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WO/2010/029240A1 |
One subject of the invention is a process for the preparation of 2,3,3,3-tetrafluoro-1-propene which comprises the following stages: (i) hydrogenation of hexafluoropropylene to give 1,1,1,2,3,3-hexafluoropropane; (ii) dehydrofluorinati...
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WO/2010/026383A2 |
A new chromium-containing fluorination catalyst is described. The catalyst comprises an amount of zinc that promotes activity and from 0.1 to 8.0 % by weight of the chromium in the catalyst based on the total weight of the chromium is pr...
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WO/2010/026382A2 |
A new chromium-containing fluorination catalyst is described. The catalyst comprises an amount of zinc that promotes activity. The zinc is contained in aggregates which have a size across their largest dimension of up to 1 micron. The ag...
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WO/2010/025033A1 |
Disclosed is process for the recovery of HFC-43-10mee from a mixture comprising hydrogen fluoride and HFC-43-10mee, comprising feeding the composition comprising hydrogen fluoride and HFC-43-10mee to a distillation column, subjecting sai...
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WO/2010/016401A2 |
The present invention provides a process for preparing 2,3,3,3-tetrafluoropropene represented by CF3CF=CH2 and 1,3,3,3-tetrafluoropropene represented by CF3CH=CHF, in which 3,3,3-trifluoropropyne represented by the chemical formula CF3CH...
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WO/2010/013795A1 |
The present invention provides a process for producing 2,3,3,3-tetrafluoropropene including the following reaction steps: (i) reducing a halogenated fluoropropane represented by formula (1): ACF2CF2CH2FyAz, wherein A is Cl, Br, or I; x i...
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WO/2010/001774A1 |
Disclosed is a process for producing 1,2,3,4-tetrachlorohexafluorobutane on an industrial scale, at low cost, with high efficiency, and at high purity. The process for producing 1,2,3,4-tetrachlorohexafluorobutane is characterized by co...
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WO/2009/150091A1 |
The invention pertains to a process for the manufacture of a perfluorovinylether by hydrodehalogenation of a halofluoroether (HFE) having general formula (I-A) or (I-B): RfO-CRf'X-CRf''Rf'''X' (I-A) wherein Rf represents a C1-C6 perfluor...
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WO/2009/148191A1 |
The present invention provides a process for producing a compound represented by general formula (I): wherein X, Y and Z are same or different, and each represent H, F, Cl or an alkyl group, provided that the alkyl group and F are each n...
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WO/2009/147101A1 |
Process for the manufacture of at least one ethylene derivative compound starting from a low value residual gas, preferably a ROG, according to which : a) the low value residual gas is subjected to a series of treatment steps in a low va...
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WO/2009/147100A1 |
Process for the manufacture of 1,2-dichlorethane and of at least one ethylene derivative compound which is different from 1,2-dichloroethane starting with a hydrocarbon source according to which : a) the hydrocarbon source is subjected t...
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WO/2009/147083A1 |
Process for the manufacture of at least one ethylene derivative compound starting with a hydrocarbon source according to which : a) the hydrocarbon source is subjected to a simplified cracking which produces a mixture of products contain...
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WO/2009/139352A1 |
Disclosed is a method for efficiently using expensive fluorine gas to industrially, inexpensively, and efficiently manufacture 1,2,3,4‑tetrachlorohexafluorobutane, and a method with which 1,2,3,4‑tetrachlorohexafluorobutane can be st...
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WO/2009/125200A2 |
The invention provides a process for preparing 1,1,1-trifluoro-2,3-dichloropropane (243db), which process comprises contacting 3,3,3-trifluoropropene (1243zf) with chlorine in the presence of a catalyst, wherein the catalyst comprises ac...
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WO/2009/125201A2 |
The invention provides a process for the preparation of 2,3,3,3-tetrafluoropropene (1234yf) comprising (a) contacting 1,1,1-trifluoro-2,3-difluoropropane (243db) with hydrogen fluoride (HF) in the presence of a zinc/chromia catalyst to p...
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WO/2009/123082A1 |
A novel process for producing a fluoroalkyl iodide telomer is provided. By using the process, a fluoroalkyl iodide telomer having a desired chain length can be efficiently obtained. A fluoroalkyl iodide represented by the general formula...
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WO/2009/114398A1 |
This invention relates to the use of chloro-trifluoropropenes as refrigerants in negative-pressure liquid chillers and methods of replacing an existing refrigerant in a chiller with chloro-trifluoropropenes. The chloro-trifluoropropenes,...
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WO/2009/106479A1 |
Process for the manufacture of at least one ethylene derivative compound starting from a low value residual gas, preferably a ROG, according to which : a) the low value residual gas is subjected to a series of treatment steps in a low va...
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WO/2009/093047A2 |
A method of providing a blend of tetra-and/or pentafluoroalkanes comprising hydrogenating a pentafluoropropene.
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WO/2009/087067A1 |
Process for preparing perfluoro-1,3-butadiene, comprising the following steps : A) preparation of fluoro-halo-butanes of formula : CF2 YI-CFYIICFYIICF2 YI (V) in which YI and YII which may be identical or different, may be H, C1 or Br, w...
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WO/2009/084703A1 |
Using hexafluoropropene (HFP) as a raw material, 1,1,1,2-tetrafluoropropene (HFC-1234yf) is obtained by hydrogenation, dehydrofluorination and distillation. In a series of reactions comprised of hydrogenating HFP to obtain 1,1,1,2,3,3-he...
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WO/2009/078234A1 |
Disclosed is a method for producing pentafluoroethane, wherein pentafluoroethane (HFC-125) is obtained by reacting tetrachloroethylene (PCE) with HF in a gas phase in the presence of a catalyst, while achieving high PCE conversion rate a...
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WO/2009/076260A2 |
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-...
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WO/2009/071531A1 |
The invention relates to a method for oxychlorinating ethylene to 1,2-dichlorethane in a gas circulation method using reduced hydrogen levels, having the following steps: (A) introducing ethylene, oxygen, and hydrogen chloride as reactan...
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WO/2009/064939A2 |
A process for producing hydrofluorocarbon compounds represented by the following formula: CF3CHFCHm+1Fn wherein m is 0, 1, or 2; n is 0, 1, or 2; and m + n = 2. The process has the step of contacting, i.e., reacting, hydrogen with a prec...
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WO/2009/052064A2 |
Disclosed is a process for the synthesis of fluorinated olefins, and in particularly preferred embodiments tetrafluorinated olefins having F on an unsaturated, non-terminal carbon, such as 2,3,3,3-tetrafluoropropene. The preferred proces...
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WO/2009/009413A9 |
Disclosed are heat transfer compositions, and methods of using and selecting heat transfer compositions, in which the composition comprises a first component comprising difluoromethane (R-32), and at least one second component selected f...
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WO/2009/049144A2 |
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 electr...
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WO/2009/048732A1 |
Provided is a method for selectively preparing 2-chloropentafluoropropene comprising catalytic dechlorination of 1,2,2-trichloro-1,1,3,3,3-pentafluoropropane in the presence of hydrogen and a noble metal catalyst. Also provided is method...
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WO/2009/042344A1 |
Methods are provided for removing impurities from compositions comprising alkyl bromide. Such methods comprise combining such composition with at least one nonvolatile epoxide during distillation to purify the alkyl bromide. Ultra pure a...
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WO/2009/040367A1 |
Process for the preparation of a fluorine containing organic molecule, which process comprises the steps of a) preparation of a compound of the formula (I) wherein R1, R2 and R3 are independently hydrogen, fluor or an optionally fluorina...
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WO/2009/035110A1 |
This invention provides a process for producing a fluoroalkyl iodide which can realize high selectivity for a fluoroalkyl iodide (telomer) having a desired degree of polymerization and, at the same time, can realize high productivity. In...
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WO/2009/034859A1 |
Disclosed is a terminally iodized polyfluoroalkane represented by the following general formula (I). CnF2n+1(CHXCFY)s+p(CF2CF2)t+rI (I) (In the formula, X and Y each represents a hydrogen atom or a fluorine atom, provided that when Y is ...
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WO/2009/031719A1 |
The present invention relates to a method for preparing chlorinated compounds from saturated hydrocarbon. More particularly, the present invention relates to the method for preparing chlorinated compounds by conducting alternately an oxi...
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WO/2009/026526A1 |
A method for producing fluorinated organic compounds, including hydrofluoropropenes, which preferably comprises converting at least one compound of formula (I): to at least one compound of formula (II): where X1 is Cl, Br or I, each X2 i...
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WO/2009/018561A2 |
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)2=CC1...
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WO/2009/013198A1 |
The invention consequently relates, in one aspect, to a process for obtaining a hydrofluoroalkane comprising at least two carbon atoms, which is purified of unsaturated organic impurities, according to which the hydrofluoroalkane contain...
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WO/2009/007302A2 |
The invention concerns a process for purifying α,ω-diiodoρerfluorinatcd compounds of formula 1-(CF2CF2Y)m-I comprising contacting an impure α,ω-diiodopcrfluorinated compound with a suitable sequestering agent, with formation of a re...
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WO/2008/155394A2 |
The invention relates to a method for producing 1,2-dichloroethane, wherein a) ethene, hydrogen chloride, and oxygen are fed into an oxychloridation reactor and converted to a product gas flow containing 1,2-dicloroethane, non-converted ...
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WO/2008/153390A1 |
Metathesis process for a mixture of chlorinated hydrocarbons, which process comprises reacting a mixture of two or more different chlorinated hydrocarbons in the presence of at least one halogenide of a lanthanide, present on carbon as s...
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WO/2008/153738A2 |
This invention relates to a process for separating 1,1,2,2-tetrafluoroethane or 1,1,1,2-tetrafluoroethane from a mixture comprising both 1,1,1,2-tetrafluoroethane and 1,1,2,2-tetrafluoroethane wherein at least one ionic liquid is used to...
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WO/2008/133086A1 |
Disclosed is a method for producing a fluorine-containing compound such as 1,2,3,4-tetrachlorohexafluorobutane, which is characterized in that a halogenated hydrocarbon compound such as 1,2,3,4-tetrachlorobutane is brought into contact w...
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WO/2008/130864A1 |
Methods and systems for producing halocarbon with an inorganic fluoride (e.g., germanium tetrafluoride (GeF4)) are disclosed herein.
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WO/2008/130860A1 |
Methods and systems for producing chlorofluorocarbon with an inorganic fluoride (e.g., germanium tetrafluoride (GeF4)) are disclosed herein.
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WO/2008/122611A1 |
A process for the manufacture of a fluorinated organic compound of formula R-F wherein R is an organic residue, which comprises reacting a starting material of general formula R-X wherein X is a leaving group with SO2F2. Addition of an a...
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WO/2008/120652A1 |
Disclosed is a method for producing a chlorinated and fluorinated compound, which is characterized by conducing the reaction for adding a chlorine atom to a unsaturated carbon-carbon bond in a hydrogenated compound having the unsaturated...
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WO/2008/120642A1 |
Disclosed is a method for producing 1,2,3,4-tetrachlorohexafluorobutane, which is characterized in that 1,2,3,4-tetrachlorobutane is reacted with fluorine in the presence of a solvent containing hydrogen fluoride. The 1,2,3,4-tetrachloro...
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WO/2008/107578A1 |
The invention relates to a method for producing 1,1-difluoroethane. The invention more precisely relates to a method for producing 1,1-difluoroethane by the gaseous-phase fluorination of 1,2-dichloroethane (or D12 of the formula CH2CICH2...
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WO/2008/104690A1 |
The present invention relates to a method for producing methylene chloride. The invention more precisely relates to a single-step method for selectively obtaining methylene chloride from formol, optionally mixed with methanol.
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WO/2008/079265A1 |
A process for the synthesis of fluorinated olefins of the formula CF3CF=CHX, wherein X is F or H comprising contacting hexafluoropropene with hydrogen chloride in the vapor phase, in the presence of a catalyst, at a temperature in the ra...
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