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| Number | Title | Issue Date |
| 7513985 | Electrochemical fluorination of acrylic polymer and product therefrom Methods of electrochemically fluorinating an acrylate polymer, and products therefrom. ... | 04/07/2009 |
| 7157600 | Process for preparing (per) fluorohalogenethers A process for preparing (per)fluorohalogenethers containing the —SO2F group, having general formula (I): FSO2—R—CF2OCAF—CA′F2 (I) wherein: A and A′, e... | 01/02/2007 |
| 7094328 | Strong acids, process for the preparation thereof, and uses thereof The present invention relates to acids of the general formula [I], [RyPF6-y]−H+ [I], where y=1, 2 or 3, and in which the ligands R may be identical or different and R is a perfluorinated C1-8-alkyl or aryl gro... | 08/22/2006 |
| 7071272 | Method for preparing unsaturated compound by pyrolysis reaction The present invention provides a method for preparing a compound of CF3CF2CF2OCF═CF2 by pyrolyzing a compound expressed by CF3CF2CF2OCF(CF3)COOCF2CF(CF3)O... | 07/04/2006 |
| 7034179 | Method for producing a fluorinated ester compound The present invention provides a method for producing industrially useful fluorine-containing compounds such as a fluorinated ester compound and an acid fluoride compound. Namely, the present invention resides in a method for producing a fluorinated ester com... | 04/25/2006 |
| 6989088 | Perfluorocyclicamine, constant boiling composition and process for producing the same A process for producing a perfluorocyclicamine which includes electrolytically fluorinating a triallylamine in anhydrous liquid hydrogen fluoride. A constant boiling composition and process for producing the same is also described. ... | 01/24/2006 |
| 6919015 | Process for manufacturing fluoroolefins A process for manufacturing fluoroolefins comprising perfluorinating a starting material comprising at least one carbon-bonded hydrogen by electrochemical fluorination, dissociating this separated effluent in a pyrolysis, quenching and separating the effluent to yie... | 07/19/2005 |
| 6752917 | Process for preparing perfluorinated organic compounds by electrochemical fluorination A novel process for the continuous preparation of perfluorinated organic compounds by electrochemical fluorination of the parent non-fluorinated or partially fluorinated organic compounds, in which the quantity of charge which the electrolyte can still take up is ke... | 06/22/2004 |
| 6395165 | Process for preparing perfluorinated organic compounds by electrochemical fluorination A novel process for the continuous preparation of perfluorinated organic compounds by electrochemical fluorination of the parent non-fluorinated or partially fluorinated organic compounds using hydrogen fluoride having an arsenic content of less than abou... | 05/28/2002 |
| 6264818 | Electrochemical synthesis of perfluoroalkylfluorophosphoranes The invention relates to a process for preparing perfluoroalkylfluorophosphoranes of the general formula (Cn F2n+m)y PF5-y (I) where n is 1, 2, 3, 4, 5, 6, 7 or 8 m is +1 or -1 and y is 1, 2 or 3, where the ligands (C | 07/24/2001 |
| 5573654 | Process for making hexafluoropropane and perfluoropropane Perfluoroisobutene-MeOH adduct (2H-octafluororisobutyl methyl ether) is converted to hexafluoropropane by reaction with trialkyl amine (eg. triethyl amine) and H2 O. 1,1,1,3,3-Pentafluoropropene is also produced in lesser amounts. The electroly... | 11/12/1996 |
| 5486271 | Process for preparing perfluoroalkanesulfonyl fluorides A process for preparing perfluoroalkanesulfonyl fluorides, e.g., perfluoromethanesulfonyl fluoride, is described which comprises electrochemically fluorinating in the presence of anhydrous hydrogen fluoride mono-, di- or tri- alkylsulfonyl alkyl esters or... | 01/23/1996 |
| 5474657 | Preparation of F-alkyl F-isobutyl ethers by electrochemical fluorination A method for the preparation of fluoroalkyl fluoroisobutyl ethers is disclosed. Such ethers are prepared by fluorinating, in an electrochemical cell, a solution comprising an adduct of perfluoro-isobutene and an aliphatic alcohol.... | 12/12/1995 |
| 5427656 | Process for preparing branched perfluorochemicals A process for preparing inert or functional, tertiary carbon-containing perfluorochemicals comprises the step of electrochemically fluorinating, in the presence of anhydrous hydrogen fluoride, a composition comprising at least one starting compound select... | 06/27/1995 |
| 5387323 | Process for preparing fluorochemicals A process for preparing fluorochemical compounds, e.g., perfluoroalkanes, perfluoroethers, and perfluoroalkyl tertiary amines, comprises (a) forming a mixture comprising at least one fluorinatable, non-functional organic starting compound, e.g., propane, and a... | 02/07/1995 |
| 5366597 | Process for the preparation of perfluorobutylsulphonyl fluoride The invention relates to a process for the preparation of perfluorobutylsulphonyl fluoride by electrochemical fluorination of butylsulphonyl fluoride, tetrahydrothiophene-1,1-dioxide (sulpholane), 2,5-dihydrothiophene-1,1-dioxide (sulpholene) or mixtures ... | 11/22/1994 |
| 5364507 | Process for the production of perfluoroalkylsulphonyl fluorides and electrodes for performance of the process The present invention provides a process for the production of perfluoroalkylsulphonyl fluorides of the formula Cn F2n+1 SO2 F with n=6-10 by electrochemical fluorination of alkylsulphonyl halides of the general formula C | 11/15/1994 |
| 5326437 | Process for production of perfluoroalkysulphonyl fluorides In the production of perfluoroalkylsulfonyl fluorides by electrolytic fluorination of alkylsulfonyl fluoride, the electrolyte contains anhydrous hydrogen fluoride, an alkylsulfonyl fluoride, and at least one additional component selected from alkaline ear... | 07/05/1994 |
| 5322597 | Bipolar flow cell and process for electrochemical fluorination An electrochemical fluorination process comprises passing by forced convection a liquid mixture comprising anhydrous hydrogen fluoride and fluorinatable organic compound, e.g., tripropyl amine, at a temperature and pressure at which a substantially contin... | 06/21/1994 |
| 5318674 | Process for preparing perfluoroalkanesulfonyl fluorides A process for preparing perfluoroalkanesulfonyl fluorides, e.g., perfluoromethanesulfonyl fluoride, comprises electrochemically fluorinating in the presence of anhydrous hydrogen fluoride at least one precursor compound selected from the group consisting ... | 06/07/1994 |
| 5279714 | Preparation of fluoroanilines by electrochemical means A process for the preparation of a compound of Formula A: ##STR1## wherein X1 and X2 are independently selected from H or any substituent which does not interfere with the electrochemical reductive fluorination; and Z1 | 01/18/1994 |
| 5108556 | Process for preparing tertiary perfluoroamines A process for preparing tertiary perfluoroamines is provided. The process comprises electrochemically fluorinating a tertiary thioamide precursor, said thioamide precursor having at least one thioamide moiety, ##STR1## and terminal portions which can... | 04/28/1992 |
| 5091064 | Method for preparing perfluorinated heterocyclic compounds, and compounds prepared by this method A method for preparing perfluorinated heterocyclic compounds corresponding to the formulas Ia and Ib ##STR1## wherein m represents 3 or 4, and x is a --CF2 --O--CF2 -- group, a --CF2 --CF2 --CF2 ... | 02/25/1992 |
| 5075508 | Triperfluoroalkylamines and preparation of the same Triperfluoroalkylamines of the formula: ##STR1## wherein, Rf1 and Rf2 are each a perfluoroalkyl group having 1 to 4 carbon atoms, and Rf3 is a perfluoroalkyl group having 3 to 11 carbon atoms, have good thermal stabil... | 12/24/1991 |
| 4929317 | Process for preparation of perfluoro organic compounds Disclosed is a process for the preparation of a perfluoro organic compound, which comprises fluorinating a partially fluorinated or unfluorinated organic compound having carbon-to-fluorine bonds under mild conditions and then, contacting the resulting rea... | 05/29/1990 |
| 4830715 | Functionalization of iodopolyfuorgalkanes by electrochemical reduction The invention relates to the preparation of functionalized derivatives from iodopolyfluoroalkanes by electrochemical reduction. This reduction is carried out in a formamide or substituted formamide solvent which may contain up to 70% (by volume) water, on... | 05/16/1989 |
| 4472251 | Electrolytic synthesis of organic compounds from gaseous reactant Discloses electro-organic synthesis of fluorocarbons, and organic sulfur compounds.... | 09/18/1984 |
| 4466881 | Process for the preparation of (ω-fluorosulfonyl)haloaliphatic carboxylic acid fluorides A novel process is disclosed for preparing (ω-fluorosulfonyl)haloaliphatic carboxylic acid fluorides by electrolytic fluorination, simply and efficiently.... | 08/21/1984 |
| 4425199 | Process for the preparation of (ω-fluorosulfonyl)-haloaliphatic carboxylic acid fluorides A novel process is disclosed for preparing (ω-fluorosulfonyl)haloaliphatic carboxylic acid fluorides by electrolytic fluorination, simply and efficiently.... | 01/10/1984 |
| 4235782 | Perfluoro(4-methyl-2-oxabicyclo[4.4.0]decane) and method for manufacture thereof Perfluoro(4-methyl-2-oxabicyclo[4.4.0]decane) is a novel compound and this novel compound is manufactured by the electrolytic fluorination of 2-methyl-3-cyclopropionic acid or a derivative thereof in hydrogen fluoride.... | 11/25/1980 |
| 4231849 | Process for the preparation of a perfluorinated cyclic ether An inert fluid of high chemical stability which comprises a perfluorinated cyclic ether having the formula C10 F20 O, and its preparation by perfluorination of the corresponding ethylenically-unsaturated cyclic ether C10 F... | 11/04/1980 |
| 4146443 | Introducing feed into externally circulating electrolyte in electrochemical process In an electrochemical operation, e.g., fluorination of an organic compound, the electrolyte is removed from the electrochemical cell, optionally circulated through a cooler, and returned to the cell. The feed is introduced into the electrolyte externally ... | 03/27/1979 |
| 4038310 | Acid anhydride to react with impurities in the production of perfluorocarboxylic acids Perfluorocarboxylic acids are produced by a metathesis reaction between an acid and a perfluoro acid fluoride in the presence of an acid anhydride. The perfluoroacid fluoride can conveniently be produced by electrochemical fluorination of the acyl fluorid... | 07/26/1977 |
| 4035250 | Production of perfluoro-n-heptane Perfluoro-n-heptane is produced by an electrochemical fluorination process comprising cooling the effluent from a first cell to a temperature sufficient to condense such effluent, separating a fluorocarbon-rich phase from the condensate, a second stage fl... | 07/12/1977 |
| 4024192 | Perfluorocyclohexyl ethers New and useful perfluorinated cyclohexyl ethers are manufactured by reacting a phenol with hexafluoro propene or tetrafluoro ethylene, dissolving the partly fluorinated phenyl alkyl ethers obtained in hydrofluoric acid and electrolyzing the solution.... | 05/17/1977 |
| 4003807 | Electrochemical fluorination of ketones within the pores of an anode Low molecular weight ketones are fluorinated by passing same into contact with an essentially anhydrous liquid hydrogen fluoride electrolyte within the pores of a porous anode.... | 01/18/1977 |
| 3983015 | Electrochemical fluorination using excess current An electrochemical fluorination process is carried out in a system utilizing a porous carbon anode wherein there is contact, within the pores of the anode, between an essentially anhydrous liquid hydrogen fluoride electrolyte and a fluorinatable feedstock... | 09/28/1976 |
| 3981783 | Electrochemical fluorination process utilizing excess current and hydrogen addition In an electrochemical fluorination process, feedstock is introduced near the bottom end of a porous carbon anode and an excess of electric current is utilized so as to generate excess free fluorine. Hydrogen is introduced at a point near the top of the an... | 09/21/1976 |
| 3980534 | Electrochemical fluorination and an electrode for use therein In a process for electrochemical fluorination of a substrate by the use of a cell comprising a cathode and a nickel anode immersed in hydrogen fluoride the anode potential is carefully controlled between fixed limits with respect to a reference electrode ... | 09/14/1976 |
| 3962348 | Aliphatic and cyclic perfluoro-alkyl ethers and process for the preparation thereof Mono- or polyhydric alcohols of the alkan-, tetrahydrofuran- or tetrahydropyran series or di- or tri-alkyleneglycols are dissolved in an aprotic polar solvent and reacted with C3 F6 in the presence of trialkylamines, or with tetraflu... | 06/08/1976 |
