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| Number | Title | Issue Date |
| 8163964 | Processes for producing pentafluoropropenes and certain azeotropes comprising HF and certain halopropenes of the formula CHClF A process is disclosed for making CF3CF═CHF or a mixture thereof with CF2═CFCHF2. The process involves (i) contacting CH2ClCF2CF3, and optionally CH2FCF2CClF2, in ... | 04/24/2012 |
| 8148586 | Catalytic production processes for making tetrafluoropropenes and pentafluoropropenes A process is disclosed for making CF3CF═CHF. The process involves contacting at least one hexafluoropropane selected from the group consisting of CF3CF2CH2F and CF3CHFCHF2 with a chromium oxyfluorid... | 04/03/2012 |
| 8143462 | Processes for the synthesis of 2-chloro-1,1,1,3,3,4,4,4-heptafluoro-2-butene and hexafluoro-2-butyne Disclosed is a process comprising reacting CF3CCl2CF2CF3 (CFC-318ma) with hydrogen in the presence of a dehalogenation catalyst to produce CF3CCl═CFCF3 (CFC-1317mx). Also disclosed is a process comp... | 03/27/2012 |
| 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 |
| 8115037 | Method for producing 1,3,3,3-tetrafluoropropene There is provided a method for producing 1,3,3,3-tetrafluoropropene. This method includes dehydrofluorinating 1,1,1,3,3-pentafluoropropane in gas phase in the presence of a zirconium compound-carried catalyst in which a zirconium compound is carried on a metal oxide... | 02/14/2012 |
| 8053611 | Process or the preparation of 1,1,1,3,3,3-hexafluoro-propane and at least one of 1,1,1,2,3,3-hexafluoropropane, hexafluoropropane and 1,1,1,2,3,3,3-heptafluoropropane A process is disclosed for the manufacture of 1,1,1,3,3,3-hexafluoropropane and 1,1,1,2,3,3-hexafluoropropane, hexafluoropropene and/or 1,1,1,2,3,3,3-heptafluoropropane. The process involves (a) reacting HF, Cl2, and at least one halopropene of the formul... | 11/08/2011 |
| 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 |
| 8017817 | Process for the preparation of 1,1,3,3,3-pentafluoropropene and 1,2,3,3,3-pentafluoropropene A process for the manufacture of CF3CH═CF2 and CF3CF═CHF is disclosed. The process involves (a) reacting HF and chlorine and at least one halopropene of the formula CX3CCI═CCIX (where each X is independently F or Cl)... | 09/13/2011 |
| 7982073 | Catalytic production processes for making tetrafluoropropenes and pentafluoropropenes A process is disclosed for making CF3CF═CHF. The process involves contacting at least one hexafluoropropane selected from the group consisting of CF3CF2CH2F and CF3CHFCHF2 with a chromium oxyfluorid... | 07/19/2011 |
| 7973202 | Method for producing fluorine-containing olefin The present invention aims to reduce an amount of by-products generated in a reaction step for obtaining fluorine-containing olefin, and thereby to obtain fluorine-containing olefin as a target substance with a higher selectivity than that in the conventional method... | 07/05/2011 |
| 7951981 | Process for producing perfluoroalkyne compound A process for producing a perfluoroalkyne compound includes an addition reaction step of adding Cl2, Br2, or I2 to a compound shown by the formula (1) CH3C≡CR1 to obtain a compound shown by the formula (2) CH | 05/31/2011 |
| 7880040 | Method for producing fluorinated organic compounds Disclosed is a method for producing fluorinated organic compounds, including hydrofluoropropenes, which preferably comprises converting at least one compound of formula (I): CF3CFnCHmXa-m (I) to at... | 02/01/2011 |
| 7829747 | Process for dehydrofluorination of 3-chloro-1,1,1,3-tetrafluoropropane to 1-chloro-3,3,3-trifluoropropene A process for making 1-chloro-3,3,3-trifluoropropene. The process has the following step: dehydrofluorinating 3-chloro-1,1,1,3-tetrafluoropropane under conditions sufficient to effect dehydrofluorination in the presence of a catalyst. Preferred catalysts are selecte... | 11/09/2010 |
| 7812202 | Process for producing hexafluoro-1,3-butadiene Disclosed is a process for producing hexafluoro-1,3-butadiene, which is used for an etching gas capable of being used in fine processing for semiconductors, safely in industrialization and at low cost economically. Specifically disclosed is a process for producing h... | 10/12/2010 |
| 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 |
| 7803974 | Hydrogenation processes Disclosed are heterogeneous processes (i) for the hydrogenation of a compound containing at least one unsaturated carbon-carbon bond, and (ii) for the hydro-dehalogenation of a compound containing at least one C—Cl, C—Br or C—I bond. The processes comprise rea... | 09/28/2010 |
| 7786333 | Process for the manufacture of fluorinated olefins A process for the production of fluorinated olefins, preferably fluorinated propenes, by contacting a feed stream containing a fluorinated olefin and hydrogen with a first amount of catalyst to produce the hydrofluorocarbon, wherein a first exit stream contains unre... | 08/31/2010 |
| 7687670 | Coproduction of hydrofluoroolefins Disclosed is a process for the co-manufacture of the hydrofluoroolefins HFC-1225ye and HFC-1234yf. The process comprises contacting a blend of 1,1,1,2,3,3-hexafluoropropane and 1,1,1,2,3-pentafluoropropane at a temperature of from about 200° C. to about 500° C. wi... | 03/30/2010 |
| 7678949 | Process for the preparation of 1,3,3,3-tetrafluoropropene and/or 2,3,3,3-tetrafluoropropene A process for the manufacture of CF3CH═CHF and/or CF3CF═CH2 is disclosed. The process involves (a) reacting HF and chlorine and at least one halopropene of the formula CX3CCI═CCIX (where each X is independently F or ... | 03/16/2010 |
| 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 |
| 7663007 | Process for the preparation of 1,3,3,3-tetrafluoropropene and/or 1,1,3,3,3-pentafluoropropene A process for the manufacture of CF3CH═CHF and/or CF3CH═CF2 is disclosed. The process involves (a) reacting HF and at least one halopropene of the formula CX3CCI═CCIX (where each X is independently F or CI) to produc... | 02/16/2010 |
| 7560602 | Process for manufacture of fluorinated olefins A process for the production of fluorinated olefins, preferably fluorinated propenes, by contacting a feed stream containing a fluorinated olefin and hydrogen with a first amount of catalyst to produce the hydrofluorocarbon, wherein a first exit stream contains unre... | 07/14/2009 |
| 7504547 | Method of preparing perfluoroalkadiene Disclosed herein is a method of preparing a perfluoroalkadiene. A dihaloperfluorocarbon used as a starting material is added dropwise to a nonpolar organic solvent, a metal powder and an organic metal compound. The dihaloperfluorocarbon is slowly added dropwise in a... | 03/17/2009 |
| 7482499 | Fluorobutene derivatives and process for producing same The present invention provides novel compounds, 2,4,4,4-tetrafluoro-1-butene and (E)- and (Z)-1,1,1,3-tetrafluoro-2 butenes. Furthermore, the present invention provides the following novel first and second processes for producing 2,4,4,4-tetrafluoro-1-butene, (E)- a... | 01/27/2009 |
| 7470827 | Composition for the vapor phase dehydrohalogenation of 1,1,2-trihaloethane to 1,1-dihaloethylene and methods for preparing and using such composition Described are compositions adapted to catalyze the vapor phase dehydrohalogenation of 1,1,2-trihaloethane to 1,1-dihaloethylene, e.g., 1,1,2-trichloroethane to vinylidene chloride. These materials include activated carbon and at least one benzimidazole-containing ma... | 12/30/2008 |
| 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 |
| 7358405 | Dehalogenation process A process for obtaining vinyl compounds by dehalogenation of halofluorinated compounds with aromatic substituents, having formula: T-Ar—(O)y—CFX′—CF2X″ (I) wherein: X′=F, C... | 04/15/2008 |
| 7348461 | Processes for halogenating compounds Methods and materials are provided for the production of essentially isomerically pure perhalogenated and partially halogenated compounds. One embodiment of the present invention provides a process for the production of essentially isomerically pure CFC-216aa. Other... | 03/25/2008 |
| 7345209 | Processes for synthesis of 1,3,3,3-tetrafluoropropene Disclosed is a process for the synthesis of 1,3,3,3-tetrafluoropropene that comprises, in one preferred embodiment, providing a compound of the formula CF3CH2CHFX, wherein X is a selected from the group consisting of chlorine, bromine and iodin... | 03/18/2008 |
| 7335805 | Processes for purifying reaction products and processes for separating chlorofluorinated compounds Methods and materials are provided for the production of essentially isomerically pure perhalogenated and partially halogenated compounds. One embodiment of the present invention provides a process for the production of essentially isomerically pure CFC-216aa. Other... | 02/26/2008 |
| 7332635 | Processes for purifying chlorofluorinated compounds Methods and materials are provided for the production of essentially isomerically pure perhalogenated and partially halogenated compounds. One embodiment of the present invention provides a process for the production of essentially isomerically pure CFC-216aa. Other... | 02/19/2008 |
| 7329786 | Processes for producing CFCFHCF Methods and materials are provided for the production of essentially isomerically pure perhalogenated and partially halogenated compounds. One embodiment of the present invention provides a process for the production of essentially isomerically pure CFC-216aa. Other... | 02/12/2008 |
| 7312367 | Method of making 1,1,3,3,3-pentafluoropropene The invention provides an economic process for the manufacture of the hydrofluorocarbon 1,1,3,3,3-pentafluoropropene (HFC-1225zc). HFC-1225zc can be made from the dehydrochlorination of 1-chloro-1,1,3,3,3-pentafluoropropane (HCFC-235fa). Alternatively, HFC-1225zc ca... | 12/25/2007 |
| 7279451 | Compositions containing fluorine substituted olefins The use to e of tetrafluoropropenes, particularly (HFO-1234) in a variety of applications, including refrigeration equipment, is disclosed. These materials are generally useful as refrigerants for heating and cooling, as blowing agents, as aerosol propellants, as so... | 10/09/2007 |
| 7271301 | Synthesis of perfluoroolefins A gold-lined pyrolysis reactor is used to pyrolyze compounds to form fluoroolefins like tetrafluoroethylene and hexafluoropropylene in high yield, with minimum to no formation of perfluoroisobutylene, chlorotrifluoroethylene, coke, salts, or polymer. ... | 09/18/2007 |
| 7268261 | Production processes Methods and materials are disclosed for the recovery of valuable hydrofluorocarbons and subsequent conversion to environmentally inert compounds. More specifically methods and materials are provided for recovering hydrofluorocarbons such as HFC-227, HFC-236, HFC-245... | 09/11/2007 |
| 7250540 | 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... | 07/31/2007 |
| 7241928 | 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 CAR1R2CBR3R4 (where A, B, R1, R2, R3, and R4 are as defined in the specification) whic... | 07/10/2007 |
| 7230146 | 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... | 06/12/2007 |
