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Matches 701 - 750 out of 6,206

Document Document Title
WO/1997/019903A1
A process for producing chloro-2,2,2-trifluoroethane as a co-product of the production of 1,1,1,2-tetrafluoroethane by hydrofluorination of trichloroethylene which comprises (i) treating the 1,1,1,2-tetrafluoroethane product stream conta...  
WO/1997/016501A1
An azeotrope-like composition comprising: (A) 1,1,1,2-tetrafluoroethane and (B) n-pentane. Also described is a heat transfer device comprising the azeotrope-like composition.  
WO/1997/013719A1
A process for separating and recovering hydrogen fluoride from a mixture with an organic compound especially a fluorine-containing compound by extraction with a solution of an alkali metal fluoride in hydrogen fluoride, phase separation ...  
WO/1997/013737A1
A process for producing 1,1,1,3,3-pentafluoropropane (HFC-245fa) which comprises reacting a halogenated propane represented by the following general formula, such as 1,1,1,3,3-pentachloropropane: CX3CH2CHX2 wherein X represents fluoro (F...  
WO/1997/012852A1
The invention concerns semi-fluorinated alkanes of the general formulae RFRH and RFRHRF, RF being a linear or branched perfluoroalkyl group and RH being a linear or branched saturated (hydrocarbon)-alkyl group.  
WO/1997/011042A1
A method for continuously preparing heptafluoropropane by converting hexafluoropropene with HF in the presence of a liquid hydrofluoride of a nitrogenous organic base of formula [B x nHF], where B is a nitrogenous organic base and n is a...  
WO/1997/011043A1
The present invention provides a vapor phase process for the production of difluoromethane, HFC-32. The process of this invention provides for the preparation of HFC-32 by a process that exhibits both good product yield and selectively.  
WO/1997/010192A1
The present invention provides the novel chlorofluorohydrocarbon 1,1-difluoro-1,4-dichlorobutane, and a process for its preparation by reacting 1,1,1,4-tetrachlorobutane with hydrogen fluoride in the liquid phase. The product has useful ...  
WO/1997/009292A1
A process for the preparation of 4-bromo-1,1-difluorobut-1-ene comprising the step of reacting 2,4-dibromo-1,1,1-trifluorobutane with a defluorobrominating agent in a liquid reaction mass and recovering the desired product therefrom. The...  
WO/1997/008117A1
A process is disclosed for the preparation of a fluorinated aliphatic olefin having the formula: CHaF3-a-CH2-CHbF3-b, wherein a is 0 or the integer 1 or 2 and b is 0 or the integer 1, 2 or 3. In the first step of the process, a chlorinat...  
WO/1997/007052A1
A process is disclosed for recovering HF from a product mixture comprising HF and at least one compound having the formula CF3CCl2+xF1-x (where x is 0 or 1). The process includes the steps of distilling the product mixture to remove all ...  
WO/1997/007083A1
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...  
WO/1997/007084A1
This invention relates to a process for producing 1,1,1,2-tetrafluoroethane (HFC-134a). The process reacts, 1,1,1-trifluoro-2-chloroethane (HCFC-133a) and hydrogen fluoride in a first reactor. The product resulting from the first reactio...  
WO/1997/005090A1
A liquid phase process is disclosed for producing halogenated alkane adducts of the formula: CAR1R2CBR3R4 (where A, B, R1, R2, R3 and R4 are as defined in the specification) which involves contacting a corresponding halogenated alkane, A...  
WO/1997/005089A1
A liquid phase process is disclosed for producing halogenated alkane adducts of the formula: CAR1R2CBR3R4 (where A, B, R1, R2, R3, and R4 are as defined in the specification) which involves contacting a corresponding halogenated alkane, ...  
WO/1997/003936A1
A process is disclosed for removing chloropentafluoroethane (CFC-115) from a mixture comprising CFC-115, difluoromethane (HFC-32), pentafluoroethane (HFC-125), or from mixtures of these compounds, by azeotropic or extractive distillation.  
WO/1997/003036A1
A method for preparing 'alpha','omega'-bromochloroalkanes by hydrochlorinating a cyclic ether optionally mixed with water, and reacting the resulting phase with gaseous hydrobromic acid without prior purification or separation.  
WO/1997/003037A1
A method for preparing 'alpha','omega'-bromochloroalkanes by hydrobrominating a cyclic ether and reacting the resulting phase with thionyl chloride without prior purification or separation.  
WO/1997/002227A1
A process for the Lewis acid catalyzed addition of trifluoromethanes across the carbon-carbon double bond of fluoroolefins is disclosed. A process for isomerization of monohaloperfluoro alkanes is also disclosed.  
WO/1997/002226A1
This invention concerns processes for the preparation of fluoroolefins, including a process for the deiodofluorination of an iodine containing fluorocarbon comprising contacting said iodine containing fluorocarbon with a fluroolefin capa...  
WO/1997/000925A1
Method for thermally decomposing addition polymers, such as polyolefins, into monomers and monomer fragments. Thermal decomposition occurs by the rapid heating of the addition polymer such that the polymer ceiling temperature is reached ...  
WO/1996/040834A1
Compositions comprising a hydrofluoroether or fluoroether of the formula CaFbH2a+2-bOc wherein a = 3 to 6, b = 1 to 14 and c = 1 or 2; an acyclic hydrofluorocarbon or fluorocarbon of the formula CdFeH2d+2-e wherein d = 4 to 6 and e = 1 t...  
WO/1996/040431A1
A catalyst for oxychlorinating ethylene to ethylene dichloride, having copper and potassium absorbed onto an alumina support. The catalyst having a partially hollow cylindrical shape with internal reinforcing vanes, and a diameter in the...  
WO/1996/039368A1
The instant invention relates to azeotropic or azeotrope-like compositions of hydrofluoric acid with at least one of 1,1-dichloroethane, 1-chloro-1-fluoroethane and 1,1-difluoroethane. The invention also relates to manufacturing processe...  
WO/1996/038225A1
A carbon-supported metal hydrodehalogenation catalyst is disclosed which is prepared by impregnating a carbon support having an ash content of less than about 0.2 % by weight (based on the weight of said support) with a combination of me...  
WO/1996/037571A1
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, with the n-butane being at least present in trace amounts ...  
WO/1996/036679A1
Azeotropic or azeotrope-like compositions of effective amounts of 1,1,1,2,3,4,4,5,5,5-decafluoropentane, heptane and an alcohol such as methanol, ethanol, n-propanol or isopropanol, to form an azeotropic or azeotrope-like composition are...  
WO/1996/033153A1
1,1,1,2,3,3-Hexafluoropropane (HFC236ea) or 1,1,1,3,3-pentafluoropropane (HFC245fa) is mixed with (1) at least one nitro compound and (2) at least one member selected among aromatic hydrocarbons and alicyclic unsaturated hydrocarbons, an...  
WO/1996/030294A1
A load swing at a crane is detected with high accuracy by accurately detecting the position of a suspended load through provisions of an imaging means (2) disposed in the vicinity of the top portion of a boom (1) and attitude controlled ...  
WO/1996/030439A1
Azeotropic compositions made up of: a) one compound selected from (1) about 26 to about 88 % by weight perfluorohexane, (2) about 4 to about 50 % by weight 1,3-dioxolane, or (3) about 64 to about 87 % by weight 1,1,1,4,4,4-hexafluorobuta...  
WO/1996/026914A1
A process for preparing 1,1,1,3,3-pentafluoropropane comprising the step (A) of reducing 2,3-dichloro-1,1,1,3,3-pentafluoropropane with hydrogen in the presence of a hydrogenation catalyst under an atmospheric or elevated pressure by a v...  
WO/1996/026171A1
In the oxychlorination of ethylene to produce 1,2-dichloroethane (EDC), in which ethylene, a chlorine source and an oxygen source are reacted in a fixed-bed oxychlorination reactor in the presence of a catalyst, a twin reactor system is ...  
WO/1996/026003A1
The production of 1,2-dichloroethane from ethylene, hydrogen chloride and oxygen or an oxygen-containing gas (oxi-chlorination) is done advantageously in a reactor with a lower boundary for a catalyst-fluidised bed, a first gas inlet duc...  
WO/1996/026185A1
A reagent comprising a compound of formula (I): Rf-M(X)(Z)n-Y-R, wherein R is a hydrocarbon radical advantageously having at most 10 carbon atoms and being selected from alkyls and aryls; Rf is a radical of formula (II): R1-(C'XI'2)m-CF2...  
WO/1996/026172A1
A process for producing HFC-125 and/or HCFC-124 from PCE, characterized by comprising the first reaction step of fluorinating PCE in the presence of a catalyst in a liquid phase to form HCFC-123 and/or HCFC-122 and the second reaction st...  
WO/1996/025379A1
A process for preparing 1,1,1,3,3-pentafluoropropane by reducing 2,3-dichloro-1,1,1,3,3-pentafluoropropane as a raw material with hydrogen in the presence of a catalyst by a vapor-phase process, characterized in that the catalyst is a hy...  
WO/1996/025377A1
A method for simultaneously producing difluoromethane (F32) and 1,1,1,2-tetrafluoroethane (F134a) in gas phase in the absence of any catalyst or metal surface by pyrolysing chlorodifluoromethane (F22) at a temperature above 500 �C in t...  
WO/1996/024569A1
A method for purifying pentafluoroethane (F125) containing chloropentafluoroethane (F115) by liquid-liquid extraction or extractive distillation. Perchloroethylene is used as the extractive agent.  
WO/1996/023752A1
The disclosure relates to separating 1,1,1-trifluoroethane (HFC-143a) from fluorocarbon impurities by using extractive distillation with an extractive agent comprising an alcohol. Examples of suitable extractive agents comprise at least ...  
WO/1996/021355A1
Pesticidal compounds having general formula (I) or a salt thereof is provided, in which n represents an integer from 0 to 4; m represents an integer 0 or 1; each R independently represents a halogen atom or a nitro, cyano, hydroxyl, alky...  
WO/1996/019426A1
A process is disclosed for the catalytic hydrogenolysis of at least one starting material selected from saturated acyclic halofluorocarbons and hydrohalofluorocarbons containing three or four carbon atoms, and from one to five non-fluori...  
WO/1996/019425A1
Tetrafluoroethylene and other valuable 2-carbon atom fluorocarbon is made by reacting fluorine-containing compound such as metal fluoride with CO in an energized state, e.g. plasma excitation, to form a gaseous reaction mixture which is ...  
WO/1996/017683A1
A hydrogenation catalyst of improved activity and selectivity comprising palladium and platinum in a ratio by weight of 2:1 to 500:1 carried on a support such as carbon and a process for the production of hydrofluorocarbon such as difluo...  
WO/1996/017815A1
A process is disclosed for the monohydrogenolysis of 2,2-dichlorohexafluoropropane to 2-chloro-2-hydrohexafluoropropane. The process involves reacting the 2,2-dichlorohexafluoropropane with hydrogen at an elevated temperature of about 15...  
WO/1996/016922A1
A halogenated compound (I) containing one or more >C=O, olefinic and/or aromatic >C=C< groups is hydrogenated for producing a halogenated compound (II) having no or a decreased level of >C=O, olefinic and/or aromatic >C=C< groups. In the...  
WO/1996/016002A1
A method of fluorination by reacting UF6 with a C2 to C8 alcohol, acids, esters, aldehydes or epoxides. The preferred reagent is a monohydroxyl or polyhydroxyl alcohol which does not form a chelate when reacted with UF6. The reaction is ...  
WO/1996/015086A1
The present invention discloses a method and an apparatus for high yield production of 11C-methyl iodide by selectively monohalogenating 11C-methane, whereby the method is comprising a first step of introducing 11CH4 into an apparatus co...  
WO/1996/013476A1
A process for the production of a hydrofluoroalkane, particularly 1,1,1,2-tetrafluoroethane or pentafluoroethane, which comprises contacting a hydrochlorofluoroethane or a hydrochlorofluoroethene with hydrogen fluoride and a fluorination...  
WO/1996/013474A1
The method described calls for primary and secondary alcohols to be reacted with perfluorobutane sulphonyl fluoride, or with higher homologues such as perfluorooctane sulphonyl fluoride, in the presence of 2-3 equivalents of strong organ...  
WO/1996/012693A1
A method for the oxychlorination of ethylene to produce 1,2-dichloroethane comprises reacting ethylene with a chlorine source and an oxygen source in a fixed-bed oxychlorination reactor in the presence of a catalyst, and is characterized...  

Matches 701 - 750 out of 6,206