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| Number | Title | Issue Date |
| 8178466 | Dehydrochlorination of hydrochlorofluorocarbons using pre-treated activated carbon catalysts The present disclosure provides methods for pre-treating activated carbon before it is used in a dehydrochlorination process. The methods can comprise mixing the activated carbon with an acid, an oxidizing agent in a liquid phase, or an oxidizing agent in a gas phas... | 05/15/2012 |
| 8168837 | Process for separating hydrogen fluoride from organic feedstocks Provided is a process for purifying an organic feedstock comprising (a) distilling a raw organic feedstock comprising hydrogen fluoride, 2-chloro-1,1,1,2-tetrafluoropropane, and 2-chloro-3,3,3-trifluoropropene to produce a first distillate stream comprising an azeot... | 05/01/2012 |
| 8158549 | Catalysts for fluoroolefins hydrogenation A support of metal oxyfluoride or metal halide for a metal-based hydrogenation catalyst useful in hydrogenating fluoroolefins is provided. ... | 04/17/2012 |
| 8119845 | Method for producing 2-chloro-3,3,3,-trifluoropropene (HCFC-1233xf) The present invention relates to an improved method for manufacturing 2-chloro-3,3,3,-trifluoropropene (HCFC-1233xf) by reacting 1,1,2,3-tetrachloropropene, 1,1,1,2,3-pentachloropropane, and/or 2,3,3,3-tetrachloropropene with hydrogen fluoride, in a vapor phase reac... | 02/21/2012 |
| 8119557 | Method for making catalyst compositions of alkali metal halide-doped bivalent metal fluorides and process for making fluorinated olefins There is provided methods for making a catalyst composition represented by the formula MX/M′F2 wherein MX is an alkali metal halide; M is an alkali metal ion selected from the group consisting of Li+, Na+, K+, Rb+ | 02/21/2012 |
| 8114308 | Azeotrope-like composition of 2,3-dichloro-3,3-difluoropropene (HCFO-1232xf) and hydrogen fluoride (HF) Provided are azeotropic and azeotrope-like compositions of 2,3-dichloro-3,3-difluoropropene (HCFO-1232xf) and hydrogen fluoride (HF). Such azeotropic and azeotrope-like compositions are useful as intermediates in the production of 2,3,3,3-tetrafluoropropene (HFO-123... | 02/14/2012 |
| 8084653 | Method for producing fluorinated organic compounds Disclosed are processes for the production of fluorinated olefins, preferably adapted to commercialization of CF3CF═CH2 (1234yf). Three steps may be used in preferred embodiments in which a feedstock such as CCl2═CClCH2 | 12/27/2011 |
| 8075797 | Azeotrope-like compositions of pentafluoropropane, chlorotrifluoropropene, and hydrogen fluoride The invention is directed to a ternary azeotrope-like mixture consisting essentially of effective amounts of 1,1,1,3,3-pentafluoropropane, 1-chloro-3,3,3-trifluoropropene, and hydrogen fluoride. ... | 12/13/2011 |
| 8071826 | Process for the preparation of 2,3,3,3-tetrafluoropropene (HFO-1234yf) A process for the preparation of 2,3,3,3-tetrafluoropropene (HFO-1234yf). HFO-1234yf is a refrigerant with low global warming potential. A process comprises a) reacting chlorotrifluoroethylene with a methyl halide to form an intermediate product stream; and b) react... | 12/06/2011 |
| 8071825 | Method for producing fluorinated organic compounds Disclosed are processes for the production of fluorinated olefins, preferably adapted to commercialization of CF3CF═CH2 (1234yf). In certain preferred embodiments the processes comprise first exposing a compound of Formula (IA) C(X)... | 12/06/2011 |
| 8070975 | Azeotrope-like composition of 2-chloro-1,1,1,2-tetrafluoropropane (HCFC-244bb) and hydrogen fluoride (HF) Provided are azeotropic and azeotrope-like compositions of 2-chloro-1,1,1,2-tetrafluoropropane (HCFC-244bb) and hydrogen fluoride (HF). Such azeotropic and azeotrope-like compositions are useful as intermediates in the production of 2,3,3,3-tetrafluoropropene (HFO-1... | 12/06/2011 |
| 8067649 | Method for producing fluorinated organic compounds Disclosed is a process for producing tetrafluoropropene comprising: (a) catalytically fluorinating at least one tetrafluoropropene in a first reactor to produce HCFO-1233xf; (b) reacting said HCFO-1233xf with hydrogen fluoride in a second reactor to produce HCFC-244... | 11/29/2011 |
| 8063257 | Method for producing 2,3,3,3-tetrafluoropropene A method for preparing 2,3,3,3-tetrafluoropropene comprising contacting a reactant comprising CCl2═CFCH2Cl with a fluorinating agent, such as HF, under conditions effective to produce a reaction product comprising CF3CF═CH2 | 11/22/2011 |
| 8058486 | Integrated process to produce 2,3,3,3-tetrafluoropropene A method for preparing 2,3,3,3-tetrafluoroprop-1-ene comprising (a) providing a starting composition comprising at least one compound having a structure selected from Formulae I, II and III: CX2═CCl—CH2X (Formula I) ... | 11/15/2011 |
| 8053612 | Process for dehydrochlorinating 1,1,1,2-tetrafluoro-2-chloropropane to 2,3,3,3-tetrafluoropropene in the presence of an alkali metal-doped magnesium oxyfluoride catalyst and methods for making the catalyst A process for making a fluorinated olefin. The process has the step of dehydrochlorinating a hydrochlorofluorocarbon having at least one hydrogen atom and at least one chlorine atom on adjacent carbon atoms in the presence of a catalytically effective amount of a ca... | 11/08/2011 |
| 8044250 | Manufacture of 1,1,1,2,3,3-hexafluoropropane and 1,1,1,2-tetrafluoropropane via catalytic hydrogenation A process for producing hydrofluorocarbon compounds represented by the following formula: CF3CHFCHm+1Fn wherein m is 0 or 2; n is 0 or 2; and m+n=2. The process has the step of contacting... | 10/25/2011 |
| 8034984 | Process for producing fluoropropenes Dehydrohalogenation processes for the preparation of fluoropropenes from corresponding halopropanes, in which the fluoropropenes have the formula CF3CY═CXNHP, wherein X and Y are independently hydrogen or a halogen selected from fl... | 10/11/2011 |
| 8034251 | Azeotropic compositions of 2-chloro-3,3,3-trifluoropropene (HCFC-1233xf), 2-chloro-1,1,1,2-tetrafluoropropane (HCFC-244bb), and hydrogen fluoride (HF) Provided are ternary azeotropic and azeotrope-like compositions of 2-chloro-3,3,3-trifluoropropene (HCFO-1233xf), 2-chloro-1,1,1,2-tetrafluoropropane (HCFC-244bb), and hydrogen fluoride (HF). Such azeotropic and azeotrope-like compositions are useful as intermediate... | 10/11/2011 |
| 8013194 | Process for the manufacture of fluorinated olefins A method for producing 1,1,1,2-tetrafluoropropene and/or 1,1,1,2,3-pentafluoropropene using a single set of four unit operations, the unit operations being (1) hydrogenation of a starting material comprising hexafluoropropene and optionally recycled 1,1,1,2,3-pentaf... | 09/06/2011 |
| 8008243 | Azeotrope-like compositions of 1,1,2,3-tetrachloropropene and hydrogen fluoride An azeotrope-like composition consisting essentially of 1,1,2,3-tetrachloropropene and hydrogen fluoride is provided, as well as methods that involve such an azeotrope-like composition. ... | 08/30/2011 |
| 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 |
| 7902410 | Process for the manufacture of fluorinated alkanes A process for the production of fluorinated alkanes by contacting a feed stream containing a fluorinated olefin and a reducing agent, preferably with a first amount of catalyst to produce a fluorinated alkane, at a first conversion level, wherein a first effluent st... | 03/08/2011 |
| 7884254 | Dehydrochlorination of hydrochlorofluorocarbons using pre-treated activated carbon catalysts The present disclosure provides methods for pre-treating activated carbon before it is used in a dehydrochlorination process. The methods can comprise mixing the activated carbon with an acid, an oxidizing agent in a liquid phase, or an oxidizing agent in a gas phas... | 02/08/2011 |
| 7803973 | Process for producing fluoropropenes Dehydrohalogenation processes for the preparation of fluoropropenes from corresponding halopropanes, in which the fluoropropenes have the formula CF3CY═CXNHP, wherein X and Y are independently hydrogen or a halogen selected from fl... | 09/28/2010 |
| 7803890 | Fluorocopolymers A process for the preparation of a fluoroolefin polymer, including the step of: contacting in a reaction zone: an initiator; CF3CF═CH2, and optionally, at l... | 09/28/2010 |
| 7803283 | Azeotrope-like compositions of 2-chloro-3,3,3-trifluoropropene (HCFC-1233xf) and 2-chloro-1,1,1,2-tetrafluoropropane (HCFC-244bb) Provided are azeotropic and azeotrope-like compositions of 2-chloro-3,3,3-trifluoropropene (HCFO-1233xf) and 2-chloro-1,1,1,2-tetrafluoropropane (HCFC-244bb). Such azeotropic and azeotrope-like compositions are useful as intermediates in the production of 2,3,3,3-te... | 09/28/2010 |
| 7795480 | Method for producing 2-chloro-3,3,3,-trifluoropropene (HCFC-1233xf) The present invention relates to an improved method for manufacturing 2-chloro-3,3,3,-trifluoropropene (HCFC-1233xf) by reacting 1,1,2,3-tetrachloropropene, 1,1,1,2,3-pentachloropropane, and/or 2,3,3,3-tetrachloropropene with hydrogen fluoride, in a vapor phase reac... | 09/14/2010 |
| 7794618 | Azeotrope-like compositions of pentafluoropropene and 1,1,1,2,2-pentafluoropropane The present invention provides azeotrope-like compositions of 1,1,1,2,2-pentafluoropropane (HFC-245cb) with either the Z isomer of 1,1,1,2,3-pentafluoropropene (HFO-1225yeZ) alone or with mixtures of the E and Z isomers of 1,1,1,2,3-pentafluoropropene (HFO-1225 yeZ ... | 09/14/2010 |
| 7781626 | 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... | 08/24/2010 |
| 7736529 | Azeotrope-like compositions containing sulfur hexafluoride and uses thereof Provided are novel azeotrope-like compositions of SF6 and N2O, as well as methods of using the same. Also provided are methods of using SF6 compositions, including azeotrope-like compositions, including a method for suppressing an el... | 06/15/2010 |
| 7731911 | Fluorination reactor A fluorination reactor having a reaction zone, an inlet for supplying an organic compound to be fluorinated to the reaction zone, an inlet for supplying elemental fluorine to the reaction zone, and an outlet for recovering a fluorinated reaction product, wherein the... | 06/08/2010 |
| 7723552 | Process for making chlorotrifluoroethylene from 1,1,2-Trichlorotrifluoroethane A process for the making chlorotrifluoroethylene. The process has the step of reacting 1,1,2-trichlorotrifluoroethane with a reducing metal in the presence of a polar aprotic solvent under conditions sufficient to form chlorotrifluoroethylene. ... | 05/25/2010 |
| 7714177 | Processes for synthesis of 1,3,3,3-tetrafluoropropene Disclosed is a process for the synthesis of 1,3,3,3-tetrafluoropropene comprising: a) reacting a compound of the formula (I) CHFX2 with a compound of formula (II) CH2═CF2 to produce a reaction product comprising a compound of formu... | 05/11/2010 |
| 7709691 | Process for geometric isomerization of halogenated olefins Disclosed are processes for the conversion of isomerizable halogenated C2-C6 olefins from one geometric form to a more preferred geometric form. Preferred process aspects comprise converting C2-C6 olefin in a cis-form to a trans-form comprising exposing the cis-form... | 05/04/2010 |
| 7700815 | Method for producing fluorinated organic compounds Disclosed is a method for producing fluorinated organic compounds, including petnafluoropropenes, which preferably comprises converting at least one compound of formula (I): CFnXmCFaXbCH2X (I) | 04/20/2010 |
| 7695635 | Azeotrope-like compositions of 1-chloro-3,3,3-trifluoropropene and methyl iodide An azeotropic or azeotrope-like composition comprising a mixture of methyl iodide, 1-chloro-3,3,3,-trifluoropropene, and optionally one or more of fluorocarbons and/or hydrofluorocarbons. The compositions are present as a gas, at temperatures of about 30° C. or bel... | 04/13/2010 |
| 7674939 | Method for producing fluorinated organic compounds Disclosed are methods for producing fluorinated organic compounds, including hydrofluoropropenes, which preferably comprises converting at least one compound of formula (I): CF3CHXCH2X (I) to at least one compound of fo... | 03/09/2010 |
| 7638660 | Integrated HFC trans-1234ze manufacture process An integrated process for the manufacture of HFO trans-1,3,3,3-tetrafluoropropene (HFO trans-1234ze) by first catalytically dehydrofluorinating 1,1,1,3,3-pentafluoropropane to thereby produce a mixture of cis-1,3,3,3-tetrafluoropropene, trans-1,3,3,3-tetrafluoroprop... | 12/29/2009 |
| 7608574 | Azeotropic or azeotropic-like compositions of 1,1,1-trifuoroethane and 1-chloro-2,2,2-trifluoroethane Azeotropic or azeotropic-like compositions of 1,1,1-trifluoroethane (HFC-143a) and 1-chloro-2,2,2-trifluoroethane (R-133a). ... | 10/27/2009 |
| 7592494 | Process for the manufacture of 1,3,3,3-tetrafluoropropene The invention provides an economic process for the manufacture of 1,3,3,3-tetrafluoropropene (HFC-1234ze) by a two stage process. A hydrofluorination of 1-chloro-3,3,3-trifluoropropene (HCFC-1233zd) into 1-chloro-1,3,3,3-tetrafluoropropane (HCFC-244fa) and 1,1,1,3,3... | 09/22/2009 |
