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| Number | Title | Issue Date |
| 8030528 | Process for producing 1,2,3,4-tetrachlorohexafluorobutane The process for producing a fluorine-containing compound such as 1,2,3,4-tetrachlorohexafluorobutane of the present invention is characterized in that a halogenated hydrocarbon compound such as 1,2,3,4-tetrachlorobutane is brought into contact with fluorine gas in a... | 10/04/2011 |
| 7982074 | Process for the preparation of 1,1,1,2-tetrafluoroethane The present invention relates to a process for preparing a co-precipitated Cr2O3/Al2O3 catalyst promoted by Zinc, said process comprising co-precipatation of chromium and aluminum metal hydroxides from corresponding trivalent metal s... | 07/19/2011 |
| 7799959 | Process for producing 1,2,3,4-tetrachlorohexafluorobutane Disclosed is a process for producing 1,2,3,4-tetrachlorohexafluorobutane safely in a high yield in the industrial viewpoint and at low cost in the economical viewpoint. Specifically disclosed is a process for producing 1,2,3,4-tetrachlorohexafluorobutane which proce... | 09/21/2010 |
| 7683222 | Method of producing a fluorine-containing compound A method of producing a fluorine-containing compound, which contains the step of: fluorinating a substrate in a solvent with fluorine gas, wherein as said substrate, a substrate that cannot substantially undergo fluorinating reaction independently, is allowed to rea... | 03/23/2010 |
| 7361795 | Azeotrope-like compositions of 1,1,1,3,3-pentafluorobutane and hydrogen fluoride The invention relates to azeotropic and azeotrope-like mixtures of 1,1,1,3,3-pentafluorobutane (HFC-365) and hydrogen fluoride and a process for separating the azeotrope-like mixtures. The compositions of the invention are useful as an intermediate in the production... | 04/22/2008 |
| 7335805 | Processes for purifying reaction products and processes for separating chlorofluorinated compounds Methods and materials are provided for the production of essentially isomerically pure perhalogenated and partially halogenated compounds. One embodiment of the present invention provides a process for the production of essentially isomerically pure CFC-216aa. Other... | 02/26/2008 |
| 7268261 | Production processes Methods and materials are disclosed for the recovery of valuable hydrofluorocarbons and subsequent conversion to environmentally inert compounds. More specifically methods and materials are provided for recovering hydrofluorocarbons such as HFC-227, HFC-236, HFC-245... | 09/11/2007 |
| 7253303 | Fluorination of dicarbonyl compounds The invention provides a method for the preparation of a dicarbonyl compound of formula (I) R1COCFR2COR3 wherein R1 is selected from alkyl, substituted alkyl, cycloalkyl, aryl, substituted aryl and acetoxy, R2 i... | 08/07/2007 |
| 7250539 | Materials and methods for the conversion of hydrofluorocarbons Methods and materials are disclosed for the recovery of valuable hydrofluorocarbons and subsequent conversion to environmentally inert compounds. More specifically methods and materials are provided for recovering hydrofluorocarbons such as HFC-227, HFC-236, HFC-245... | 07/31/2007 |
| 7109386 | Method for preparing a halogenated olefin Process for the preparation of a halogenated olefin by reaction of an alkyne and/or of an allene compound with a hydrogen halide in a liquid medium comprising at least one hydrohalogenation catalyst comprising at least one palladium compound. ... | 09/19/2006 |
| 7094934 | Production process of hydrofluorocarbons In a process for producing a hydrogen-containing fluorinated hydrocarbon in which a halogenated hydrocarbon reaction raw material, which includes a chlorinated alkene and/or a hydrogen-containing chlorinated alkane, is subjected to a fluorination reaction with hydro... | 08/22/2006 |
| 7071368 | Method of making 1,1,1-trifluoroethane A process for producing 1,1,1-trifluoroethane (HFC-143a) which process comprises reacting hydrogen fluoride with vinylidene chloride along with one or more of 1,1,-dichloro-1-fluoroethane (HCFC-141b), 1-chloro-1,1-difluoroethane (HCFC-142b) and 1,1,1-trichloroethane... | 07/04/2006 |
| 7067705 | Process for the preparation of 1,1-dichloro-3,3,3-trifluoropropane A convenient and economical process for the preparation of 1,1-dichloro-3,3,3-trifluoropropane (HCFC-243) by the reaction of 1,1,1,3,3-pentachloropropane (HCC-240) with hydrogen fluoride in the presence of an activated hydrofluorination catalyst. Also, the selective... | 06/27/2006 |
| 7064240 | Process for producing perfluorocarbons and use thereof The process for producing perfluorocarbons according to the present invention is characterized in that in the production of a perfluorocarbon by contacting an organic compound with a fluorine gas, the organic compound is contacted with the fluorine gas at a temperat... | 06/20/2006 |
| 7041859 | Method for halogenating or radiohalogenating a chemical compound A method for obtaining a halogenated organic compound, whereby an organotrifluoroborate compound is reacted with a halide ion in the presence of an oxidizing agent to produce the corresponding halogenated organic compound. The method may be used for producing radioh... | 05/09/2006 |
| 6967260 | Method for purification of tetrafluoromethane and use thereof Tetrafluoromethane containing ethylene compound, hydrocarbon compounds, carbon monoxide and/or carbon dioxide is contacted with zeolite having an average pore size of 3.4 to 11 Å and an Si/Al ratio of 1.5 or less and/or a carbonaceous adsorbent having an average p... | 11/22/2005 |
| 6955789 | Coated liquid phase reactor The present invention relates to a reactor suitable for liquid-phase fluorination and provided, as heating means, with at least one element fixed to the cover so as to be immersed to the bottom of the vessel, characterized in that the parts of said reactor that are ... | 10/18/2005 |
| 6784327 | Process for the production of fluorinated organic compounds and fluorinating agents A process for the production of a fluorinated organic compound, characterized by fluorinating an organic compound having a hydrogen atoms using IF5; and a novel fluorination process for fluorinating an organic compound having a hydrogen atoms by using a f... | 08/31/2004 |
| 6673264 | Azeotrope-like compositions of 1,1,1,3,3-pentafluorobutane and hydrogen fluoride The invention relates to azeotropic and azeotrope-like mixtures of 1,1,1,3,3-pentafluorobutane (HFC-365) and hydrogen fluoride and a process for separating the azeotrope-like mixtures. The compositions of the invention are useful as an intermediate in the... | 01/06/2004 |
| 6630610 | Method of producing fluorinated organic compounds A process for producing a fluorinated organic compound comprising: (a) reacting an organic starting material with a fluorination agent in the presence of a liquid fluorination catalyst under conditions which are effective to vaporize one or more chlorinat... | 10/07/2003 |
| 6426439 | Continuous process for the preparation of pentafluoroethyl iodide Continuous process for the preparation of pentafluoroethyl iodide from iodine, iodine pentafluoride and tetrafluoroethylene, which comprises dissolving the iodine in iodine pentafluoride and continuously feeding the resulting solution to a vertical bubble... | 07/30/2002 |
| 6384289 | Process for production of 1,4-bis(difluoroalkyl)benzene derivative A process is provided which allows a 1,4-bis(difluoroalkyl)benzene derivative to be produced inexpensively by a simple procedure without requiring any special facility. This process comprises causing a compound (A) of the following formula (1): ##STR... | 05/07/2002 |
| 6077819 | Azeotropes of chlorofluoroethanes of the formula CF3 CC12+x ub . F.s1-x with HF and manufacturing processes therewith A process is disclosed for recovering HF from a product mixture comprising HF and at least one compound having the formula CF3 CCl2+x F1-x (where x is 0 or 1). The process includes the steps of distilling the product mixtu... | 06/20/2000 |
| 6034288 | Process for vaporization of halocarbons Prior to carrying out a gaseous phase chemical reaction, a liquid phase organic compound which is prone to degrade is vaporised at elevated pressures with the aid of a second compound. In one embodiment of the invention, vaporisation is effected by co-vap... | 03/07/2000 |
| 5847243 | Process for producing fluorinated alkene and fluorinated alkane A vic-dichloro-fluorinated alkene of the formula: R1 --CCl.dbd.CCl--R2, and a fluorinated alkane of the formula: R1 --CR3 R4 --CR5 R6 --R2, wherein each of R1 ... | 12/08/1998 |
| 5789580 | Selectively fluorinated organic compounds A process for the preparation of a selectively fluorinated organic compound, which process includes reaction of a precursor of said organic compound, the precursor containing at least one Group VI element selected from sulfur, selenium and tellurium, with... | 08/04/1998 |
| 5780691 | Process for producing 1,1,1,2,3,3,3,-heptafluoroprane The invention provides a process for production of 1,1,1,2,3,3,3-heptafluoropropane, HFC-227ea. In particular, the invention provides an inexpensive process for producing HFC-227ea in good yield by reacting 1,1,1,3,3,3-hexafluoropropane, HFC-236fa, with e... | 07/14/1998 |
| 5710351 | Process for producing hexafluoroethane A process for producing hexafluoroethane which comprises reacting a hydrofluorocarbon containing two carbon atoms in the molecule with fluorine gas at an elevated temperature in a vapor phase in the presence of a diluent gas.... | 01/20/1998 |
| 5705718 | Process for the purification of 1,1,1,2-tetrafluoroethane To remove the unsaturated impurities (in particular 1-chloro-2,2-difluoroethylene and polyfluoropropenes) present in crude 1,1,1,2-tetrafluoroethane (F134a), a gaseous mixture of crude F134a, of hydrofluoric acid and of chlorine is treated in gaseous phas... | 01/06/1998 |
| 5324873 | Azeotropic mixture of hydrogen fluoride and 1,1,1-trifluoro-2-chloroethane and process for purification of 1,1,1-trifluoro-2-chloroethane Hydrogen fluoride and 1,1,1-trifluoro-2-chloroethane forms an azeotropic mixture. A mixture comprising hydrogen fluoride and 1,1,1-trifluoro-2-chloroethane is phase separated when it is cooled to a temperature below 7° C. 1,1,1-Trifluoro-2-chloroethane i... | 06/28/1994 |
| 5283380 | Process for preparing an active telogen This invention relates to an improved method of preparing the active telogen CF3 CFClI. The process comprises reacting chlorotrifluoroethylene, iodine, and iodine pentafluoride in the presence of an aluminum bromide catalyst at a temperature ab... | 02/01/1994 |
| 5258561 | Catalytic chlorofluorination process for producing CF3 CHClF and CF3 CHF2 A chlorofluorination process is disclosed which employs a catalyst comprising chromium oxide for producing halohydrocarbons of the formula CHXFCF3 (where X is selected from Cl and F). The process is characterized by feeding a combination of com... | 11/02/1993 |
| 4760205 | 2-iodo-perfluoro-2-methylalkanes, processes for their preparation and their use New processes for the preparation of 2-iodo-perfluoro-2-methyl-butane and the corresponding -pentane are described. In one process, perfluoro-2-methyl-2-butene or the corresponding -pentene is reacted in an amount of at least 5 mol with a mixture of 2 mol... | 07/26/1988 |
| 4513154 | Process for consecutive competitive gas phase reaction A process for consecutive-competitive gas phase halogenation of organic compounds, i.e. alkanes, alkenes and benzene, alkyl benzenes and alkenyl benzenes containing labile hydrogens and having no more than 12 and 9 carbon atoms, respectively, in a thin re... | 04/23/1985 |
| 3992325 | γ-CrOOH fluorination catalysts An improved catalyst comprising an intimate mixture of γ-CrOOH and metal fluoride and its use in the reaction of halogenated aliphatic compounds with HF over a chromium (III) oxide catalyst to produce fluorine-containing aliphatic compounds.... | 11/16/1976 |
| 3933931 | Process for preparing perfluoroalkyl iodides Perfluoroaklyl iodides are prepared by reacting iodine, iodine pentafluoride and tetrafluoroethylene in the presence of a fluoride catalyst selected from the group consisting of niobium fluoride, tantalum fluoride, boron fluoride, and molybdenum fluoride.... | 01/20/1976 |
