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| Number | Title | Issue Date |
| 8088959 | Conversion of fluorocarbons A process is disclosed for the conversion of fluorocarbons into fluorinated unsaturated compounds useful as monomers or other chemical precursors, such as C2H2F2. The process comprises reacting a hydrocarbon feed (20) arid a f... | 01/03/2012 |
| 7951983 | Catalyzed olefin insertion A process for the insertion of a fluorinated olefin into a fluorinated iodide in the presence of a nickel catalyst at a temperature of a maximum of 150° C. with an initial rate of 0.04 mole/hour without loss of selectivity is disclosed. ... | 05/31/2011 |
| 7888538 | Catalyzed olefin insertion A process for the insertion of a partially fluorinated olefin into a fluorinated iodide in the presence of a nickel catalyst at a temperature of a maximum of 150° C. with an initial rate of 0.01 mole/hour without loss of selectivity is disclosed, as well as use of ... | 02/15/2011 |
| 7557254 | Method for producing fluorinated organic compounds A method for preparing fluorinated organic compounds wherein at least one fluorinated olefin is reacted with methyl fluoride in the gas-phase and in the presence of a Lewis Acid catalyst to form at least one product having at least 3 carbon atoms. ... | 07/07/2009 |
| 7396965 | Method for producing fluorinated organic compounds A method for preparing fluorinated organic compounds wherein at least one fluorinated olefin is reacted with methyl fluoride in the gas-phase and in the presence of a Lewis Acid catalyst to form at least one product having at least 3 carbon atoms. ... | 07/08/2008 |
| 7371904 | Processes for synthesis of 1,3,3,3-tetrafluoropropene Disclosed is a process for the synthesis of 1,3,3,3-tetrafluoropropene which comprises, in one embodiment, reacting a compound of CF3X1 with a compound of CX2H═CHX3, wherein X1, X2, and X3 | 05/13/2008 |
| 7335804 | Direct conversion of HCFC 225ca/cb mixture Provided are methods for producing hydrofluorocarbons via the selective reduction of a halocarbon blend comprising 1,3-dichloro-1,1,2,2,3-pentafluoropropane. ... | 02/26/2008 |
| 7265082 | Azeotrope-like compositions of 1,1,1,3,3-pentachloropropane and carbon tetrachloride The invention relates to azeotropic and azeotrope-like mixtures of 1,1,1,3,3-pentachloropropane (HCC-240fa) and carbon tetrachloride and a process for separating the azeotrope-like mixtures. The compositions of the invention are useful as an intermediate in the prod... | 09/04/2007 |
| 7230147 | Process for functionalizing a double bond The invention concerns a method for functionalizing a double bond and, more particularly, a double bond bearing a metalloid atom. Said functionalization is produced by the action of perhalogenated sulphonyl chloride on the carbon bearing sulphur in the presence of a... | 06/12/2007 |
| 7214815 | Metallic copper catalyst for polyfluoroalkylethyl iodide production and process for producing polyfluoroalkylethyl iodide The present invention provides a metallic copper catalyst for use in an ethylene addition reaction to polyfluoroalkyl iodides, a process for efficiently producing a polyfluoroalkylethyl iodide using such a metal copper catalyst in an ethylene addition reaction to a ... | 05/08/2007 |
| 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 |
| 7102041 | Continuous process for preparing halogenated compounds A process for preparing a haloalkane comprising: (a) contacting a haloalkane starting material with an alkene in the presence of an effective amount of a catalyst complex under conditions effective to facilitate an addition reaction and to form a product stream comp... | 09/05/2006 |
| 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 |
| 7094936 | Process for preparing halogenated alkanes Methods and materials are provided for the production and purification of halogenated compounds and intermediates in the production of 1,1,1,3,3-pentafluoropropane. In a preferred embodiment, the process steps include: (1) reacting carbon tetrachloride with vinyl ch... | 08/22/2006 |
| 7074434 | Process for the separation of a mixture comprising at least one hydrofluoroalkane and hydrogen fluoride, processes for the preparation of a hydrofluoroalkane and azeotropic compositions Process for the separation of a mixture comprising at least one hydrofluoroalkane and hydrogen fluoride, according to which a hydrofluoroalkane/hydrogen fluoride mixture is reacted with at least one chlorinated or chlorofluorinated precursor of the hydrofluoroalkane... | 07/11/2006 |
| 7053253 | Process for purifying hexafluoropropene dimers Perfluoro-4-methyl-2-pentene containing the undesirable perfluoro-2-methyl-2-pentene may be purified by contacting the mixture with at least a stoichiometric equivalent of an aqueous inorganic base (relative to the perfluoro-2-methyl-2-pentene), in the presence of a... | 05/30/2006 |
| 7038095 | Method for producing fluoroalkyl iodide telomer mixture and method for producing mixture fluorine-containing (meth) acrylate esters A mixture of fluoroalkyl iodide telomers represented by the formula: Rf(CF2CF2)nI wherein Rf represents a fluoroalkyl group whose number of carbon atoms is in the range of 1 to 10, with the polymerization degree... | 05/02/2006 |
| 6958422 | Pyrolysis process The present invention relates to the pyrolysis of hydrochlorofluorocarbons to form fluoromonomers such as tetrafluoroethylene, the pyrolysis being carried out in a reaction zone lined with nickel and mechanically supported by a jacket of other corrosion resistant me... | 10/25/2005 |
| 6930215 | Process for the preparation of 1.1.1.3.3-pentafluoropropane 1,1,1,3,3-pentafluoropropane is produced by reaction between 1,1,1,3,3-pentachloropropane and hydrogen fluoride in the presence of a hydrofluorination catalyst. The 1,1,1,3,3-pentachloropropane may advantageously be obtained by reaction between vinyl chloride and te... | 08/16/2005 |
| 6924403 | Synthesis of hexafluoropropylene The present invention relates to the process of pyrolyzing tetrafluoroethylene to hexafluoropropylene by carrying out the pyrolysis in a tubular reactor that is lined with either nickel or nickel alloy which contains no greater than 8 wt % chromium. ... | 08/02/2005 |
| 6919490 | Method for continuous production of a perfluoroalkyl iodide telomer The present invention relates to a process for continuously producing a perfluoroalkyl iodide represented by the general formula Rf(CF2CF2)nI, wherein Rf is a C1-6 perfluoroalkyl and n is an integer f... | 07/19/2005 |
| 6858763 | Process for preparing elastomeric ethylene-hexafluoropropylene copolymer The present invention relates to a process for preparing an elastomeric ethylene-hexafluoropropylene copolymer with excellent vulcanization properties, which comprises emulsion polymerizing ethylene, hexafluoropropylene and when in demand, a monomer copolymerizable ... | 02/22/2005 |
| 6730817 | Method for preparing 1,1,1,3,3-pentafluoropropane 1,1,1,3,3-Pentafluoropropane is produced by reaction between 1,1,1,3,3-pentachloropropane and hydrogen fluoride in the presence of a hydrofluorination catalyst. The 1,1,1,3,3-pentachloropropane may advantageously be obtained by reaction between vinyl chloride and te... | 05/04/2004 |
| 6720466 | 1,1,1,3,3-pentachloropropane process purge stream concentration using a secondary refluxed evaporator and secondary product recovery A process for economically producing 1,1,1,3,3-pentachloropropane under conditions which preserve the activity of the catalyst. In a preferred embodiment, a two-stage distillation process is employed. In the two-stage process, the size of the equipment, temperature ... | 04/13/2004 |
| 6518467 | Method of making hydrofluorocarbons and hydrochlorofluorocarbons A method of producing hydrofluorocarbons and/or hydrochlorofluorocarbons by using halogenated alkanes as a principal reactant. Generally, the method comprises the step of: (a) reacting a starting halogenated alkane corresponding to the formula (I): H... | 02/11/2003 |
| 6472574 | Production of 1,2-dihydro and 2,2-dihydro hexafluoropropanes and azeotropes thereof with HF CF3 CHFCHF2 production is disclosed which involves reacting CF3 CF.dbd.CHF with HF at an elevated temperature over a catalyst selected from the group consisting of aluminum fluoride, fluorided alumina, metals supported on ... | 10/29/2002 |
| 6452057 | Process for preparing halohydrocarbons in the presence of a co-catalyst Halohydrocarbons comprising at least 3 carbon atoms are obtained by batchwise reaction between a haloalkane and an olefin in the presence of a catalyst and a co-catalyst. The addition of at least some of the co-catalyst is carried out gradually. At least ... | 09/17/2002 |
| 6448452 | Fluorine-containing diene, its production method and its polymer A polymer which contains monomer units formed by polymerization of a fluorine-containing diene of formula 1: CF2.dbd.CF(CF2)n CXYOCF.dbd.CF2 Wherein X and Y are hydrogen and chlorine, hydrogen and-bromine, hydrogen a... | 09/10/2002 |
| 6441256 | Method for preparing of halogenated hydrocarbons Halohydrocarbons comprising at least 3 carbon atoms are obtained by reaction between a haloalkane and a haloolefin, in the substantial absence of nitrile, and by introducing the reactants in a molar ratio between the haloalkane and the haloolefin of less ... | 08/27/2002 |
| 6417413 | Process for the preparation of halogenated ethanes A process for preparing halogenated ethanes, particularly pentafluoroethane, from a mixture produced by the reaction of perchloroethylene, hydrogen fluoride and a recycle stream. The preferred process utilizes phase separation techniques to ensure that le... | 07/09/2002 |
| 6399839 | Method for preparing halogenated hydrocarbons Halohydrocarbons comprising at least 3 carbon atoms are obtained by reaction between a haloalkane and an olefin in the presence of an organocopper compound as catalyst, a solvent and/or a cocatalyst. 1,1,1,3,3-Penta-chloropropane can thus be obtained in g... | 06/04/2002 |
| 6399840 | Method for the preparation of 1,1,1,3,3-pentachlorobutane 1,1,1,3,3-pentachlorobutane is obtained by reacting carbon tetrachloride with 2-chloro-1-propene in the presence of at least one copper (I) or (II) compound as telomerization catalyst. Advantageously, a polar compound can be present in the reaction mixtur... | 06/04/2002 |
| 6369285 | Process for preparing halohydrocarbons Halohydrocarbons containing at least 3 carbon atoms are obtained by reaction between a haloalkane and an olefin in the presence of a catalyst in a reaction medium which is essentially free of water.... | 04/09/2002 |
| 6365676 | Poly-perfluoroalkyl substituted polyamines as grease proofing agents for paper and foam stabilizers in aqueous fire-fighting foams The invention concerns a process for the reaction of a perfluoroalkyl iodide of the formula CF3 (CF2)h --I, where h is an integer from 4 to 18, with a compound having a terminal olefinic group, which comprises conducting s... | 04/02/2002 |
| 6300532 | Process for addition of haloalkanes to alkenes catalyzed by an organophosphite compound A process for catalytic addition of haloalkanes to alkenes involving the step of reacting the haloalkane with the alkene in the presence of a catalyst. The catalyst is an organophosphite compound represented by the following formula: P(ORa)(OR | 10/09/2001 |
| 6291730 | Process for the manufacture of halocarbons and selected compounds and azeotropes with HF A liquid phase process is disclosed for producing halogenated alkane adducts of the formula: CAR1 R2 CBR3 R4 (where A, B, R1, R2, R3, and R4 are as defined in the spec... | 09/18/2001 |
| 6191327 | Method for producing dichloropentafluoropropanes The present invention relates to a simple method for producing 3,3-dichloro-1,1,1,2,2-pentafluoropropane (R225ca) and 1,3-dichloro-1,1,2,2,3-pentafluoropropane (R225cb) in good yield and at high selectivity by reacting tetrafluoroethylene (C2 F... | 02/20/2001 |
| 6187978 | Continuous process for manufacturing halogenated compounds A process for preparing a haloalkane comprising: (a) contacting a haloalkane starting material with a haloalkene starting material in the presence of an effective amount of a catalyst complex under conditions effective to facilitate an addition reaction a... | 02/13/2001 |
| 6184426 | Addition of hydrofluorocarbons to fluoroolefins A process is disclosed for forming adducts of the formula: RR1 R2 CCR1 R2 F or (FR1 R2 CCRR2 CH2)2 where R is CH3, CH2 F, or F(CF2 | 02/06/2001 |
| 6153803 | Process for the preparation of halohydrocarbons Halohydrocarbons comprising at least 3 carbon atoms are obtained by reaction between a haloalkane and a haloolefin in the presence of an organonickel compound as catalyst, and optionally in the presence of a solvent. 1,1,1,3,3-Pentachlorobutane can thus b... | 11/28/2000 |
