Class 570/160 - Substituting fluorine for a different halogen

Subclass of Class 570 - Organic compounds -- part of the class 532-570 series
Definition: Process wherein an atom of fluorine replaces a different
No. of patents: 34
Last issue date: 12/13/2011

Number	Title	Issue Date
8076521	Process for the manufacture of hydrofluoroolefins In this invention we are disclosing a process for the synthesis of hydrochlorofluoro olefins (HCFO) and/or hydrofluoroolefins (HFO). The process is based on the following steps of liquid phase, noncatalytic fluorination of hydrochloropropenes to form hydrochlorofluo...	12/13/2011
7319174	Dry-etching gas for semiconductor process and preparation method thereof The invention is a method for continuously preparing highly pure octafluorocyclopentene for use in dry-etching processes. The method includes reacting octachlorocyclopentene with KF in a continuous manner, and purifying crude octafluorocyclopentene. In the reacting ...	01/15/2008
7294747	Method of producing 1,1-difluoroethane and application thereof for the production of 1,1-difluoroethylene Process for the manufacture of 1,1-difluoroethane by liquid-phase fluorination of 1,2-dichloroethane using hydrofluoric acid in the presence of a Lewis acid as catalyst and of FeCl3 as cocatalyst. Process for the manufacture of 1,1-difluoroethylene employ...	11/13/2007
7214839	Method of making hydrofluorocarbons A manufacturing process for making hydrofluorocarbons (HFCs), by reacting a hydrochlorocarbon and HF in a liquid phase catalytic reactor using a large mole ratio of HF to hydrochlorocarbon to minimize formation of high boiling by-products and improve HF consumption ...	05/08/2007
7189884	Processes for synthesis of tetrafluoropropene Disclosed in one embodiment is a process for the synthesis of 1,3,3,3-tetrafluoropropene that comprises (a) reacting a compound of formula (I) X1X2 with a compound of formula (II) CF3CH═CH2 to produce a reaction product ...	03/13/2007
7074975	Catalytic synthesis of halogenated compounds with catalyst regeneration with elemental halogen Catalysts such as antimony halides, which are useful in fluorination reactions involving hydrogen fluoride, may be reduced during the reaction and require regeneration. Regenerative oxidation is usually carried out by introducing elemental halogen, preferably fluori...	07/11/2006
6395940	Method for producing perhalogenated cyclopentene The invention relates to a method for producing a first perhalogenated cyclopentene represented by the general formula: C5 ClB F8-B where B is an integer of from 0 to 7. The method includes a step of (a) fluorinating a sec...	05/28/2002
6211421	Preparation of 1,1,1-trifluoropropene An uncatalyzed liquid phase process is provided for producing 1,1,1-trifluoropropene via the fluorination of 1,1,3-trichloro-1-propene....	04/03/2001
6211420	Process for the preparation of fluorinated olefin In a process for preparing a fluorinated olefin having a carbon--carbon double bond, the carbon atoms of which have a fluorine atom, by reacting a halogenated olefin having at least one carbon--carbon double bond, a carbon atom or the carbon atoms of whic...	04/03/2001
6166274	Catalyzed liquid phase fluorination of 1230za A liquid phase process is provided for the preparation of 1233zd with reduced oligomer formation via the fluorination of 1230za with HF in the presence of a catalyst selected from TFA and triflic acid. The 1233zd is a known intermediate useful for prepari...	12/26/2000
5969197	Process for the preparation of chloro-fluoro-butenes Avoiding hexachlorobutadiene as the starting material, 2-chloro- and 2,3-dichloro-1,1,1,4,4,4-hexafluoro-2-butene are prepared by reacting a chlorobutene derivative of the formula (I) Cl2 C.dbd.CH-X (I) in which X represents CCl.dbd.CCl2 ...	10/19/1999
5919993	Method for preparing halogenated butene and butane At least one halogenated compound selected from the group consisting of 1,1,1,4,4,4-hexafluoro-2,3-dichlorobutane, 1,1,1,4,4,4-hexafluoro-2-chloro-2-butene, 1,1,1,2,4,4,4-heptafluoro-2-butene and 1,1,1,2,2,4,4,4-octafluorobutane, is prepared by react...	07/06/1999
5877359	Uncatalyzed liquid phase fluorination of 1230ZA An uncatalyzed liquid phase process is provided for the preparation of oligomer free 1233zd via the fluorination of 1230za with a high molar excess of HF. The 1233zd is a known intermediate useful for preparing 245fa....	03/02/1999
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
5714655	Process of manufacturing 1,1,1,3,3-pentafluoropropane, process of manufacturing 2,2,3-trichloro 1,1,1,3,3-pentafluoropropane and process of manufacturing 2,3,3-trichloro-1,1,1-trifluoropropene 2,2,3-trichloro-1,1,1,3,3-pentafluoropropane is used as a raw material, to which not less than 4.5 equivalent parts of hydrogen are added to effect a hydrogenation reaction in the presence of a noble metal catalyst, particularly a palladium catalyst, by t...	02/03/1998
5345016	Manufacture of 1,1,1,2-tetrafluoroethane This invention provides an improved process for the manufacture of 1,1,1,2-tetrafluoroethane by the reaction of HF and trichloroethylene in the presence of a catalyst to form a mixture comprising 2-chloro-1,1,1-trifluoroethane and 1,1,1,2-tetrafluoroethan...	09/06/1994
5334788	Reaction of substrate compounds with fluorine in an eductor Substrate compounds are reacted by passing them through an eductor with fluorine gas optionally in the presence of a liquid medium and preferably in a loop reactor with cooling means thereby providing rapid but controlled reaction suitable for industrial ...	08/02/1994
5233105	Process for halogen-fluorine exchange in organic compounds and catalysts for this process Bismuth/alkaline earth metal catalysts which contain 0.005-0.8 g-atom of bismuth per mol of the alkaline earth metal compound employed and can furthermore contain promoters and/or inert additives, and lanthanide catalysts with or without catalyst supports...	08/03/1993
5210340	Preparation of polyfluorobutenes 1,1,1,2,4,4,4-Heptafluoro-2-butene and 2-chloro-1,1,1,4,4,4-hexafluoro-2-butene 1,V5VjV9are prepared simultaneously by reacting hexachlorobutadiene with hydrogen fluoride with the addition of catalytic amounts of titanium halide, antimony trihalide a...	05/11/1993
5185482	Manufacture of 1,1,1,2-tetrafluoroethane This invention provides an improved process for the manufacture of 1,1,1,2-tetrafluoroethane by the reaction of HF and trichloroethylene in the presence of a catalyst to form a mixture comprising 2-chloro-1,1,1-trifluoroethane and 1,1,1,2-tetrafluoroethan...	02/09/1993
5180861	Process for the preparation of polychloro-fluoro-cyclo-pentenes Polychloro-fluoro-cyclopentenes can be prepared by catalytic reaction of hexachlorocyclopentadiene with hydrogen fluoride in the gas phase with the addition of chlorine....	01/19/1993
5177275	Reaction of substrate compounds with fluorine in an eductor Substrate compounds are reacted by passing them through an eductor with fluorine gas optionally in the presence of a liquid medium and preferably in a loop reactor with cooling means thereby providing rapid but controlled reaction suitable for industrial ...	01/05/1993
5146019	Preparation of polyfluorobutenes 1,1,1,2,4,4,4-Heptafluoro-2-butene and 2-chloro-1,1,1,4,4,4,-hexafluoro-2-butene are prepared simultaneously by reacting hexachlorobutadiene with hydrogen fluoride with the addition of catalytic amounts of titanium halide, antimony trihalide and/or antoim...	09/08/1992
5045634	Fluorination of haloolefins A process for fluorination by contacting a haloolefin with molten alkali metal acid fluoride to provide a fluorinated saturated or unsaturated hydrocarbon having at least one more fluorine than the starting haloolefin....	09/03/1991
4837369	Process for the preparation of 3-fluoro-2-(fluoromethyl)-propene 3-Fluoro-2-(fluoromethyl)-propene is prepared in a simple manner and in good yields by reacting 3-chloro-2-(chloromethyl)-propene with a fluorinating agent. The present invention also relates to 3-fluoro-2-(chloromethyl)-propene, an intermediate product i...	06/06/1989
4827055	Process for preparing vinylidene fluoride by the direct fluorination of vinylidene chloride Vinylidene fluoride is produced by the gaseous phase reaction of vinylidene chloride with hydrofluoric acid at a temperature of from about 400° to 700° C. in the presence of oxygen and a catalyst containing AlF3 either alone or in combination...	05/02/1989
4814522	Catalytic fluoroolefin transhalogenations Catalyzed halogen exchange between perhaloolefins to form products of the formulas: and wherein R1, R2, R3, R5, Rhu 6l , and R7 are individually selected from the group F, Cl, Br, C1 to C4	03/21/1989
4680406	Process for fluorinating halogenated organo-compounds A novel apparatus and a process for fluorinating organic compounds from halogen-containing organic compounds is disclosed....	07/14/1987
4465786	Catalyst composition for the preparation of 3,3,3-trifluoropropene A catalyst composition useful in preparing 3,3,3-trifluoropropene by the reaction of hydrogen fluoride gas with a halogenated hydrocarbon is provided. A novel catalyst is prepared by simultaneous fluorination of chromium and aluminum oxides. This or conve...	08/14/1984
4438088	Preparation of antimony trifluorodichloride and fluorination of fluorinatable hydrocarbons and halocarbons therewith The invention disclosed herein is a method for preparing antimony trifluorodichloride whereby antimony trifluoride is dispersed in a liquid organic medium to form a slurry and contacted with chlorine. The invention further comprises a process for fluorina...	03/20/1984
4220608	Preparation of 3,3,3-trifluoropropene-1 Process for preparing 3,3,3-trifluoropropene-1 by contacting and reacting at least one of 1,1,1,3-tetrachloropropane, 1,1,3-trichloropropene-1 and 3,3,3-trichloropropene-1 and HF, under autogenous pressure, at 140°-250° C., in the presence of at least a...	09/02/1980
4147733	Fluorination of chlorinated hydrocarbons Chlorine atoms in chlorinated lower aliphatic hydrocarbons are replaced by fluorine in the vapor phase reaction of the chlorinated hydrocarbons with aqueous HF at 275° C.- 425° C. in the presence of a metal fluoride catalyst, particularly where the meta...	04/03/1979
4110407	Preparation of 1-chloro-2-trifluoromethyl-3,3,3-trifluoropropene from isobutane Isobutane is catalytically converted to 1-chloro-2-trifluoromethyl-3,3,3-trifluoropropene [(CF3)2 C .dbd. CHCl] in a dehydro/chlorofluorination reaction zone by passing a mixture of anhydrous hydrogen fluoride, chlorine and the isobu...	08/29/1978
3965201	Fluorination of hexachlorobutadiene Hexachlorobutadiene is fluorinated with hydrogen fluoride in the presence of a fluorinated alumina catalyst to yield 2,3-dichlorohexafluorobutene-2 (butene-26)....	06/22/1976

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Class 570/160 - Substituting fluorine for a different halogen