Fluorine Is Sole Halogen Patents (Class 570/136)
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Patent number: 8357828Abstract: To provide a simple and economical process for producing 1,1-dichloro-2,3,3,3-tetrafluoropropene, which does not require purification of the raw material component obtained in the form of a mixture of isomers, and a process for producing 2,3,3,3-tetrafluoropropene from the product thereby obtained. A process for producing 1,1-dichloro-2,3,3,3-tetrafluoropropene, characterized by bringing a mixture of dichloropentafluoropropane isomers which contains 1,1-dichloro-2,2,3,3,3-pentafluoropropane into contact with an aqueous alkali solution in the presence of a phase transfer catalyst, and thereby selectively dehydrofluorinating only the 1,1-dichloro-2,2,3,3,3-pentafluoropropane in the mixture, and a process for producing 2,3,3,3-tetrafluoropropene from the 1,1-dichloro-2,3,3,3-tetrafluoropropene thereby obtained.Type: GrantFiled: June 20, 2011Date of Patent: January 22, 2013Assignee: Asahi Glass Company, LimitedInventors: Hidekazu Okamoto, Yasuyuki Sasao
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Patent number: 8350101Abstract: The present invention relates to the method for obtaining vinylidene fluoride and the subject matter thereof is more particularly the production of vinylidene fluoride by pyrolysis of 1,2-dichloro-2,2-difluoroethane in the presence of hydrogen at a temperature of greater than or equal to 400° C.Type: GrantFiled: August 20, 2009Date of Patent: January 8, 2013Assignee: Arkema FranceInventors: Sylvain Perdrieux, Serge Hub
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Patent number: 8344190Abstract: Process for producing fluorinated olefins from fluorinated materials, the process comprising thermally decomposing the fluoropolymers into fluoroolefins in a reactor having a feeding zone where the fluorinated materials are fed into the reactor and a decomposition zone where the fluorinated materials are thermally decomposed and wherein the thermal decomposition is carried out in the presence of microwave irradiation.Type: GrantFiled: September 30, 2009Date of Patent: January 1, 2013Assignee: 3M Innovative Properties CompanyInventors: Klaus Hintzer, Gunther J. Kaempf, Thomas Kolbeck, Tilman C. Zipplies, Monika A. Willert-Porada, Thorsten Gerdes, Achim Schmidt-Rodenkirchen
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Patent number: 8293953Abstract: To provide a method for producing 1,1-dichloro-2,2,3,3,3-pentafluoropropane (HCFC-225ca) at a high content ratio, which is useful as e.g. a starting material to obtain 1,1-dichloro-2,3,3,3-tetrafluoropropene (R1214ya). The method comprises subjecting a starting material comprising one isomer or a mixture of at least two isomers of dichloropentafluoropropane (HCFC-225) and having a HCFC-225ca content of less than 60 mol %, to an isomerization reaction in the presence of a Lewis acid catalyst or a metal oxide catalyst so as to increase the HCFC-225ca content in the product to be higher than the content in the starting material.Type: GrantFiled: March 21, 2011Date of Patent: October 23, 2012Assignee: Asahi Glass Company, LimitedInventor: Hidekazu Okamoto
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Patent number: 8288492Abstract: Oligomers of perfluoro(methyl vinyl ether) with vinylidene fluoride or tetrafluoroethylene are disclosed that contain 40-90 mole percent copolymerized units of vinylidene fluoride or tetrafluoroethylene and 10-60 mole percent copolymerized units of perfluoro(methyl vinyl ether), said oligomers having two functional endgroups and having a number average molecular weight between 1000 and 25,000.Type: GrantFiled: September 12, 2008Date of Patent: October 16, 2012Assignees: E I du Pont de Nemours and CompanyInventors: Ming-Hong Hung, Bruno Ameduri, Cyrille Andre Jean-Marie Boyer
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Patent number: 8273928Abstract: The present disclosure relates to a process for separating a fluoroolefin from a mixture comprising hydrogen fluoride and fluoroolefin, comprising azeotropic distillation both with and without an entrainer. In particular are disclosed processes for separating any of HFC-1225ye, HFC-1234ze, HFC-1234yf or HFC-1243zf from HF.Type: GrantFiled: August 24, 2007Date of Patent: September 25, 2012Assignee: E I Du Pont de Nemours and CompanyInventors: Jeffrey P. Knapp, Barry Asher Mahler, Donald J. Toton
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Patent number: 8247626Abstract: To provide a method for purifying tetrafluoroethylene by removing, from tetrafluoroethylene containing a polymerization inhibitor, the polymerization inhibitor by adsorption. A method of bringing tetrafluoroethylene containing a polymerization inhibitor into contact with a silica gel containing a metal salt in an amount of from 250 to 100,000 mass ppm as calculated as metal atoms to remove the polymerization inhibitor by adsorption, and the metal salt is preferably a salt of a metal of Group 3 to 13 of the Periodic Table, more preferably a salt of a metal of Group 8 to 10 of the Periodic Table. For example, as the metal salt, a salt of at least one metal selected from the group consisting of iron, cobalt, nickel, ruthenium, rhodium, palladium, osmium, iridium and platinum may be used.Type: GrantFiled: October 21, 2010Date of Patent: August 21, 2012Assignee: Asahi Glass Company, LimitedInventors: Shigeru Aida, Manabu Sato, Takeya Sakamoto, Nobuo Matsushita, Yuuji Hayase, Tomohiro Gotou, Kenji Fujiwara
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Publication number: 20120202904Abstract: A blowing agent for thermosetting foams is disclosed. The blowing agent is 2,4,4,4-tetrafluorobutene-1 alone or in combination with a hydrofluoroolefin (HFO), hydrofluorocarbon (HFC), hydrochlorofluoroolefin (HCFO), or a hydrocarbon. The blowing agent is effective as a blowing agent in the manufacture of thermosetting foams.Type: ApplicationFiled: October 20, 2010Publication date: August 9, 2012Applicant: ARKEMA INCInventors: Benjamin Bin Chen, Joseph S. Costa, Philippe Bonnet
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Publication number: 20120172637Abstract: The invention is directed to a process for preparing 2,2,2,3-tetrafluoropropene (1234yf), comprising: (i) contacting 1,1,2,3-tetrachloropropene (1230xa) with hydrogen fluoride HF in gas phase in the presence of a fluorination catalyst under conditions sufficient to produce a reaction mixture; (ii) separating the reaction mixture into a first stream comprising HCl, 2,2,2,3-tetrafluoropropene (1234yf) and a second stream comprising HF, 2-chloro-3,3,3-trifluoro-1-propene (1233xf) and 1,1,1,2,2-pentafluoropropane (245cb); (iii) recycling at least a part of the second stream at least in part back to step (i).Type: ApplicationFiled: March 9, 2012Publication date: July 5, 2012Applicant: Arkema FranceInventors: Anne PIGAMO, Dominique Deur-Bert, Laurent Wendlinger
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Patent number: 8212091Abstract: A process for depolymerizing fluoropolymers includes continuously feeding a solid fluoropolymer, in particulate form, into a horizontal cylindrical first reaction zone. The fluoropolymer particles enter the first reaction zone at one end. Within the first reaction zone, a central axle from which protrudes at least one paddle, continuously rotates. The rotating paddle serves to advance the fluoropolymer particles along the reaction zone while agitating them. As the fluoropolymer particles pass along the reaction zone, they are subjected to an elevated temperature, thereby depolymerizing the fluoropolymer into a fluoro-containing compound-rich gas phase. A residual solids phase is withdrawn at the other end of the first reaction zone, as is the gas phase. Optionally, the gas phase is passed through a second reaction zone which is also at an elevated temperature. The gas phase is quenched, thereby to recover the fluoro-containing compounds as gaseous products.Type: GrantFiled: November 24, 2006Date of Patent: July 3, 2012Assignee: The South African Nuclear Energy Corporation LimitedInventors: Izak Jacobus Van Der Walt, Alfred Teo Grunenberg, Johannes Theodorus Nel
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Publication number: 20120165578Abstract: Disclosed are compositions comprising HFC-245eb and at least one additional compound selected from the group consisting of HFO-1234ze, HFC-245fa, HFC-236cb, HFC-236ea, HFC-236fa, HFC-227ea, HFC-227ca, HFO-1225yc, HFO-1225zc, HFO-1225ye, methane, ethane, propane, HFC-23, HFC-143a, HFC-134, HFC-134a, FC-1216, HFO-1234yf, HFC-254eb, HFO-1243zf, and HFC-254fb. Compositions comprising HFC-245eb are useful in processes to make HFO-1234yf. Also disclosed are compositions comprising HFO-1234yf and at least one additional compound selected from the group consisting of HFO-1234ze, HFC-254eb, HFC-254fb, HFO-1243zf, HFCHFC-245eb, HFC-245fa, HFC-245cb, HFC-236cb, HFC-236ea, HFC-236fa, HFC-227ea, HFC-227ca, HFO-1225yc, HFO-1225zc, HFO-1225ye, methane, ethane, propane, HFC-23, HFC-134, HFC-134a, HFO-1132a and FC-1216. Compositions comprising HFO-1234yf are useful as heat transfer compositions for use in refrigeration, air-conditioning and heat pump systems.Type: ApplicationFiled: February 29, 2012Publication date: June 28, 2012Applicant: E. I. DU PONT DE NEMOURS AND COMPANYInventors: Barry Asher MAHLER, Mario Joseph NAPPA, Jeffrey P. KNAPP
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Publication number: 20120159976Abstract: Disclosed herein is a chiller apparatus containing refrigerant characterized by said refrigerant being HFO-1336mzz that is trans isomer or primarily trans isomer. These chillers may be flooded evaporators or direct expansion evaporators, which utilize either centrifugal or screw compressors. Also disclosed herein are methods for producing cooling comprising evaporating trans-HFO-1336mzz in an evaporator in the vicinity of a body to be cooled, thereby producing cooling. Also disclosed herein is a method for replacing HFC-236fa or CFC-114 refrigerant in a chiller apparatus, said method comprising providing HFO-1336mzz to said chiller apparatus in place of the replaced refrigerant; wherein said HFO-1336mzz is trans isomer or primarily trans isomer.Type: ApplicationFiled: September 15, 2010Publication date: June 28, 2012Applicant: E.I. DuPont De Nemours and CompanyInventor: Konstantinos Kontomaris
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Patent number: 8203022Abstract: Described is a method for producing fluoropropenes of formula CF3CX?CX2 wherein each X is F or H, at least one X is H, and at least one X is F, comprising pyrolyzing a hydrofluorochloropropane of formula CF3CXYCX2Y, wherein each X is F or H, at least one X is H, and at least one X is F, and one Y is Cl and the other Y is H, in the gas-phase in a reaction vessel, maintained at a temperature high enough to effect the pyrolysis of said hydrofluorochloropropane to said fluoropropene, wherein the selectivity for the production of the fluoropropene is at least 80%, in the absence of a catalyst.Type: GrantFiled: October 26, 2009Date of Patent: June 19, 2012Assignee: E I du Pont de Nemours and CompanyInventor: Mario Joseph Nappa
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Patent number: 8188323Abstract: The present invention relates to compositions and processes of using perfluoropolyether to maintain or improve the oil return, lubrication, cooling capacity or energy efficiency of the refrigeration, air conditioning and heat transfer system.Type: GrantFiled: July 11, 2007Date of Patent: May 29, 2012Assignee: E.I. du Pont de Nemours and CompanyInventors: Thomas J. Leck, Thomas Frank Saturno, Gregory A. Bell
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Publication number: 20120108688Abstract: The present invention relates to blowing agent compositions comprising the unsaturated halogenated hydroolefin 3,3,3-trifluoropropene (HFO 1243zf) and combinations including primarily 3,3,3-trifluoropropene (HFO 1243zf). The blowing agent compositions are useful in that they provide sufficient plasticization to permit the production of low density insulating thermoplastic foams with improved k-factor.Type: ApplicationFiled: January 3, 2012Publication date: May 3, 2012Applicant: Arkema Inc.Inventors: Brett L. Van Horn, Maher Y. Elsheikh, Benjamin Bin Chen, Philippe Bonnet
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Patent number: 8148585Abstract: Disclosed is a mixture of fluoroolefin iodides represented by the general formulae: CnF2n+1CF2CH?CF(CF2CF2)mI [Ia] and CnF2n+1CF?CHCF2(CF2CF2)mI [Ib] wherein n is an integer of 0 to 5, and m is an integer of 1 to 3. The fluoroolefin iodide mixture is produced by subjecting a fluoroalkyl iodide represented by the general formula: CnF2n+1CF2CH2CF2(CF2CF2)mI [II] wherein n is an integer of 0 to 5, and m is an integer of 1 to 3, to an HF-elimination reaction in the presence of a basic compound.Type: GrantFiled: August 17, 2009Date of Patent: April 3, 2012Assignee: Unimatec Co., Ltd.Inventors: Daisuke Murai, Mitsuru Maeda, Seiichiro Murata
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Patent number: 8133407Abstract: Provided is a composition comprising (a) at least one halogenated compound selected from the group consisting of C3-C5 hydrofluoroolefin, CF3I, and combinations thereof, and (b) an effective stabilizing amount of a sesquiterpene selected from the group consisting of farnesol, farnesene, and mixtures thereof.Type: GrantFiled: May 15, 2009Date of Patent: March 13, 2012Assignee: Honeywell International Inc.Inventors: Gary Zyhowski, Rajiv Ratna Singh, Raymond H. Thomas, Mark W. Spatz, Roy P. Robinson, George J. Samuels, Gregory J. Shafer, Michael Van Der Puy, David P. Wilson, John L. Welch, Ronald P. Vogl, Samuel F. Yana Motta
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Patent number: 8129574Abstract: Disclosed is a process and apparatus for the catalytic hydrogenation of fluoroolefins to fluorocarbons where the reaction is carried out in a multi-tube shell and tube reactor. Reactions involving hydrogenation of fluoro-olefins are typically exothermic. In commercial processes where a fluoro-olefin C(n)H(2n?x)F(x) to C(n)H(2n?x+2)F(x) is hydrogenated (e.g. hexafluoropropylene to 236ea, 1225ye to 245eb, and the like), inadequate management or control of heat removal may induce excess hydrogenation, decomposition and hot spots resulting in reduced yields and potential safety issues. In the hydrogenation of fluoro-olefins, it is therefore necessary to control the reaction temperature as precisely as practical to overcome challenges associated with heat management and safety.Type: GrantFiled: August 31, 2009Date of Patent: March 6, 2012Assignee: Honeywell International Inc.Inventors: Haluk Kopkalli, Yuon Chiu, Orlando George Rodrigues, Gus Cerri, Hsueh Sung Tung, Stephen A. Cottrell
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Publication number: 20110313214Abstract: A subject of the invention is a compound of formula (I) XCFzR3-z in which: in which X represents a branched or linear unsaturated hydrocarbon radical having up to 5 carbon atoms, unsubstituted or substituted, R represents Cl, F, Br, I or H, Z is equal to 1, 2 or 3, and the bio-carbon content of which is at least 1%. A subject of the invention is also processes for the preparation of this compound.Type: ApplicationFiled: July 9, 2009Publication date: December 22, 2011Applicant: Arkema FranceInventor: Jean-Luc Dubois
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Patent number: 8063257Abstract: 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.Type: GrantFiled: August 15, 2008Date of Patent: November 22, 2011Assignee: Honeywell International Inc.Inventors: Jing Ji Ma, Michael Van Der Puy
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Publication number: 20110269861Abstract: Compositions and methods based on the use of fluoroalkene containing from 3 to 4 carbon atoms and at least one carbon-carbon double bond, such as HFO-1214, HFO-HFO-1233, or HFO-1354, having properties highly beneficial in foaming and blowing agent applications, articles and methods.Type: ApplicationFiled: July 7, 2011Publication date: November 3, 2011Applicant: HONEYWELL INTERNATIONAL INC.Inventors: ROBERT C. JOHNSON, HSUEH SUNG TUNG, RAJIV RATNA SINGH, IAN SHANKLAND
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Patent number: 8049046Abstract: The present invention relates to compositions and processes of using perfluoropolyether to maintain or improve the oil return, lubrication, cooling capacity, or energy efficiency of a refrigeration, air conditioning or heat transfer system.Type: GrantFiled: June 9, 2010Date of Patent: November 1, 2011Assignee: E.I. du Pont de Nemours and CompanyInventors: Thomas J. Leck, Thomas Frank Saturno, Gregory A. Bell
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Publication number: 20110259022Abstract: The present invention relates to compositions comprising at least one fluoroolefin and an effective amount of stabilizer that may be an epoxide, fluorinated epoxide or oxetane, or a mixture thereof with other stabilizers. The stabilized compositions may be useful in cooling apparatus, such as refrigeration, air-conditioning, chillers, and heat pumps, as well as in applications as foam blowing agents, solvents, aerosol propellants, fire extinguishants, and sterilants.Type: ApplicationFiled: August 31, 2007Publication date: October 27, 2011Inventors: Andrew Edward Feiring, Viacheslav A. Petrov, Barbara Haviland Minor, Mario Joseph Nappa, Nandini C. Mouli, Thomas J. Leck, Jon Lee Howell
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Publication number: 20110237488Abstract: This invention relates to cleaning compositions comprising unsaturated fluorinated hydrocarbons. The invention further relates to use of said cleaning compositions in methods to clean, degrease, deflux, dewater, and deposit fluorolubricant. The invention further relates to novel unsaturated fluorinated hydrocarbons and their use as cleaning compositions and in the methods listed above.Type: ApplicationFiled: June 6, 2011Publication date: September 29, 2011Applicant: E.I.DU PONT DE NEMOURS AND COMPANYInventors: Mario Joseph Nappa, Melodie A. Schweitzer, Allen Capron Sievert, Ekaterina N. Swearingen
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Publication number: 20110236311Abstract: The invention relates to radiodiagnostic and radiotherapeutic agents, including biologically active vectors labelled with radionuclides. It further relates to methods and reagents labelling a vector such as a peptide comprising reaction of a compound of formula (I) with a compound of formula (II): or, a compound of formula (III) with a compound of formula (IV) in the presence of a Cu (I) catalyst. The resultant labelled conjugates are useful as diagnostic agents, for example, as radiopharmaceuticals more specifically for use in Positron Emission Tomography (PET) or Single Photon Emission Computed Tomography (SPECT) or for radiotherapy.Type: ApplicationFiled: June 13, 2011Publication date: September 29, 2011Applicant: HAMMERSMITH IMANET LIMITEDInventors: ERIK ARSTAD, MATTHIAS EBERHARD GLASER
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Publication number: 20110215273Abstract: A hydrofluoroolefin and hydrofluoroolefin isomers and a process for manufacture them comprising eliminating HF from a fluorinated precursor compound are described. The fluorinated precursor compound may be provided by fluorinating a chlorinated precursor. The fluorinated precursor compound may be a fluorinated alkane. The hydroolefines are suitable as blowing agents, heat transfer fluids, or drying agents or degreasing solvents.Type: ApplicationFiled: November 13, 2009Publication date: September 8, 2011Applicant: SOLVAY FLUOR GMBHInventors: Ercan Uenveren, Johannes Eicher, Wolfgang Kalbreyer
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Publication number: 20110184214Abstract: Process for producing fluorinated olefins from fluorinated materials, the process comprising thermally decomposing the fluoropolymers into fluoroolefins in a reactor having a feeding zone where the fluorinated materials are fed into the reactor and a decomposition zone where the fluorinated materials are thermally decomposed and wherein the thermal decomposition is carried out in the presence of microwave irradiation.Type: ApplicationFiled: September 30, 2009Publication date: July 28, 2011Inventors: Klaus Hintzer, Gunther J. Kaempf, Thomas Kolbeck, Tilman C. Zipplies, Monika A. Willert-Porada, Thorsten Gerdes, Achim Schmidt-Rodenkirchen
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Publication number: 20110144216Abstract: This invention relates to compositions, methods and systems having utility in numerous applications, and in particular, uses for compositions containing the compound cis-1,1,1,4,4,4-hexafluoro-2-butene (Z-HFO-1336mzzm), which has the following structure:Type: ApplicationFiled: December 15, 2010Publication date: June 16, 2011Applicant: HONEYWELL INTERNATIONAL INC.Inventors: Ryan Hulse, Gary John Zyhowski, Bjorn Hofman, Dave Williams, Gary Knopeck, Robert G. Richard, Rajat S. Basu, Rajiv Ratna Singh
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Patent number: 7956225Abstract: A polyfluoro-1-alkene represented by the general formula: CF3(CF2)nCH2(CF2)mCH?CH2 [I], wherein n is an integer of 0 to 5, and m is an integer of 1 to 7, is produced by reacting a polyfluoroalkyl iodide represented by the general formula: CF3(CF2)nCH2(CF2)m(CH2CH2)I [II], wherein n is an integer of 0 to 5, and m is an integer of 1 to 7, with an inorganic basic compound in the presence of a phase transfer catalyst. Alternatively, the polyfluoro-1-alkene is produced by reacting the polyfluoroalkyl iodide [II] with a nitrogen-containing organic basic compound, and is obtained product [I] as one fraction thereof. By the copolymerization of the polyfluoro-1-alkene with other fluorinated olefin monomers, a fluorine-containing copolymer having excellent light transmittance in the visible light range is formed.Type: GrantFiled: June 12, 2009Date of Patent: June 7, 2011Assignee: Unimatec Co., Ltd.Inventors: Katsuyuki Sato, Seiichiro Murata, Akihiko Ikeda, Yoshiyama Kaneumi
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Patent number: 7951982Abstract: 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)??(I) with a compound of Formula (II) C(R1aR2bR3c)Cn(R1aR2bR3c)??II wherein R1a, R2b, and R3c are independently a hydrogen atom or a halogen selected from the group consisting of fluorine; chlorine, bromine and iodine, provided that the compound of formula I has at least three halogen substituents and that said at three halogen substituents comprise at least one fluorine; a, b and c are independently=0, 1, 2 or 3 and (a+b+c)=2 or 3; and n is 0 or 1, under conditions effective to produce at least one C3 fluoroolefin.Type: GrantFiled: November 3, 2006Date of Patent: May 31, 2011Assignee: Honeywell International Inc.Inventors: Sudip Mukhopadhyay, Haridasan K. Nair, Hsueh S. Tung, Michael Van Der Puy, Robert C. Johnson, Daniel C. Merkel
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Publication number: 20110124928Abstract: An apparatus for producing a gas using a raw material gas having high reactivity, in particular, a fluorinated hydrocarbon, or a vessel for supplying the gas, characterized in that the surface of a portion thereof contacting with the gas has an average roughness of 1 ?m or less in terms of a center line average roughness Ra. It is preferred that an oxide-based passivated film such as a film based on chromium oxide, aluminum oxide, yttrium oxide, magnesium oxide or the like is formed on the surface having a roughness controlled as above. The above apparatus and vessel can be suitably used for preventing the contamination of a raw material gas originated from a gas production apparatus or a vessel for supplying the gas.Type: ApplicationFiled: January 12, 2011Publication date: May 26, 2011Applicant: Zeon CorporationInventors: Tadahiro Ohmi, Yasuyuki Shirai, Takeyoshi Kato, Kimiaki Tanaka, Masahiro Nakamura, Katsutomo Tanaka
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Publication number: 20110118512Abstract: Disclosed herein are processes for the production of hydrofluoroolefins by dehydrofluorination. Also disclosed herein are processes for separation of hydrofluoroolefins from hydrofluorocarbons and from hydrogen fluoride.Type: ApplicationFiled: January 25, 2011Publication date: May 19, 2011Applicant: E.I. DU PONT DE NEMOURS AND COMPANYInventors: RALPH NEWTON MILLER, MARIO JOSEPH NAPPA, VELLIYUR NOTT MALLIKARJUNA RAO, ALLEN CAPRON SIEVERT
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Publication number: 20110077435Abstract: A polyfluoro-1-alkene represented by the general formula: CF3(CF2)nCH2(CF2)mCH?CH2[I], wherein n is an integer of 0 to 5, and m is an integer of 1 to 7, is produced by reacting a polyfluoroalkyl iodide represented by the general formula: CF3(CF2)nCH2(CF2)m(CH2CH2)I [II], wherein n is an integer of 0 to 5, and m is an integer of 1 to 7, with an inorganic basic compound in the presence of a phase transfer catalyst. Alternatively, the polyfluoro-1-alkene is produced by reacting the polyfluoroalkyl iodide [II] with a nitrogen-containing organic basic compound, and is obtained product [I] as one fraction thereof. By the copolymerization of the polyfluoro-1-alkene with other fluorinated olefin monomers, a fluorine-containing copolymer having excellent light transmittance in the visible light range is formed.Type: ApplicationFiled: June 12, 2009Publication date: March 31, 2011Applicant: UNIMATEC CO., LTD.Inventors: Katsuyuki Sato, Seiichiro Murata, Akihiko Ikeda, Yoshiyama Kaneumi
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Publication number: 20110041878Abstract: Disclosed is a method for removing residue from a surface comprising: contacting the surface with a composition comprising at least one unsaturated fluorinated hydrocarbon selected from the group consisting of compounds having the formula E- or Z—R1CH?CHR2, wherein R1 and R2 are, independently, C1 to C6 perfluoroalkyl groups, or C1 to C6 hydrofluoroalkyl groups, and recovering the surface from the composition.Type: ApplicationFiled: October 26, 2010Publication date: February 24, 2011Applicant: E.I. DU PONT DE NEMOURS AND COMPANYInventors: MARIO JOSEPH NAPPA, MELODIE A. SCHWEITZER, ALLEN CAPRON SIEVERT, EKATERINA N. SWEARINGEN
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Patent number: 7884255Abstract: Chemical Production Processes and Systems. Chemical production processes are provided that include replacing a halogen of an unsaturated halocarbon to produce an unsaturated hydrohalocarbon. Chemical production systems are provided that include a reaction zone coupled to first and second reservoirs, the first reservoir containing an unsaturated halocarbon and the second reservoir containing a hydrogenating reagent with the system being configured to expose the unsaturated halocarbon of the first reservoir to the hydrogenating agent of the second reservoir within the reaction zone.Type: GrantFiled: August 26, 2005Date of Patent: February 8, 2011Inventor: Vicki Hedrick
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Patent number: 7880040Abstract: 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 least one compound of formula (II) CF3CZCHZ??(II). where each X is independently Cl, I or Br; each Z is independently H or F; n is 1 or 2; m is 1, 2 or 3, provided that when n is 1, m is 1 or 2; a is 2 or 3, and a-m?0. Certain embodiments include the step of reacting fluorinated C2 olefin, such as tetrafluoroethylene, with a C1 addition agent under conditions effective to produce a compound of formula (I).Type: GrantFiled: November 3, 2006Date of Patent: February 1, 2011Assignee: Honeywell International Inc.Inventors: Sudip Mukhopadhyay, Haridasan K. Nair, Hsueh S. Tung, Michael Van Der Puy, Rajiv R. Singh, Haiyou Wang, Robert C. Johnson, Rajesh K. Dubey
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Publication number: 20110021849Abstract: A subject-matter of the invention is a process for the preparation of 2,3,3,3-tetrafluoro-1-propene comprising the following stages: (i) hydrogenation of hexafluoropropylene to give 1,1,1,2,3,3-hexafluoropropane; (ii) dehydrofluorination of the 1,1,1,2,3,3-hexafluoropropane obtained in the preceding stage to give 1,2,3,3,3-pentafluoro-1-propene; (iii) hydrogenation of the 1,2,3,3,3-pentafluoro-1-propene obtained in the preceding stage to give 1,1,1,2,3-pentafluoropropane; (iv) purification of the 1,1,1,2,3-pentafluoropropane obtained in the preceding stage; and (v) dehydrofluorination of the 1,1,1,2,3-pentafluoropropane obtained in the preceding stage to give 2,3,3,3-tetrafluoro-1-propene; and (vi) purification of the 2,3,3,3-tetrafluoro-1-propene of the preceding stage.Type: ApplicationFiled: July 23, 2010Publication date: January 27, 2011Applicant: Arkema FranceInventors: Karine Avril, Bertrand Collier
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Publication number: 20110009678Abstract: Disclosed are the combinations containing Z and E stereoisomers of hydrofluoroolefins where the more toxic isomer is less than about 30% weight of the combination (vs the sum of Z+E), to minimize the toxicity impact in the applications they will be used for such as cooling and heat fluids, foams blowing agents or solvents. Also disclosed are means to obtain combinations containing Z and E stereoisomers of hydrofluoroolefins.Type: ApplicationFiled: September 4, 2008Publication date: January 13, 2011Applicant: Arkema Inc.Inventors: Philippe Bonnet, Maher Y. Elsheikh
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Publication number: 20100249469Abstract: 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. In a reaction step for generating fluorine-containing olefin by a dehydrohalogenation reaction from fluorine-containing halogenated propane expressed by a general formula CF3CH(2-n)XnCH(3-m)Xm (wherein n=0, 1 or 2; m=1, 2 or 3; and n+m?3; and X is selected from F, Cl and Br, independently), fluorochromium oxide having a fluorine content not less than 30% by weight is used as a catalyst.Type: ApplicationFiled: November 11, 2008Publication date: September 30, 2010Inventors: Kazuhiro Takahashi, Masatoshi Nose, Takehiro Chaki
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Patent number: 7803975Abstract: Disclosed is a process for separating fluoroolefin from a composition comprising HF and fluoroolefin, said process comprising extracting said composition with an extractant. Also disclosed is a composition comprising HF, at least one fluoroolefin, and at least one extractant.Type: GrantFiled: July 11, 2007Date of Patent: September 28, 2010Assignee: E.I. du Pont de Nemours and CompanyInventor: Jeffrey P. Knapp
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Patent number: 7795482Abstract: Disclosed herein is a process for the preparation of fluorine-containing olefins comprising contacting a chlorofluoroalkene with hydrogen in the presence of a catalyst at a temperature sufficient to cause replacement of the chlorine substituents with hydrogen. Also disclosed is a catalyst composition for the hydrodechlorination of chlorofluoroalkenes comprising copper metal deposited on a support.Type: GrantFiled: June 27, 2008Date of Patent: September 14, 2010Assignee: E. I. du Pont de Nemours and CompanyInventors: Mario Joseph Nappa, Ekaterina N. Swearingen
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Patent number: 7795481Abstract: Disclosed herein is a process for the preparation of fluorine-containing olefins comprising contacting a chlorofluoroalkene with hydrogen in the presence of a catalyst at a temperature sufficient to cause replacement of the chlorine substituents with hydrogen. Also disclosed is a catalyst composition for the hydrodechlorination of chlorofluoroalkenes comprising copper metal deposited on a support.Type: GrantFiled: June 3, 2009Date of Patent: September 14, 2010Assignee: E.I. du Pont de Nemours and CompanyInventors: Mario Joseph Nappa, Ekaterina N. Swearingen
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Publication number: 20100189885Abstract: Disclosed is a method for removing residue from a surface comprising: contacting the surface with a composition comprising at least one unsaturated fluorinated hydrocarbon selected from the group consisting of compounds having the formula E- or Z—R1CH?CHR2, wherein R1 and R2 are, independently, C1 to C6 perfluoroalkyl groups, or C1 to C6 hydrofluoroalkyl groups, and recovering the surface from the composition.Type: ApplicationFiled: April 1, 2010Publication date: July 29, 2010Applicant: E. I. DU PONT DE NEMOURS AND COMPANYInventors: MARIO JOSEPH NAPPA, Melodie A. Schweitzer, Allen Capron Sievert, Ekaterina N. Swearingen
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Publication number: 20100191013Abstract: The present invention provides a method for inexpensively, efficiently, safely, and continuously producing COF2, without using highly toxic raw materials such as phosgene or difficult-to-get raw materials, with no risk of explosion or the like. Tetrafluoroethylene gas and oxygen gas are introduced into a reactor, and they are then heated in a gas phase in the absence of nitrogen gas for reaction, so as to produce carbonyl fluoride. The reactor is preferably a tubular reaction tube. As such tetrafluoroethylene gas, unpurified or purified tetrafluoroethylene gas obtained by heating HCFC-22 gas for thermal decomposition can be used. According to the present invention, COF2 that is useful as cleaning gas for CVD devices (chemical vapor deposition method) can be inexpensively, efficiently, and safely produced.Type: ApplicationFiled: September 26, 2006Publication date: July 29, 2010Applicant: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGYInventors: Heng-dao Quan, Masanori Tamura, Akira Sekiya
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Publication number: 20100174123Abstract: A dehydrofluorination process is disclosed for making hydrofluoroolefins of the structure RfCH?CHRf, wherein each Rf is independently a perfluoroalkyl group or a perfluoroalkyl group having a terminal hydrogen. The process involves reacting RfCH2CHFRf with a basic aqueous solution to produce a product mixture comprising RfCH?CHRf.Type: ApplicationFiled: December 10, 2009Publication date: July 8, 2010Applicant: E. I. DU PONT DE NEMOURS AND COMPANYInventors: Allen Capron SIEVERT, Norman A. CARLSON
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Publication number: 20100152093Abstract: This invention relates to cleaning compositions comprising unsaturated fluorinated hydrocarbons. The invention further relates to use of said cleaning compositions in methods to clean, degrease, deflux, dewater, and deposit fluorolubricant. The invention further relates to novel unsaturated fluorinated hydrocarbons and their use as cleaning compositions and in the methods listed above.Type: ApplicationFiled: March 1, 2010Publication date: June 17, 2010Applicant: E.I. DU PONT DE NEMOURS AND COMPANYInventors: MARIO JOSEPH NAPPA, MELODIE A. SCHWEITZER, ALLEN CAPRON SIEVERT, EKATERINA N. SWEARINGEN
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Publication number: 20100132387Abstract: The present invention relates to fluoroolefin compositions. The fluoroolefin compositions of the present invention are useful as refrigerants or heat transfer fluids and in processes for producing cooling or heat. Additionally, the fluoroolefin compositions of the present invention may be used to replace currently used refrigerant or heat transfer fluid compositions that have higher global warming potential.Type: ApplicationFiled: January 29, 2010Publication date: June 3, 2010Applicant: E. I. DU PONT DE NEMOURS AND COMPANYInventors: Mario Joseph Nappa, Barbara Haviland Minor
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Publication number: 20100121115Abstract: Disclosed is a process for the manufacture of hydrofluoroolefins of the structure CF3CF?CHY, wherein Y can be H or F, comprising reacting at least one fluoropropane reactant of the structure CF3CFXCFYH1 wherein X can be either F or H, and Y can be either F or H, provided that both X and Y? are not both F, with a basic aqueous solution in the presence of a non-aqueous, non-alcoholic solvent, and in the presence of a phase transfer catalyst.Type: ApplicationFiled: September 5, 2007Publication date: May 13, 2010Applicant: E. I. DU PONT DE NEMOURS AND COMPANYInventors: Velliyur Nott Mallikarjuna Rao, Allen Capron Sievert, Mario Joseph Nappa
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Publication number: 20100112328Abstract: The present invention relates to blowing agent compositions comprising the unsaturated halogenated hydroolefin 3,3,3-trifluoropropene (HFO 1243zf) and combinations including primarily 3,3,3-trifluoropropene (HFO 1243zf). The blowing agent compositions are useful in that they provide sufficient plasticization to permit the production of low density insulating thermoplastic foams with improved k-factor.Type: ApplicationFiled: March 28, 2008Publication date: May 6, 2010Inventors: Brett L. Van Horn, Benjamin Bin Chen, Phillippe Bonnet
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Publication number: 20100105967Abstract: Described is a method for producing fluoropropenes of formula CF3CX?CX2 wherein each X is F or H, at least one X is H, and at least one X is F, comprising pyrolyzing a hydrofluorochloropropane of formula CF3CXYCX2Y, wherein each X is F or H, at least one X is H, and at least one X is F, and one Y is Cl and the other Y is H, in the gas-phase in a reaction vessel, maintained at a temperature high enough to effect the pyrolysis of said hydrofluorochloropropane to said fluoropropene, wherein the selectivity for the production of the fluoropropene is at least 80%, in the absence of a catalystType: ApplicationFiled: October 26, 2009Publication date: April 29, 2010Applicant: E. I. DU PONT DE NEMOURS AND COMPANYInventor: Mario Joseph Nappa