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Matches 901 - 950 out of 6,213

Document Document Title
WO/1993/013041A1
A method of removing chloroform contained in 1,1,1,2,2-pentafluoro-3,3-dichloropropane (R-225ca), 1,1,2,2,3-pentafluoro-1,3-di-chloropropane (R-225cb), or a mixture thereof by the reaction of the chloroform with chlorotrifluoroethylene a...  
WO/1993/012059A1
A method of obtaining alpha-substituted omega-hydroperfluoroalkanes of general formula: H(CF2CF2)nH where R = H, COOH, n = 1-10, consists in oxidation of alpha, alpha, omega-trihydroperfluoroalcohols by gaseous oxygen or an oxygen-contai...  
WO/1993/012057A1
A process for the production of a hydro(halo)fluorocarbon which comprises heating an alpha-fluoroether in the vapour phase at elevated temperature. alpha-fluoroethers are obtained by reacting a non-enolisable aldehyde with hydrogen fluor...  
WO/1993/012058A1
2-Chloro-1,1-difluoroethylene (R-1122) is removed from 1,1,1,2-tetrafluoroethane (R-134a) by contacting the R-134a in the vapor phase with chlorine in the presence of ultraviolet light providing an exposure of at least about 2 watts-hour...  
WO/1993/011853A1
Water present in a hot gaseous product stream from a reactor system (A, B) (Figure 1) containing hydrogen fluoride is separated from the stream in order to eliminate a potentially corrosive combination of water and HF. The water is remov...  
WO/1993/011201A1
Azeotropes of hydrofluorocarbons and hydrofluoroethers useful for use as refrigerants are disclosed. Zeotropes of hydrofluoropropanes and hydrofluoroethers with hydrofluorocarbons, hydrofluoroethers, and hydrocarbons useful as refrigeran...  
WO/1993/011098A1
New compounds are described typically having the formula CH3C(CH2R)3 or ZCH2C(CH2R)3 where R is a fluorohydrocarbon or perfluorocarbon group preferably containing 4-16 carbon atoms and more F atoms than H atoms. Z is a hydrophilic group ...  
WO/1993/011093A1
A process for producing 1,1,1-trifluoro-2-chloroethane (R-133a) and/or 1,1,1,2-tetrafluoroethane (R-134a) which comprises distilling in a distilling column a part or the whole of a mixture mainly comprising R-133a, R-134a, hydrogen fluor...  
WO/1993/010067A1
1,1,1,4,4,4-Hexafluorobutane is produced in a high yield at high selectivity by reducing 2-chloro-1,1,1,4,4,4-hexafluoro-2-butene with hydrogen in the presence of a hydrogenation catalyst containing an alloy composed of a first metallic ...  
WO/1993/010070A1
A process for the production of bis(fluoromethyl)ether by contacting formaldehyde with hydrogen fluoride in a reaction/distillation vessel. The reaction/distillation vessel is preferably a reaction/distillation column through which forma...  
WO/1993/009080A1
A process for producing 1,1-dichloro-2,2,2-trifluoroethane in a high yield by reducing 1,1,1-trichloro-2,2,2-trifluoroethane with hydrogen in the presence of a hydrogenation catalyst prepared by adding at least one metal selected from th...  
WO/1993/009081A1
A process for producing 1,1,1,2,2,4,4,4-octafluorobutane in a high yield by reducing 3,3-dichloro- or 3,3-dibromo-1,1,1,2,2,4,4,4-octafluorobutane.  
WO/1993/009199A1
Compositions of difluoromethane, 1,1,1,2-tetrafluoroethane, and 1,1,2,2-tetrafluoroethane are useful as refrigerants, aerosol propellants, heat transfer media, gaseous dielectrics, fire extinguishing agents, expansion agents for polymers...  
WO1993005002A3  
WO/1993/008240A1
Azeotropic mixtures of HFC-338pcc and an alcohol such as methanol, ethanol, isopropanol or N-propanol, or a ketone such as acetone, are disclosed that are useful as cleaning agents, refrigerants, aerosol propellants, heat transfer media,...  
WO/1993/008147A1
A process for separating and recovering an organic phase (e.g., fluorocarbons such as chlorofluorocarbons, hydrochlorofluorocarbons, hydrofluorocarbons and perfluorocarbons) from a feed stream of a mixture of fluorocarbons and hydrogen f...  
WO/1993/007308A1
Azeotropic mixtures of 1,1,1,2,3,4,4,5,5,5-decafluoropentane (HFC-43-10mee) and trans-1,2-dichloroethylene, cis-1,2-dichloroethylene or 1,1-dichloroethane are useful as cleaning agents, expansion agents for polyolefins and polyurethanes,...  
WO1993001152A3  
WO/1993/007231A1
Certain compositions of pentafluoroethane and chlorodifluoromethane have unusual efficiency and capacity as fluids for heating and cooling. Such compositions may include additives such as lubricants and solubility enhancers for lubricant...  
WO/1993/007232A1
Substantially constant boiling mixtures of difluoromethane and 1,1,1-trifluoroethane or perfluoroethane are useful as refrigerants, aerosol propellants, heat transfer media, gaseous dielectrics, fire extinguishing agents, and expansion a...  
WO/1993/006070A1
The present invention provides a class of hydrochlorofluorocarbons having a tertiary structure, 5 carbon atoms, 1 chlorine atom, 6 to 8 fluorine atoms, and OH rate constants from about 8 to about 15 cm3/molecule/secx10-14. The hydrochlor...  
WO/1993/006187A1
A refrigerant comprising 1,1,1,4,4,4-hexafluorobutane and a refrigerator using 1,1,1,4,4,4-hexafluorobutane as the refrigerant.  
WO/1993/006188A1
A mixture of difluoromethane with octafluoropropane, and a refrigerator using a refrigerant comprising said mixture.  
WO/1993/005002A2
A catalytic process is disclosed for producing fluorine-substituted hydrocarbon products of the formulae RCH2CF2R and RFC=CHR at an elevated temperature, from compounds of the formula RCHFCHFR, where each R is independently selected from...  
WO/1993/004025A1
The present invention provides hydrochlorofluorocarbons having 3 to 5 carbon atoms, 1 to 2 chlorine atoms, and an OH rate constant from about 8 to about 25 cm3/molecule/sec x 10-14. The hydrochlorofluorocarbons are useful as solvents and...  
WO/1993/004024A1
A catalytic process is disclosed for producing CCl3CF3 from CHCl2CF3, CH2ClCF3 and/or CH3CF3 by chlorination at elevated temperature. Suitable catalysts for the process include carbon catalysts and catalysts wherein halides of certain me...  
WO/1993/002029A1
Catalytic hydrogenolysis of fluorohalocarbons (e.g., CFCs) and fluorohalohydrocarbons (e.g., HCFCs), using catalysts of Re, Co, Ni, Ru, Rh, Pd, Os, Ir, and/or Pt on a carbon having low ash content. Preferred catalysts use carbon which is...  
WO/1993/001152A2
Constant boiling azeotropic or azeotrope-like composition of pentafluoroethane and propane or isobutane are disclosed that are useful as refrigerants, aerosol propellants, heat transfer media, gaseous dielectrics, fire extinguishing agen...  
WO1992019706A3  
WO/1992/020640A1
Separating pentafluoroethane from a mixture of pentafluoroethane and chloropentafluoroethane by adding a fluorocarbon extractive agent having 1-4 carbon atoms, and optionally containing hydrogen and/or chlorine, in an extractive distilla...  
WO/1992/019576A1
An improved process for the manufacture of CF�3?CHF�2? by contacting 1,2-dichloro-1,1,2-trifluoroethane (CClF�2?CHClF) or 1-chloro-1,1,2,2-tetrafluoroethane (CHF�2?CClF�2?) or mixtures of CF�3?CHCl�2? and CClF�2?CHClF or ...  
WO/1992/019706A2
The compound, 1,1,1,2,2,3,3,4,4,5,6-undecafluorohexane, and mixtures thereof with alcohols, ethers, esters, ketones, nitromethane, and halogenated hydrocarbons are disclosed; as is the use thereof for cleaning a solid surface by treating...  
WO/1992/018446A1
Mixtures of halocarbons which contain fluorine and chlorine and/or bromine (e.g. a mixture of CCl2FCF3 with CClF2CF3, CCl2F2, CClF2CClF2 or CHClF2) are contacted with hydrogen in the presence of silicon carbide and/or a metal selected fr...  
WO/1992/017558A1
The azeotropic and azeotrope-like compositions of 1,1,1,2-tetrafluoroethane and one of 1,1-difluoroethane, 1-chloro-1,1-difluoroethane, dimethyl ether, perfluorocyclobutane, n-butane, isobutane and 1,1,1,2,3,3,3-heptafluoropropane, and t...  
WO/1992/017559A1
Trichlorofluoromethane refrigeration systems use mineral oil to lubricate the compressor. We have found that the use of 1,1-dichloro-2,2,2-trifluoroethane and mineral oil results in the formation of 1-chloro-2,2,2-trifluoroethane; in the...  
WO/1992/016481A1
A process is disclosed for producing HFC-134a which includes reacting certain tetrahaloethane starting materials (e.g., 2-chloro-1,1,1-trifluoroethane) with HF in the gaseous phase at an elevated temperature in the presence of certain su...  
WO/1992/016197A1
Optically pure (S) metoprolol, which is substantially free of the (R) enantiomer, is a potent beta-blocker for treating myocardial infarction and for relieving the symptoms of angina pectoris, cardiac arrhythmia and hypertension in indiv...  
WO/1992/014444A1
Aerosol formulations for use in metered dose inhalers are disclosed which include 1,1,1,2-tetrafluoroethane alone and in combination with other compounds as well as various hydrocarbon blends. The density, vapor pressure, flame extension...  
WO/1992/013817A1
A vapor phase process is disclosed for producing HCFC-225s, HCFC-235s, HCFC-226s, HFC-236s, and HFC-227s by reacting certain three-carbon reactants containing at least one less fluorine than, and at least as many hydrogen substituents as...  
WO/1992/011339A1
Ternary mixtures of pentafluoroethane, difluoromethane and tetrafluoroethane are useful as refrigerants, aerosol propellants, heat transfer media, gaseous dielectrics, fire extinguishing agents, expansion agents for polyolefins and polyu...  
WO/1992/011338A1
Constant boiling mixtures of pentafluoroethane and difluoromethane are useful as refrigerants, aerosol propellants, heat transfer media, gaseous dielectrics, fire extinguishing agents, expansion agents for polyolefins and polyurethanes, ...  
WO/1992/010453A1
The present invention provides stabilized compositions comprising 1,1-dichloro-1-fluoroethane and effective stabilizing amounts of stabilizer selected from the group consisting of alkanol having 4 to 7 carbon atoms, nitroalkane having 1 ...  
WO/1992/010452A1
Vinylidene chloride is removed from 1,1-dichloro-1-fluoroethane (HCFC-141b) by contacting the HCFC-141b in the vapor phase with chlorine in the presence of ultraviolet light providing an exposure up to about 50 watts-hour/kg.  
WO/1992/009548A1
A process for producing 3,3-dichloro-1,1,1,2,2-pentafluoropropane (R225ca) and 1,3-dichloro-1,1,2,2,3-pentafluoropropane (R225cb) from tetrafluoroethylene (C¿2?F¿4?) and dichlorofluoromethane (R21) in high yields at high selectivity, b...  
WO/1992/007111A1
Azeotropic mixtures of 1,1,1,2,3,4,4,5,5,5-decafluoropentane and trans 1,2-dichloroethylene with methanol or ethanol, the azeotropic mixtures being useful in solvent cleaning applications.  
WO/1992/007112A1
Azeotropic mixtures of 1,1,1,2,3,4,4,5,5,5-decafluoropentane and methanol or ethanol or isopropanol, the azeotropic mixtures being useful in solvent cleaning applications, as blowing agents, refrigerants, heating mediums and aerosol prop...  
WO/1992/006941A1
The compounds CF3CHFCHFCF2CF3, CF3CH2CHFCF2CF3, CF3CHFCH2CF2CF3, CF3CHFCHFCF2CF2CF3, CF3CH2CHFCF2CF2CF3, CF3CHFCH2CF2CF2CF3, CF3CF2CH2CHFCF2CF3, CF3CF2CHFCHFCF2CF2CF3, CF3CHFCHFCF2CF2CF2CF3, CF3CHFCH2CF2CF2CF2CF3, CF3CH2CHFCF2CF2CF2CF3, ...  
WO/1992/006060A1
A process for coupling fluorocarbons of the formula Rf-I, RfCH¿2?CH(Rf)-I, RfCH¿2?CH(Rf)CH¿2?CH(Rf)-I, where Rf is C¿n?F¿2n+1? where n is 1 to 10 is disclosed. The process involves an acidic aqueous treatment in the presence of zinc...  
WO/1992/004307A1
The method proposed enables extensively fluorinated alkyl bromides, in particular perfluoroalkyl bromides, to be prepared by reacting extensively fluorinated alkyl iodides with organic bromine compounds in which the bromine atom is coval...  
WO/1992/003397A1
A difluorinated hydrocarbon compound represented by general formula (1) is reacted with cobalt trifluoride to give a trifluorinated hydrocarbon compound represented by general formula (2), wherein R represents lower alkyl and R' and R'' ...  

Matches 901 - 950 out of 6,213