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Matches 851 - 900 out of 6,746

Document Document Title
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...  
WO/1996/010060A1
The invention includes compositions of 1,2,2,3,3,4,4,4-octafluorobutane and bis(fluoromethyl) ether, 2,2,4,4-tetrafluorooxetane, 2,2,3,3-tetrafluorooxetane, 1-difluoromethoxy-1,1,2,2-tetrafluoroethane, 1-difluoromethoxy-1,2,2,2-tetrafluo...  
WO/1996/010061A1
The present invention includes compositions of octafluorobutane and a compound of the formula CaFbH2a+2-b, where a = 3 or 4 and b = 1 to 8 are disclosed. These compositions, which may be azeotropic or azeotrope-like, may be used as refri...  
WO/1996/010002A1
A process is disclosed for the manufacture of product compounds of the formula HC(R1)2C(R1)2C(R2)2H wherein each R1 is independently selected from the group consisting of H, F, Cl, CN, R, OR, CO2R, C(O)R, OC(O)R, Rf, ORf, CO2Rf, C(O)Rf a...  
WO/1996/010062A1
Compositions include compositions of 1,1,2,2,3,3,4,4-octafluorobutane and a hydrocarbon having from 3 to 7 carbon atoms. Specific examples include 1,1,2,2,3,3,4,4-octafluorobutane and butane, cyclopropane, isobutane, propane, cyclopentan...  
WO/1996/009271A1
The disclosure relates to removing impurities from hexafluoroethane (CF3CF3), also known as Perfluorocarbon 116 (PFC-116) or Fluorocarbon 116 (FC-116), by using azeotropic distillation such that an overhead product consisting essentially...  
WO/1996/007626A1
A process is provided for the chlorination of aliphatic hydrocarbons containing 1 to 4 carbon atoms using hydrogen chloride as the source of chlorine. The process comprises reaction steps operated in tandem in separate zones. First, an u...  
WO/1996/006062A1
Process for the manufacture of pentafluoroethane [HFC 125] by reaction of perchloroethylene with hydrogen fluoride in the vapour phase over a fluorination catalyst in a fluorination reactor with recycle of dichlorotrifluoroethane [HCFC 1...  
WO/1996/005158A1
Object: to provide a method of efficiently separating pentafluoroethane (HFC-125) from a mixture thereof with chloropentafluoroethane (CFC-115). Constitution: a process for forming HFC-125 in a high concentration by the extractive distil...  
WO/1996/004226A1
A method of purifying pentafluoroethane which comprises the step (A) of conducting a catalytic vapor-phase reaction of a non purified mixture (1) containing at least chloropentafluoroethane (CFC-115) and pentafluoroethane (HFC-125) with ...  
WO/1996/004227A1
A process is disclosed for producing 1,1,1,3,3,3-hexafluoropropane with high selectivity. 1,1,1,3,3,3-hexachloropropane is contacted with hydrogen fluoride in the vapor phase at a temperature of from about 200 �C to 400 �C in the pre...  
WO/1996/003358A1
Halogenated compounds are prepared by ring opening reactions of highly fluorinated cyclopropanes with chlorine, bromine, iodine, or mixtures thereof at temperatures over 100 �C. A novel compound, which is one type of compound produced,...  
WO/1996/003361A1
The invention concerns a process for preparing 1,2-dichloroethane (EDC) by feeding chlorine and ethylene into circulated EDC which contains a catalyst. A partial stream of the reaction mixture is fed to a flash vaporization system and th...  
WO/1996/003473A1
A composition for use in a heat transfer device such as a refrigeration or air conditioning system is described which comprises: (A) at least one hydrofluorocarbon selected from the group consisting of difluoromethane (R-32) and 1,1,1-tr...  
WO/1996/002481A1
Phase transfer catalysis (PTC) uses a catalyst comprising a synthetic porous inorganic crystalline material which contains a cation of an onium compound, e.g. cetyltrimethylammonium, within the pores of said material. The crystalline mat...  
WO/1996/002483A1
A process for producing 1,1,1,2,3,3,3-heptafluoropropane (HFC-227ea) by the reaction of hexafluoropropene (HFP) with anhydrous hydrofluoric acid (HF) in the presence of an antimony catalyst, whereby HFC-227ea can be produced in a high yi...  
WO/1996/001797A1
This invention is related to the preparation of hydrofluorocarbons (HFCs). Specifically, it relates to the fluorination of a compound of the formula: CFyCl3-yCH2CHFwCl2-w wherein w = 0 or 1, and y = 0 - 3, with hydrogen fluoride in the p...  
WO/1996/000707A1
A process for producing a fluorinated vic-dichloroalkene derivative and a fluorinated alkane derivative represented by the respective general formulae from an inespensive starting material: R1-CC1=CC1-R2, R1-CR3R4-CR5R6-R2, (wherein R1 a...  
WO/1995/035271A1
A process for producing difluoromethane by fluorinating dichloromethane with hydrogen fluoride in a liquid phase in the presence of a fluorination catalyst under such conditions that the reaction is conducted under an absolute pressure o...  
WO/1995/032935A1
CF3CHFCHF2 production is disclosed which involves reacting CF3CF=CHF with HF at an elevated temperature over a catalyst selected from the group consisting of aluminum fluoride, fluorided alumina, metals supported on aluminum fluoride, me...  
WO/1995/032996A1
This invention relates to carbon based initiators for polymerization and telomerization reactions. Polymers produced are useful as water repellants and materials with high temperature resistance. Telomers are useful as intermediates in t...  
WO/1995/032274A1
A mixed solvent composition containing at least one member selected between 1,1,1,2,3,4,4,5,5,5-decafluoropentane and perfluorohexane and dichloropentafluoropropane as the essential ingredient, or a mixed solvent composition containing a...  
WO/1995/032168A1
A process for the preparation of one or more of CHClFCF3 (HCFC-124), CHF2CClF2 (HCFC-124a) and CHF2CF3 (HFC-125) by reaction of perchloroethylene with hydrogen fluoride in a single stage reaction vessel in the presence of a fluorination ...  
WO/1995/031422A1
The invention relates to a cost effective and convenient process for the manufacture of fluorinated olefins of the formula RCF2CH=CH2 where R is CxClyFz and y + z = 2x + 1. The invention is also directed to a practical process for conver...  
WO/1995/027688A1
A process for the production of pentafluoroethane which comprises contacting a hydrofluorochloroethane having the formula: C2H1Cl1+xF1+y wherein x and y are each independently 0, 1, 2 or 3 provided that x + y is 3, with hydrogen fluoride...  
WO/1995/027689A1
A process for the purification of pentafluoroethane by removing chloropentafluoroethane therefrom which comprises adding to the impure pentafluoroethane a component which undergoes a non-ideal interaction with chloropentafluoroethane and...  
WO/1995/024451A1
Refrigerant compositions include mixtures of difluoromethane and isobutane, butane, propylene or cyclopropane; pentafluroethane and propylene or cyclopropane; 1,1,2,2-tetrafluoroethane and propane; 1,1,1,2-tetrafluoroethane and cycloprop...  
WO/1995/024370A1
The disclosure relates to separating 1,1,2,2 tetrafluoroethane (HFC-134) and 1,1,1,2 tetrafluoroethane (HFC-134a) from each other and/or from fluorocarbon impurities by using extractive distillation with an extractive agent comprising an...  
WO/1995/022994A1
The invention concerns new gas-containing microparticles, agents containing them, their use in medical diagnosis by ultrasonic techniques and methods of producing said particles and agents.  
WO/1995/021148A1
A process is disclosed for separating pentafluoroethane from a mixture comprising pentafluoroethane, 1,1,1,-trifluoroethane and chloropentafluoroethane by using alcohols such as methanol, ethanol, among others, in an extractive distillat...  
WO/1995/021147A1
A process for separating pentafluoroethane from a mixture comprising pentafluoroethane and chloropentafluoroethane by employing extractive agents comprising a hydrochlorocarbon, hydrocarbon, chlorocarbons, among others.  
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/1995/016657A1
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/1995/016655A1
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/1995/016656A1
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/1995/016654A1
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/1995/015937A1
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/1995/013256A1
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/1995/013335A1
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.  

Matches 851 - 900 out of 6,746