorocarbons are provided by the inventive process for synthesizing fluorine-containing products RCFbHc+a-1Hf+d-1FeCR' which may optionally be carried out without the isolation of any intermediate in a single react...  
WO/1995/004021A1
The invention relates to a process for preparing hydrofluorocarbons of the formulas CF3(CH2CF2)nF comprising reacting at least one reactant selected from CCl3(CH2CCl2)nCl, CCl3(CH2CF2)nCl or CCl2[(CH2CF2)Cl]2, where n=1 to 3, with hydrog...  
WO/1995/004022A1
This invention is related to the preparation of hydrofluorocarbons (HFCs). Specifically, it relates to the manufacture of 1,1,1,3,3-pentafluoropropane, CF3CH2CF2H (HFC-245fa) by the steps comprising (1) the formation of CCl3CH2CCl3 by th...  
WO/1995/004020A1
A process for the preparation of perfluoroalkyl iodides, especially perfluoroethyl iodide, by reaction of perfluorinated compounds which contain a carbon carbon double bond with ICl in HF solvent in the presence of Lewis acid catalysts. ...  
WO/1995/003264A1
There is provided a process for the preparation of 1,1,1-trichlorotrifluoroethane in which 1,1-dichloro-2,2,2-trifluoroethane is subjected to chlorination by bringing the 1,1-dichloro-2,2,2-trifluoroethane into contact with chlorine with...  
WO/1995/002652A1
Azeotrope-like compositions comprising trifluoromethane and carbon dioxide or hexafluoroethane and carbon dioxide are stable and have utility as refrigerants for heating and cooling as well as fire extinguishing compositions.  
WO/1994/029252A1
1,1,1,3,3-pentafluoropropane is produced by hydrogenating 2,2,3-trichloro-1,1,1,3,3-pentafluoropropane with at least 4.5 times by equivalent as much hydrogen in the presence of a noble metal catalyst, particularly a palladium catalyst in...  
WO/1994/029249A1
A process for converting the isomers of HCFC-123 to HCFC-123 usint TaF5 and/or Nb5 in the absence of HF.  
WO/1994/029251A1
A process for producing 1,1,1,3,3-pentafluoropropane by reducing 1,1,1,3,3,3-pentafluoropropene with hydrogen in the presence of a palladium catalyst in vapor phase at 40 to 300 �C. A process for producing 1,1,1,3,3-pentafluoropropane ...  
WO/1994/027938A1
This invention relates to a process for producing linear hydrofluorocarbons of the formula: XCF2(CF2)nCH2F, where X is H or F, and n is 1 to 7 when X is H, and n is 0 to 7 when X is F, by a vapor phase catalytic reaction of HF and phosge...  
WO/1994/027940A1
A process is disclosed for producing CF3CHFCH2F using vapor phase catalytic dehydrohalogenation to produce CF3CF=CHF and HF, followed by vapor phase catalytic hydrogenation of CF3CF=CHF in the presence of HF.  
WO/1994/027939A1
Linear hydrofluorocarbons of the formula XCF2(CF2)nCH2F where X is H or F, and n is 1 to 7 when X is H and 0 to 7 when X is F, are produced by a vapor phase catalytic reaction of HF with corresponding compounds of the formula XCF2(CF2)nC...  
WO/1994/027937A1
This invention relates to a liquid phase process for the preparation of RfCHXY by the homogeneous catalytic hydrodechlorination of RfCClXY wherein X and Y are independently H, F, Cl or Rf' provided X and Y are not both Cl, Rf and Rf' are...  
WO/1994/027936A1
This invention relates to a liquid phase process for the preparation of RfCHCl2 by the selective homogeneous catalytic hydrodechlorination of RfCCl3 wherein Rf is F, CF3, (CF2)nCl or (CF2)nCF3 by reacting the compound with hydrogen while...  
WO/1994/026836A1
Azeotrope-like compositions comprising pentafluoroethane and 1,1,1-trifluoroethane are stable and have utility as refrigerants for heating and cooling.  
WO/1994/026837A1
Refrigerant compositions include mixtures of hexafluorodimethyl ether and cyclopropane, dimethylether or propylene; bis(difluoromethyl)ether and 2,2,3,4,4-pentafluorooxetane; fluoromethyl trifluoromethyl ether and 2,2,4,4,5,5-hexafluoro-...  
WO/1994/025418A1
A single step, vapor phase process for the chlorofluorination of methane forms trifluoromethane and/or tetrafluoromethane in high yield. A Cr2O3 catalyst is preferred.  
WO/1994/025419A1
The present invention discloses azeotropic or azeotrope-like compositions which include HCl that can be employed in a distillation or an extractive distillation process for separating HCl from pentafluoroethane, chloropentafluoroethane, ...  
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/1994/022796A1
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/1994/022797A1
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/1994/022794A1
A process for the purification of a perfluorochemical composition comprises continuously mixing the perfluorochemical composition, comprising a liquid mixture of inert perfluorochemicals (e.g., perfluoroalkalenes, perfluoroethers, perflu...  
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/1994/022973A1
This invention relates to compositions of a hexafluoropropane and a hydrofluorocarbon, with the hydrofluorocarbon being hexafluoropropane, pentafluoropropane, tetrafluoropropane, trifluoropropane, difluoropropane, fluoropropane, or (CF3)...  
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/1994/021579A1
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...  

Matches 701 - 750 out of 6,118