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| Number | Title | Issue Date |
| 8058488 | Synthesis of hydrofluoroalkanols and hydrofluoroalkenes Described herein is a process for the manufacture of hydrofluoroalkanols of the structure RfCFClCHROH, comprising reacting a halofluorocarbon of the structure RfCFX2, wherein each X is independently selected from Cl, Br, and I, with ... | 11/15/2011 |
| 7951982 | Method for producing fluorinated organic compounds Disclosed is a process for the preparation of fluorinated olefins. In preferred embodiments C3 olefins are produced by methods comprising contacting a compound of the Formula (I) C(R1aR2bR3c... | 05/31/2011 |
| 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 |
| 7368089 | Systems and methods for producing fluorocarbons Systems and methods for producing fluorocarbons are provided that include contacting a saturated halogenated fluorocarbon with hydrogen and catalyst to produce a saturated hydrofluorocarbon and an unsaturated fluorocarbon. Aspects of the present invention describe s... | 05/06/2008 |
| 7364908 | Separation of fluorous compounds A method of separating at least a first non-fluorous compound from a mixture of compounds including at least the first non-fluorous compound and a second fluorous compound includes: charging the of compounds to a non-fluorous solid (stationary) phase and eluting wit... | 04/29/2008 |
| 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 |
| 7208645 | Process for producing 4-(2-methylphenyl)benzotrifluoride The present invention provides a process for producing 4-(2-methylphenyl)benzotrifluoride, comprising reacting 4-chlorobenzotrifluoride with 2-methylphenylmagnesium chloride in the presence of cobalt-based catalyst and zinc salt. ... | 04/24/2007 |
| 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 |
| 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 |
| 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 |
| 6992229 | Method for purifying a fluorinated hydroxyl compound The present invention has an object to provide a method for purifying a fluorinated hydroxyl compound of the formula 1 safely in a high yield under industrially practical conditions. Namely, a mixture containing a fluorinated hydroxyl compound of Rf—CR | 01/31/2006 |
| 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 |
| 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 |
| 6844474 | Process for the production of difluoromethane 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 selectivity. ... | 01/18/2005 |
| 6825043 | Fluorous tagging compounds and methods of increasing the fluorous nature of compounds A method of increasing the fluorous nature of a compound includes the step of reacting the compound with at least one second compound having the formula: wherein Rf is a fluorous group, Rs is a spacer group, d is 1 or ... | 11/30/2004 |
| 6806396 | Disposal of fluoroform (HFC-23) The present invention relates to the co-pyrolysis of fluoroform and chlorodifluoromethane to form a mixture of useful fluoroolefin and saturated HFCs, notably, tetrafluoroethylene and hexafluoropropylene and CF3CHF2 and CF3CHFCF... | 10/19/2004 |
| 6548712 | Process for producing 1,1,1,5,5,5-hexafluoroacetylacetone The invention relates to a process for producing 1,1,1,5,5,5-hexafluoroacetylacetone. This process includes (a) hydrolyzing a metal complex of 1,1,1,5,5,5-hexafluoroacetylacetone into a 1,1,1,5,5,5-hexafluoroacetylacetone hydrate; and (b) dehydrating the ... | 04/15/2003 |
| 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 |
| 6440892 | Method and catalyst composition for producing aromatic carbonates The present invention provides a method and catalyst composition for carbonylating aromatic hydroxy compounds, comprising the step of contacting at least one aromatic hydroxy compound with oxygen and carbon monoxide in the presence of a carbonylation cata... | 08/27/2002 |
| 6355849 | Process of use in perfluoroalkyation and reactant for making use of this process The subject-matter of the present invention is a process of use in perfluoroalkylation and a reactant for making use of this process. This process is defined in that it comprises a stage in which a material of formula RfH and a base (or a species capable ... | 03/12/2002 |
| 6348634 | Process for the (CFC-113a) dimerization A reductive dimerization process of 1,1,1-trifluoro, 2,2,2-trichloroethane (CFC-113a) with hydrogen, with formation of 1,1,1,4,4,4-hexafluoro-2,2,3,3-tetrachlorobutane and 1,1,1,4,4,4-hexafluoro-2,2-dichlorobutene, and mixtures thereof, wherein the c... | 02/19/2002 |
| 6156163 | Reactant, compound and process for the perfluoroalkylation of the nucleophile, and the derivatives obtained 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 I... | 12/05/2000 |
| 6031141 | Fluoroolefin manufacturing process This invention provides a process for the manufacture of a fluoroolefin of the formula (R1)2 C.dbd.C(R1)2 wherein each R1 is independently selected from the group consisting of --H, --F, --CF3, ... | 02/29/2000 |
| 6025532 | Process for the manufacture of hydrofluoroalkanes In order to manufacture pentafluoroethane (F125) and/or 1,1,1,2,3,3,3-haptafluoropropane (F227ea), a trifluoromethane gas stream is subjected to pyrolysis and then the mixture of gases which result from this pyrolysis is brought into contact with a fluori... | 02/15/2000 |
| 5750810 | Method for coproducing difluoromethane and 1,1,1,2-tetrafluoroethane The present invention relates to the simultaneous manufacture of difluoromethane (F32) and 1,1,1,2-tetrafluoroethane (F134a) by pyrolysis of chlorodifluoromethane in the presence of hydrogen, working at a temperature above 500° C. in the absence of any c... | 05/12/1998 |
| 5536890 | Process for preparing hexafluorobutane 1,1,1,4,4,4-hexafluorobutane is obtained from a trifluoroethane compound, by reacting this with hydrogen in the gas phase and without a diluent on a palladium- and/or nickel-containing supported catalyst and subsequently hydrogenating the reaction product... | 07/16/1996 |
| 5516947 | Process for converting chlorodifluoromethane and/or dichlorodifluoromethane A process is disclosed for the conversion of halogenated methanes of the formula CCly H2-y F2 (wherein y is 1 or 2) to a mixture of conversion products. The process involves reacting certain halogenated hydrocarbon feeds a... | 05/14/1996 |
| 5510545 | Process for the preparation of hydrofluorocarbons The invention relates to a process for the preparation of saturated hydrofluorocarbons by hydrogenating at least one (hydro)fluorocarbon of the formula (I) Rf --CHn Clc Brd Ie (I) in which R | 04/23/1996 |
| 5426252 | Catalytic hydrodechlorination of a chloromethane Chloromethane compounds including carbon tetrachloride and the chlorofluoromethane compounds, such as dichlorodifluoromethane, can be catalytically hydrodechlorinated, e.g., in the case of dichlorodifluoromethane to monochlorodifluoromethane and/or d... | 06/20/1995 |
| 5382720 | Preparation of dimer of fluorine-containing ethane A dimer of fluorine-containing ethane can be obtained in a good selectivity by contacting fluorine-containing ethane of the formula: CF3 --CClX1 X2 (I) wherein each of X1 and X2 is ... | 01/17/1995 |
| 5262556 | Process for the reaction of halogenated aromatics with electrophiles The invention relates to a process for the reaction of fluorinated or chlorinated aromatics with electrophiles at the ortho position relative to the fluorine or chlorine atom, characterized in that a strong base is added to a mixture of the fluorinated or... | 11/16/1993 |
| 5166453 | Method for purification of ethylene compounds having fluorine-containing organic group A purification method of a fluorine-containing alkylethylene comprises reacting the fluorine-containing alkylethylene with powdered metallic zinc in the presence of an aqueous acetic acid solution. By this method, fluorine-containing alkyl iodide and fluo... | 11/24/1992 |
| 5043490 | Novel fluorinated dienes Novel 1,1,2-trifluorodienes, which have a minimum of seven carbon atoms and may contain in their molecule a phenylene or a methylphenylene moiety, are useful monomers, that can be polymerized in the presence of either free radical or coordination catalyst... | 08/27/1991 |
| 4886921 | Synthesis of carbon fluoride and carbon fluoride chloride An improved synthesis of carbon fluoride CFx, and carbon fluoride chloride, (Cy Fx Clz)n, is described. Direct fluorination of the intermediate (Cy Fx Clz)n ... | 12/12/1989 |
| 4691067 | Catalytic process for coupling telomers of chlorotrifluoroethylene A process for coupling two low molecular weight telomers of chlorotrifluoroethylene comprises reacting the telomers with hydrogen in the presence of an effective amount of a catalyst to form a coupled olefin. The catalyst comprises palladium, platinum, rh... | 09/01/1987 |
| 4634797 | Coupling of chloroperfluoroalkanes A process for the coupling of a chloroperfluoroalkane having a --CFCl2 moiety which comprises heating the alkane at a temperature of about 150° to 260° C. in the presence of at least about 0.1 times the molar amount each of copper and zinc at... | 01/06/1987 |
| 4529826 | Solid lubricant and process for preparing it A solid lubricant, consisting of solid perfluorocarbons, with linear or substantially linear carbon atoms chain, containing from 10 to 20 carbon atoms and having a value of surface tension ranging from 13 to 15 dyne/cm, is obtained by dimerization or co-d... | 07/16/1985 |
| 4307259 | Preparation of tetrabromotetrachloroperfluorododecanes A substantially pure mixture of tetrabromotetrachloroperfluorododecanes of the empirical formula C12 Br4 Cl4 F18, of which the isomer ##STR1## is a significant part, is prepared by oligomerizing bromotriflu... | 12/22/1981 |
