US20090224207A1 - Azeotrope-Like Composition of 2-Chloro-3,3,3-Trifluoropropene (HCFC-1233xf) and Hydrogen Fluoride (HF) - Google Patents

Azeotrope-Like Composition of 2-Chloro-3,3,3-Trifluoropropene (HCFC-1233xf) and Hydrogen Fluoride (HF) Download PDF

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US20090224207A1
US20090224207A1 US12/396,672 US39667209A US2009224207A1 US 20090224207 A1 US20090224207 A1 US 20090224207A1 US 39667209 A US39667209 A US 39667209A US 2009224207 A1 US2009224207 A1 US 2009224207A1
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mole percent
trifluoropropene
chloro
hydrogen fluoride
composition
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US12/396,672
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Hang T. Pham
Daniel C. Merkel
Konstantin A. Pokrovski
Hsuehsung Tung
Rajiv R. Singh
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Honeywell International Inc
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Individual
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Priority to US12/396,672 priority Critical patent/US20090224207A1/en
Assigned to HONEYWELL INTERNATIONAL INC. reassignment HONEYWELL INTERNATIONAL INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: MERKEL, DANIEL C., PHAM, HANG T., POKROVSKI, KONSTANTIN A., SINGH, RAJIV R., TUNG, HSUEH SUNG
Priority to ES09154367.8T priority patent/ES2522624T5/es
Priority to EP09154367.8A priority patent/EP2098499B2/en
Priority to CN200910138740.0A priority patent/CN101607866B/zh
Priority to JP2009053570A priority patent/JP5430977B2/ja
Priority to MX2009002515A priority patent/MX2009002515A/es
Priority to KR1020090019136A priority patent/KR101594018B1/ko
Publication of US20090224207A1 publication Critical patent/US20090224207A1/en
Abandoned legal-status Critical Current

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    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C17/00—Preparation of halogenated hydrocarbons
    • C07C17/093—Preparation of halogenated hydrocarbons by replacement by halogens
    • C07C17/20—Preparation of halogenated hydrocarbons by replacement by halogens of halogen atoms by other halogen atoms
    • C07C17/202—Preparation of halogenated hydrocarbons by replacement by halogens of halogen atoms by other halogen atoms two or more compounds being involved in the reaction
    • C07C17/206—Preparation of halogenated hydrocarbons by replacement by halogens of halogen atoms by other halogen atoms two or more compounds being involved in the reaction the other compound being HX
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C17/00—Preparation of halogenated hydrocarbons
    • C07C17/38—Separation; Purification; Stabilisation; Use of additives
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C17/00—Preparation of halogenated hydrocarbons
    • C07C17/38—Separation; Purification; Stabilisation; Use of additives
    • C07C17/383—Separation; Purification; Stabilisation; Use of additives by distillation
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C21/00—Acyclic unsaturated compounds containing halogen atoms
    • C07C21/02—Acyclic unsaturated compounds containing halogen atoms containing carbon-to-carbon double bonds
    • C07C21/18—Acyclic unsaturated compounds containing halogen atoms containing carbon-to-carbon double bonds containing fluorine
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
    • C11D7/50—Solvents
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
    • C11D7/50—Solvents
    • C11D7/5036—Azeotropic mixtures containing halogenated solvents
    • C11D7/504—Azeotropic mixtures containing halogenated solvents all solvents being halogenated hydrocarbons
    • C11D7/5054—Mixtures of (hydro)chlorofluorocarbons and (hydro) fluorocarbons

Definitions

  • the present invention pertains to azeotropic and azeotrope-like compositions of 2-chloro-3,3,3-trifluoropropene (HCFO-1233xf) and hydrogen fluoride (HF). More particularly the invention pertains to such azeotropic and azeotrope-like compositions which are useful as intermediates in the production of 2,3,3,3-tetrafluoropropene (HFO-1234yf).
  • HCFO-1233xf 2-chloro-3,3,3-trifluoropropene
  • HF hydrogen fluoride
  • chlorofluorocarbons like trichlorofluoromethane and dichlorodifluoromethane have been used as refrigerants, blowing agents and diluents for gaseous sterilization.
  • chlorofluorocarbons like trichlorofluoromethane and dichlorodifluoromethane have been used as refrigerants, blowing agents and diluents for gaseous sterilization.
  • chlorofluorocarbons like trichlorofluoromethane and dichlorodifluoromethane have been used as refrigerants, blowing agents and diluents for gaseous sterilization.
  • chlorofluorocarbons like trichlorofluoromethane and dichlorodifluoromethane have been used as refrigerants, blowing agents and diluents for gaseous sterilization.
  • completely halogenated chlorofluorocarbons might be detrimental to the Earth's ozone layer. Therefore
  • HFC 2-chloro-3,3,3-trifluoropropene
  • HCFO-1233xf 2-chloro-3,3,3-trifluoropropene
  • HCFO-1233xf chlorofluorocarbons
  • trichlorofluoromethane as a blowing agent.
  • the production of HFC's, i.e. compounds containing only carbon, hydrogen and fluorine has been the subject of interest to provide environmentally desirable products for use as solvents, blowing agents, refrigerants, cleaning agents, aerosol propellants, heat transfer media, dielectrics, fire extinguishing compositions and power cycle working fluids.
  • HFC's fluorocarbons
  • hydrochlorofluorocarbons HCFC's
  • chlorofluorocarbons CFC's
  • HCFO-1233xf is an intermediate in the production of 2,3,3,3-tetrafluoropropene (HFO-1234yf) which is well known in the art as described in U.S. Applications 20070007488 and 20070197842, the specifications of which are incorporated herein by reference.
  • HFO-1234yf has been disclosed to be an effective refrigerant, heat transfer medium, propellant, foaming agent, blowing agent, gaseous dielectric, sterilant carrier, polymerization medium, particulate removal fluid, carrier fluid, buffing abrasive agent, displacement drying agent and power cycle working fluid.
  • HFO-1234yf 2-chloro-3,3,3-trifluoropropene (HCFO-1233xf) and hydrogen fluoride.
  • This intermediate once formed, may thereafter be separated into its component parts by known extraction techniques.
  • the azeotropic and azeotrope-like compositions find use not only as intermediates in the production of HFO-1234yf, but they are additionally useful as nonaqueous etchant mixtures for etching semiconductors in the electronics industry, as well as compositions for removing surface oxidation from metals.
  • an azeotropic or azeotrope-like composition of HCFO-1233xf and hydrogen fluoride is useful in separating a mixture of HCFO-1233xf and an impurity such as a halocarbon, for example, 1,1,1,2,3-pentachloropropane; 1,1,2,3-tetrachloropropene; 2,3,3,3-tetrafluoropropene; 2,3-dichloro-3,3-difluoropropene; 1,1,1,2,2-pentafluoropropane; or 1,2-dichloro-3,3,3-trifluoropropene.
  • a halocarbon for example, 1,1,1,2,3-pentachloropropane; 1,1,2,3-tetrachloropropene; 2,3,3,3-tetrafluoropropene; 2,3-dichloro-3,3-difluoropropene; 1,1,1,2,2-pentafluoropropane; or 1,
  • HF is added to form an azeotropic mixture of HCFO-1233xf and hydrogen fluoride, and then the impurity is removed from the azeotropic mixture, such as by distillation or other known means.
  • This binary azeotrope or azeotrope-like composition is then available for separation into its component parts.
  • the invention provides an azeotropic or azeotrope-like composition which consists essentially of from about 6.2 mole percent to about 59.9 mole percent hydrogen fluoride and from about 40.1 mole percent to about 93.8 mole percent 2-chloro-3,3,3-trifluoropropene.
  • the composition has a boiling point of from about 0° C. to about 61° C. at a pressure of from about 15 psia to about 107 psia.
  • the invention further provides an azeotropic or azeotrope-like composition which consists essentially of from about 71.8 mole percent to about 90.7 mole percent hydrogen fluoride and from about 9.3 mole percent to about 28.2 mole percent 2-chloro-3,3,3-trifluoropropene.
  • This composition has a boiling point of from about 0° C. to about 61° C. at a pressure of from about 15 psia to about 107 psia.
  • the invention also provides a method of forming an azeotropic or azeotrope-like composition which comprises forming a blend which consists essentially of from about 6.2 mole percent to about 59.9 mole percent hydrogen fluoride and from about 40.1 mole percent to about 93.8 mole percent 2-chloro-3,3,3-trifluoropropene.
  • the invention also provides a method of forming an azeotropic or azeotrope-like composition which comprises forming a blend which consists essentially of from about 71.8 mole percent to about 90.7 mole percent hydrogen fluoride and from about 9.3 mole percent to about 28.2 mole percent 2-chloro-3,3,3-trifluoropropene.
  • the invention further provides a method for removing 2-chloro-3,3,3-trifluoropropene from a mixture containing 2-chloro-3,3,3-trifluoropropene and at least one impurity, which comprises adding hydrogen fluoride to the mixture in an amount sufficient to form an azeotropic or azeotrope-like composition which consists essentially of from about 6.2 mole percent to about 59.9 mole percent hydrogen fluoride and from about 40.1 mole percent to about 93.8 mole percent 2-chloro-3,3,3-trifluoropropene, and thereafter separating the azeotropic composition from the impurity.
  • the invention still further provides a method for removing 2-chloro-3,3,3-trifluoropropene from a mixture containing 2-chloro-3,3,3-trifluoropropene and at least one impurity, which comprises adding hydrogen fluoride to the mixture in an amount sufficient to form an azeotropic or azeotrope-like composition which consists essentially of from about 71.8 mole percent to about 90.7 mole percent hydrogen fluoride and from about 9.3 mole percent to about 28.2 mole percent 2-chloro-3,3,3-trifluoropropene, and thereafter separating the azeotropic composition from the impurity.
  • FIG. 1 shows a plot of the vapor pressures of the mixtures formed in Example 2 as measured at 0° C., 25° C. and 61° C.
  • reagents are fluorinated with hydrogen fluoride. This may be done, for example, by the gas phase catalytic fluorination of CCl 2 ⁇ CClCH 2 Cl with HF to yield HCFO-1233xf.
  • the reaction products of such precursors include HCFO-1233xf, unreacted HF and other by-products. Upon removal of the by-products, a binary azeotrope or azeotrope-like composition of HCFO-1233xf and HF is formed.
  • This binary azeotrope or azeotrope-like composition is then available for separation into its component parts.
  • the azeotropic or azeotrope-like compositions of the HCFO-1233xf and HF are also useful as recycle to the fluorination reactor.
  • HCFO-1233xf forms azeotropic and azeotrope-like mixtures with HF.
  • the thermodynamic state of a fluid is defined by its pressure, temperature, liquid composition and vapor composition.
  • the liquid composition and vapor phase are essentially equal at a given temperature and pressure range. In practical terms this means that the components cannot be separated during a phase change.
  • an azeotrope is a liquid mixture that exhibits a maximum or minimum boiling point relative to the boiling points of surrounding mixture compositions.
  • azeotrope or an azeotrope-like composition is an admixture of two or more different components which, when in liquid form under given pressure, will boil at a substantially constant temperature, which temperature may be higher or lower than the boiling temperatures of the components and which will provide a vapor composition essentially identical to the liquid composition undergoing boiling.
  • azeotropic compositions are defined to include azeotrope-like compositions which means a composition that behaves like an azeotrope, i.e., has constant-boiling characteristics or a tendency not to fractionate upon boiling or evaporation.
  • the composition of the vapor formed during boiling or evaporation is the same as or substantially the same as the original liquid composition.
  • the liquid composition if it changes at all, changes only to a minimal or negligible extent.
  • the liquid composition changes to a substantial degree.
  • the essential features of an azeotrope or an azeotrope-like composition are that at a given pressure, the boiling point of the liquid composition is fixed and that the composition of the vapor above the boiling composition is essentially that of the boiling liquid composition, i.e., essentially no fractionation of the components of the liquid composition takes place.
  • Both the boiling point and the weight percentages of each component of the azeotropic composition may change when the azeotrope or azeotrope-like liquid composition is subjected to boiling at different pressures.
  • an azeotrope or an azeotrope-like composition may be defined in terms of the relationship that exists between its components or in terms of the compositional ranges of the components or in terms of exact weight percentages of each component of the composition characterized by a fixed boiling point at a specified pressure.
  • the present invention provides a composition which comprises effective amounts of hydrogen fluoride and HCFO-1233xf to form an azeotropic or azeotrope-like composition.
  • effective amount is meant an amount of each component which, when combined with the other component, results in the formation of an azeotrope or azeotrope-like mixture.
  • inventive compositions preferably are binary azeotropes which consist essentially of combinations of only hydrogen fluoride with HCFO-1233xf.
  • the inventive composition contains from about 6.2 mole percent to about 59.9 mole percent HF, preferably from about 53.5 mole percent to about 59.9 mole percent.
  • the inventive composition contains from about 71.8 mole percent to about 90.7 mole percent HF, preferably from about 71.8 mole percent to about 86.7 mole percent HF and most preferably from about 71.8 mole percent to about 85.3 mole percent based on the weight of the azeotropic or azeotrope-like composition.
  • the inventive composition contains from about 40.1 mole percent to about 93.8 mole percent HCFO-1233xf, preferably from about 40.1 mole percent to about 46.5 mole percent based on the weight of the azeotropic or azeotrope-like composition.
  • the inventive composition contains from about 9.3 mole percent to about 28.2 mole percent HCFO-1233xf, preferably from about 13.3 mole percent to about 28.2 mole percent and most preferably from about 14.7 mole percent to about 28.2 mole percent based on the weight of the azeotropic or azeotrope-like composition.
  • the composition of the present invention preferably has a boiling point of about from 0° C. to about 61° C. at a pressure of about 15 psia to about 107 psia. In one embodiment it has a boiling point of about 0° C. at a pressure of about 15 psia. In another embodiment it has a boiling point of about 25° C. at a pressure of about 38 psia. In another embodiment it has a boiling point of about 61° C. at a pressure of about 107 psia.
  • An azeotropic or azeotrope-like composition having about 82.5 ⁇ 1.2 mole percent HF and about 17.5 ⁇ 1.2 mole percent HCFO-1233xf was found at 25° C.
  • 2-chloro-3,3,3-trifluoropropene may be removed from a mixture containing 2-chloro-3,3,3-trifluoropropene (HCFO-1233xf) and an impurity which may, for example, result from manufacturing steps in the preparation of 2-chloro-3,3,3-trifluoropropene (HCFO-1233xf). This is done by adding hydrogen fluoride to the mixture of the 2-chloro-3,3,3-trifluoropropene (HCFO-1233xf) and impurity.
  • Hydrogen fluoride is added to the mixture in an amount sufficient to form an azeotropic composition of the 2-chloro-3,3,3-trifluoropropene (HCFO-1233xf) and the hydrogen fluoride, and thereafter the azeotropic composition is separated from the impurity, for example by distillation or other art recognized separating means.
  • the impurity itself does not form an azeotropic mixture with 2-chloro-3,3,3-trifluoropropene (HCFO-1233xf), hydrogen fluoride or a mixture of 2-chloro-3,3,3-trifluoropropene (HCFO-1233xf) and hydrogen fluoride.
  • the impurity does form an azeotropic mixture with 2-chloro-3,3,3-trifluoropropene (HCFO-1233xf), hydrogen fluoride or a mixture of 2-chloro-3,3,3-trifluoropropene (HCFO-1233xf) and hydrogen fluoride.
  • Typical impurities of 2-chloro-3,3,3-trifluoropropene include other halocarbons which may be miscible with 2-chloro-3,3,3-trifluoropropene (HCFO-1233xf) such as 1,1,1,2,3-pentachloropropane; 1,1,2,3-tetrachloropropene; 2,3,3,3-tetrafluoropropene; 2,3-dichloro-3,3-difluoropropene (HCFO-1232xf); 1,1,1,2,2-pentafluoropropane; or 1,2-dichloro-3,3,3-trifluoropropene.
  • HCFO-1233xf halocarbons which may be miscible with 2-chloro-3,3,3-trifluoropropene
  • HCFO-1233xf Binary compositions containing solely 2-chloro-3,3,3-trifluoropropene (HCFO-1233xf) and HF were blended to form a heterogeneous azeotrope mixtures at different compositions.
  • the vapor pressures of the mixtures were measured at about 0, 25 and 61° C. and the following results were noticed.
  • Table 1 shows the vapor pressure measurements of HCFO-1233xf and HF as a function of composition with varying weight percent HF at constant temperatures of about 0, 25, and 61° C. The data also showed that HCFO-1233xf/HF is a heterogeneous mixture.
  • the data also shows that the mixture is azeotropic or azeotrope-like since the vapor pressure of the mixtures of HCFO-1233xf and HF is higher, at all indicated blend proportions, than vapor pressures of HCFO-1233xf and HF alone, i.e. as indicated in the first and last rows of Table 1 when HF is 0.0 mole % and HCFO-1233xf is at 100.0 mole % as well as when HCFO-1233xf is at 0.0 mole % and HF is at 100.0 mole %.
  • Table 1 The data from Table 1 is shown in graphic form in FIG. 1 .
  • the azeotropic or azeotrope-like composition of the HCFO-1233xf/HF mixture was also verified by Vapor-Liquid-Liquid equilibrium (VLLE) experiment. 63.5 g of 2-chloro-3,3,3-trifluoropropene (HCFO-1233xf) were mixed with 36.5 g of HF to form a heterogeneous mixture (visual observation) at 24° C. The vapor composition, upper liquid (HF rich), and bottom liquid (organic) were sampled. The result shows that the azeotropic composition is about 82.5 ⁇ 1.2 mole percent HF at 24° C.
  • VLLE Vapor-Liquid-Liquid equilibrium

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US12/396,672 2008-03-06 2009-03-03 Azeotrope-Like Composition of 2-Chloro-3,3,3-Trifluoropropene (HCFC-1233xf) and Hydrogen Fluoride (HF) Abandoned US20090224207A1 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
US12/396,672 US20090224207A1 (en) 2008-03-06 2009-03-03 Azeotrope-Like Composition of 2-Chloro-3,3,3-Trifluoropropene (HCFC-1233xf) and Hydrogen Fluoride (HF)
ES09154367.8T ES2522624T5 (es) 2008-03-06 2009-03-04 Composición de tipo azeotrópico de 2-cloro-3,3,3-trifluoropropeno (HCFO-1233xf) y fluoruro de hidrógeno (HF)
EP09154367.8A EP2098499B2 (en) 2008-03-06 2009-03-04 Azeotrope-like composition of 2-chloro-3,3,3-trifluoropropene (HCFC-1233xf) and hydrogen fluoride (HF)
CN200910138740.0A CN101607866B (zh) 2008-03-06 2009-03-05 2-氯-3,3,3-三氟丙烯(HCFC-1233xf)和氟化氢(HF)的类恒沸物组合物
JP2009053570A JP5430977B2 (ja) 2008-03-06 2009-03-06 ２−クロロ−３，３，３−トリフルオロプロペン（ＨＣＦＣ−１２３３ｘｆ）およびフッ化水素（ＨＦ）の共沸様組成物
MX2009002515A MX2009002515A (es) 2008-03-06 2009-03-06 Composicion tipo azeotropo de 2-cloro-3,3,3-trifluoropropeno (hcfc-1233xf) y fluoruro de hidrogeno (hf).
KR1020090019136A KR101594018B1 (ko) 2008-03-06 2009-03-06 2-클로로-3,3,3-트리플루오로프로펜(ＨＣＦＯ-1233ｘｆ) 및 플루오르화 수소(ＨＦ)의 유사-공비 조성물

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US3418408P 2008-03-06 2008-03-06
US12/396,672 US20090224207A1 (en) 2008-03-06 2009-03-03 Azeotrope-Like Composition of 2-Chloro-3,3,3-Trifluoropropene (HCFC-1233xf) and Hydrogen Fluoride (HF)

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US12/396,528 Active 2030-12-12 US8546624B2 (en) 2008-03-06 2009-03-03 Azeotrope-like composition of 2-chloro-3,3,3-trifluoropropene (HCFC-1233xf) and hydrogen fluoride (HF)
US12/396,672 Abandoned US20090224207A1 (en) 2008-03-06 2009-03-03 Azeotrope-Like Composition of 2-Chloro-3,3,3-Trifluoropropene (HCFC-1233xf) and Hydrogen Fluoride (HF)
US14/022,658 Active 2029-08-10 US9464013B2 (en) 2008-03-06 2013-09-10 Azeotrope-like composition of 2-chloro-3,3,3-trifluoropropene (HCFC-1233xf) and hydrogen fluoride (HF)
US15/289,546 Active US10259760B2 (en) 2008-03-06 2016-10-10 Azeotrope-like composition of 2-chlor0-3,3,3-trifluoropropene (HCFC-1233xf) and hydrogen fluoride (HF)

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US15/289,546 Active US10259760B2 (en) 2008-03-06 2016-10-10 Azeotrope-like composition of 2-chlor0-3,3,3-trifluoropropene (HCFC-1233xf) and hydrogen fluoride (HF)

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JP (1) JP5430977B2 (OSRAM)
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ES (1) ES2522624T5 (OSRAM)
MX (1) MX2009002515A (OSRAM)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100113322A1 (en) * 2008-10-31 2010-05-06 Honeywell International Inc. Azeotrope-Like Compositions Of 1,1,2,3-Tetrachloropropene And Hydrogen Fluoride
US20110031436A1 (en) * 2008-05-07 2011-02-10 E.I. Du Pont De Nemours And Company Compositions comprising 2,3-dichloro-1,1,1-trifluoropropane, 2-chloro-1,1,1-trifluoropropene, 2-chloro-1,1,1,2-tetrafluoropropane or 2,3,3,3-tetrafluoropropene
US20110155942A1 (en) * 2009-12-23 2011-06-30 Arkema France Catalytic Gas Phase Fluorination of 1230xa to 1234yf
US8114308B2 (en) * 2010-03-30 2012-02-14 Honeywell International Inc. Azeotrope-like composition of 2,3-dichloro-3,3-difluoropropene (HCFO-1232xf) and hydrogen fluoride (HF)
US20120240477A1 (en) * 2009-12-22 2012-09-27 Ei Du Pont De Nemours And Company Compositions comprising 2,3,3,3-tetrafluoropropene, 1,1,2,3-tetra-chloropropene, 2-chloro-3,3,3-trifluoropropene, or 2-chloro-1,1,1,2-tetrafluoropropane
WO2012121876A3 (en) * 2011-02-23 2012-12-06 Honeywell International Inc. Azeotrope and azeotrope-like compositions useful for the production of haloolefins
US20140275652A1 (en) * 2013-03-15 2014-09-18 Honeywell International Inc. Integrated process to produce 2,3,3,3-tetrafluoropropene
WO2014147310A1 (fr) 2013-03-20 2014-09-25 Arkema France Composition comprenant hf et 2,3,3,3-tetrafluoropropene
WO2014147312A1 (fr) * 2013-03-20 2014-09-25 Arkema France Composition comprenant hf et 3,3,3-trifluoro-2-chloropropene
US10301236B2 (en) 2015-05-21 2019-05-28 The Chemours Company Fc, Llc Hydrofluorination of a halogenated olefin with SbF5 in the liquid phase
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