Catalyst Utilized Patents (Class 570/156)
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Patent number: 5892135Abstract: A process for the production of trifluoroethylene (i.e., CF.sub.2 =CHF or HFC-1123) is disclosed. The process involves contacting (in the vapor phase) at least one halogenated ethane of the formula CF.sub.3 CClFX (where X is H, Cl or F) with hydrogen in the presence of a catalyst including at least one component selected from elemental metals, metal oxides, metal halides and metal oxyhalides. The metal of the component is ruthenium, copper, nickel, and/or chromium and the halogen of the halides and the oxyhalides is fluorine and/or chlorine.Type: GrantFiled: August 14, 1997Date of Patent: April 6, 1999Assignee: E. I. du Pont de Nemours and CompanyInventors: William H. Manogue, V.N. Mallikarjuna Rao
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Patent number: 5856593Abstract: Production of trifluoroethylene from 1,1,1,2-tetrafluoroethane and/or 1,1,2,2-tetrafluoroethane in a heated reaction zone in the presence of a Lewis acid catalyst.Type: GrantFiled: February 4, 1997Date of Patent: January 5, 1999Assignee: Imperial Chemical Industries PLCInventors: Richard Llewellyn Powell, Andrew Paul Sharratt
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Patent number: 5763698Abstract: The fluorine content of an acyclic saturated compound of the formula C.sub.n F.sub.a X.sub.b H.sub.c (wherein each X is independently selected from the group consisting of Cl and Br, and wherein n is 1 to 6, a is 1 to 13, b is 0 to 12, c is 1 to 9, and a+b+c equals 2n+2) is reduced by reacting the acyclic saturated compound with HCl in the vapor phase at an elevated temperature in the presence of a catalyst, the mole ratio of HCl to the acyclic saturated compound being at least about 1:1.Type: GrantFiled: November 3, 1995Date of Patent: June 9, 1998Assignee: E. I. du Pont de Nemours and CompanyInventors: Leo Ernest Manzer, V. N. Mallikarjuna Rao, Steven Henry Swearingen
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Patent number: 5763703Abstract: Manufacturing method for hexafluorocyclobutene in which 1,2-dichlorohexafluorocyclobutane is dechlorinated using hydrogen in the presence of a metal oxide and/or silicon oxide catalyst. Manufacturing method for (Z)-1,2,3,3,4,4-hexafluorocyclobutane which carries out the hydrogen-adding reaction (hydrogen reduction) of the raw material, 1,2-dichlorohexafluorocyclobutane, in the presence of a rhodium catalyst, or which carries out vapor-phase hydrogen reduction of hexafluorocyclobutene in the presence of a palladium catalyst.Using this manufacturing method, hexafluorocyclobutene can easily be derived in a single step with high selectivity from 1,2-dichlorohexafluorocyclobutane which can be obtained readily and at a low cost. This method also produces a high yield of (Z)-1,2,3,3,4,4-hexafluorocyclobutane.Type: GrantFiled: February 26, 1996Date of Patent: June 9, 1998Assignee: Daikin Industries Ltd.Inventors: Tatsuo Nakada, Hirokazu Aoyama, Akinori Yamamoto
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Patent number: 5728903Abstract: A method for producing a fluorine-containing silicone compound, which comprises subjecting a compound of the following formula (I) and a hydrosilicone compound having at least one hydrogen atom bonded to a silicon atom to hydrosilylation to obtain a fluorine-containing silicone compound having a R.sup.f --Q--CR.sup.1 R.sup.2 CR.sup.3 HCR.sup.4 R.sup.5 -- group bonded to the silicon atom:R.sup.f --Q--CR.sup.1 R.sup.2 CR.sup.3 .dbd.CR.sup.4 R.sup.5(I)wherein R.sup.f is a monovalent fluorine-containing organic group, Q is a single bond or a bivalent organic group containing no fluorine atom, and each of R.sup.1 to R.sup.5 which are independent of one another, is a hydrogen atom or a monovalent organic group.Type: GrantFiled: January 6, 1997Date of Patent: March 17, 1998Assignee: Asahi Glass Company Ltd.Inventors: Yutaka Furukawa, Mami Kotera, Seisaku Kumai, Kazuya Oharu, Toshihiko Toma
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Patent number: 5716590Abstract: Catalytic dehalogenation (or hydrodehalogenation) of halogen-containing compounds of elements of group IV of the periodic table in the presence of hydrogen is carried out using a finely-dispersed catalytically active material which comprises silicon and at least one transition metal, and which is characterized by high catalytic activity and stability. This process can be used, for example, for synthesizing compounds or alternatively for decomposing halogen-containing compounds, for instance in waste-water or waste-gas purification processes. It is also suitable for dehalogenation (hydrodehalogenation) of halogen-containing silane compounds, for instance of silicon tetrachloride or alkyl trichlorosilane compounds, and the original purity of the silanes used as starting materials is retained by the products. Tetrachlorosilane, for example, can be converted into trichlorosilane.Type: GrantFiled: December 8, 1994Date of Patent: February 10, 1998Assignee: Wacker-Chemie GmbHInventors: Gerhard Roewer, Uwe Paetzold, Holger Walter
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Patent number: 5679875Abstract: The present inventions provide manufacturing methods of 1,1,1,2,3-pentafluoropropene characterized by the reaction of removing HF by means of the contact of 1,1,1,2,3,3-hexafluoropropane in the gas state with active carbon or active carbon added with metallic salt. 1,1,1,2,3-pentafluoropropene can be produced from easily available 1,1,1,2,3,3-hexafluoropropane by cost-effective industrial methods at high yields according to these inventions.The inventions also provide manufacturing methods of 1,1,1,2,3-pentafluoropropane characterized by reducing 1,1,1,2,3-pentafluoropropene with hydrogen under the presence of a hydrogenation catalyst consisting of palladium added with one or more of silver, copper, gold, tellurium, zinc, chromium, molybdenum, and thallium or under the presence of a rhodium catalyst. The desired product can be produced at high reactivities and high selectivities according to these inventions.Type: GrantFiled: November 30, 1994Date of Patent: October 21, 1997Assignee: Daikin Industries, Ltd.Inventors: Hirokazu Aoyama, Eiji Seki
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Patent number: 5621147Abstract: A 1,1,2-trifluoro-2-(trans-4-substituted cyclohexyl)ethylene of the formula (1):R--(A).sub.m --Cy--CF=CF.sub.2 (1)wherein R is a C.sub.1-10 alkyl group, a halogen atom or a cyano group, provided that in the case of the alkyl group, an oxygen atom may be interposed in a carbon-carbon bond of the alkyl group or in a carbon-carbon bond between this alkyl group and A, some of carbon-carbon bonds in the alkyl group may be triple bonds or double bonds, one --CH.sub.2 -- group in the alkyl group may be substituted by a carbonyl group, and some or all of hydrogen atoms in the alkyl group may be substituted by fluorine atoms;Cy is an unsubstituted trans-1,4-cyclohexylene group;A is a trans-1,4-cyclohexylene group, a 1,4-phenylene group or a 1,4-cyclohexenylene group, wherein each of such cyclic groups is unsubstituted or substituted by one or more halogen atoms or cyano groups, one or more =CH-- groups constituting rings of such cyclic groups may be substituted by nitrogen atoms, and one or more --CH.sub.Type: GrantFiled: May 4, 1995Date of Patent: April 15, 1997Assignee: Asahi Glass Company Ltd.Inventors: Osamu Yokokoji, Tamaki Simizu, Seisaku Kumai
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Processes for the preparation of fluorinated olefins and hydrofluorocarbons using fluorinated olefin
Patent number: 5532419Abstract: The invention relates to a cost effective and convenient process for the manufacture of fluorinated olefins of the formula RCF.sub.2 CH.dbd.CH.sub.2 where R is C.sub.x Cl.sub.y F.sub.z and y+z=2x+1. The invention is also directed to a practical process for converting these olefins to hydrofluorocarbons via the catalyzed fluorination with hydrogen fluoride. Hydrofluorocarbons produced via this process have application as solvents among other uses.Type: GrantFiled: September 15, 1995Date of Patent: July 2, 1996Assignee: AlliedSignal Inc.Inventors: Michael Van Der Puy, G. V. Bindu Madhavan, Alagappan Thenappan, Hsueh S. Tung -
Patent number: 5532418Abstract: A method of producing 1,1,1,2,3,3-hexafluoropropane in a characteristic process in which tetrafluorochloropropene is first obtained from the dechlorofluorination (removing ClF) of 1,1,1,2,2-pentafluoro-3,3-dichloropropane and/or 1,1,2,2,3-pentafluoro-1,3-dichloropropane by hydrogen in the presence of a metal oxide catalyst and then the product olefin is fluorinated in the presence of a catalyst. By this method, 1,1,1,2,3,3-hexafluoropropane, which is useful as an action fluid and so on and has a property to help preserving the environment, and an intermediate in its synthesis can be easily produced at low cost.Type: GrantFiled: March 1, 1995Date of Patent: July 2, 1996Assignee: Daikin Industries Ltd.Inventors: Tatsuo Nakada, Hirokazu Aoyama
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Patent number: 5523498Abstract: The fluorine content of an acyclic saturated compound of the formula C.sub.n F.sub.a X.sub.b H.sub.c (wherein each X is independently selected from the group consisting of Cl and Br, and wherein n is 1 to 6, a is 1 to 13, b is 0 to 12, c is 1 to 9, and a+b+c equals 2n+2) is reduced by reacting the acyclic saturated compound with HCl in the vapor phase at an elevated temperature in the presence of a catalyst, the mole ratio of HCl to the acyclic saturated compound being at least about 1:1.Type: GrantFiled: August 25, 1993Date of Patent: June 4, 1996Assignee: E. I. Du Pont de Nemours and CompanyInventors: Leo E. Manzer, V. N. Mallikajuna Rao, Steven H. Swearingen
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Patent number: 5498806Abstract: 1-Chloro-l,2,2-trifluoroethylene or 1,2,2-trifluoroethylene is prepared by reacting 1,1,2-trichloro-1,2,2-trifluoroethane and hydrogen in the presence of a catalyst which comprises at least one metal selected from the group consisting of palladium, rhodium and ruthenium and at least one metal selected from the group consisting of mercury, lead, cadmium, tin, indium, copper, bismuth, thallium and silver and a carrier selected from the group consisting of Al.sub.2 O.sub.3, SiO.sub.2 and activated carbon, whereby selectivities and yields of 1-chloro-1,2,2-trifluoroethylene or 1,2,2-trifluoroethylene are optimized by selecting the kinds of metals and supports.Type: GrantFiled: January 5, 1995Date of Patent: March 12, 1996Assignee: Daikin Industries Ltd.Inventors: Masaru Ichikawa, Ryuichiro Ohnishi, Hisao Suzuki
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Processes for the preparation of fluorinated olefins and hydrofluorocarbons using fluorinated olefin
Patent number: 5481050Abstract: The invention relates to a cost effective and convenient process for the manufacture of fluorinated olefins of the formula RCF.sub.2 CH=CH.sub.2 where R is C.sub.x Cl.sub.y F.sub.z and y+z=2.times.+1. The invention is also directed to a lo practical process for converting these olefins to hydrofluorocarbons via the catalyzed fluorination with hydrogen fluoride. Hydrofluorocarbons produced via this process have application as solvents among other uses.Type: GrantFiled: March 28, 1995Date of Patent: January 2, 1996Assignee: AlliedSignal Inc.Inventors: Michael Van Der Puy, G. V. Bindu Madhavan, Alagappan Thenappan, Hsueh S. Tung -
Processes for the preparation of fluorinated olefins and hydrofluorocarbons using fluorinated olefin
Patent number: 5446217Abstract: The invention relates to a cost effective and convenient process for the manufacture of fluorinated olefins of the formula RCF.sub.2 CH=CH.sub.2 where R is C.sub.x Cl.sub.y F.sub.z and y+z=2x+1. The invention is also directed to a practical process for converting these olefins to hydrofluorocarbons via the catalyzed fluorination with hydrogen fluoride. Hydrofluorocarbons produced via this process have application as solvents among other uses.Type: GrantFiled: May 16, 1994Date of Patent: August 29, 1995Assignee: AlliedSignal Inc.Inventors: Michael Van Der Puy, G. V. Bindu Madhavan, Alagappan Thenappan, Hsueh S. Tung -
Patent number: 5396000Abstract: A process is disclosed for producing CF.sub.3 CHFCH.sub.2 F using vapor phase catalytic dehydrohalogenation to produce CF.sub.3 CF.dbd.CHF and HF, followed by vapor phase catalytic hydrogenation of CF.sub.3 CF.dbd.CHF in the presence of HF.Type: GrantFiled: May 24, 1993Date of Patent: March 7, 1995Assignee: E. I. Du Pont de Nemours and CompanyInventors: Mario J. Nappa, V. N. Mallikarjuna Rao
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Patent number: 5345016Abstract: This invention provides an improved process for the manufacture of 1,1,1,2-tetrafluoroethane by the reaction of HF and trichloroethylene in the presence of a catalyst to form a mixture comprising 2-chloro-1,1,1-trifluoroethane and 1,1,1,2-tetrafluoroethane and, optionally, other organic by-products. The improvement resides in conducting the reaction in a single reaction zone while recovering the 1,1,1,2-tetrafluoroethane from the mixture and recycling the 2-chloro-1,1,1-trifluoroethane and, optionally, other organic by-products from the mixture to the reaction along with trichloroethylene and HF.Type: GrantFiled: February 4, 1993Date of Patent: September 6, 1994Assignee: E. I. Du Pont de Nemours and CompanyInventor: Leo E. Manzer
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Patent number: 5315045Abstract: The invention relates to hydrogenolysis of a chlorofluoroethane XYClC--CClX'Y' or of a chlorofluoroethylene XClC.dbd.CX'Y (where at least one of the symbols X, X', Y and Y' is a fluorine atom and the others are hydrogen or chlorine atoms) which is performed on a mixed catalyst based on copper or silver and on at least one platinum group metal (Ru, Rh, Pd, Os, Ir, Pt), these metals being deposited on a support.Even at low operating temperatures, excellent degrees of conversion and selectivities for fluoroethylenes and/or chlorofluoroethylenes are obtained.Type: GrantFiled: November 6, 1991Date of Patent: May 24, 1994Assignee: Elf Atochem S.A.Inventors: Bernard Berthe, Jean-Marie Cognion
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Patent number: 5283379Abstract: Method for producing TrFE by reaction of R-113 with hydrogen in the presence of a catalyst comprising palladium and at least one selected from gold, tellurium, antimony, bismuth, and arsenic, supported on an inert carrier. TrFE can be produced from R-113 and hydrogen through one-step reaction by use of the catalyst.Type: GrantFiled: April 15, 1993Date of Patent: February 1, 1994Assignee: F. Tech, Inc.Inventors: Takao Saiki, Makoto Sumida, Satohiro Nakano, Kengo Murakami
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Patent number: 5258561Abstract: A chlorofluorination process is disclosed which employs a catalyst comprising chromium oxide for producing halohydrocarbons of the formula CHXFCF.sub.3 (where X is selected from Cl and F). The process is characterized by feeding a combination of components comprising, (i) at least one halohydrocarbon starting compound of the formula CY.sub.3 CH.sub.2 R.sup.1 (where R.sup.1 is selected from the group of H and F and each Y is independently selected from the group of Cl and F), (ii) hydrogen fluoride and (iii) chlorine to a reaction zone; contacting said combination of compounds in said reaction zone with a catalyst comprising chromium oxide at an elevated temperature to produce reaction zone products containing halohydrocarbon reaction products of the formula CHXFCF.sub.3 together with halohydrocarbons of the formula CZ.sub.3 CHR.sup.2 R.sup.3 (wherein R.sup.2 is selected from the group of H and Cl, R.sup.Type: GrantFiled: November 6, 1992Date of Patent: November 2, 1993Assignee: E. I. Du Pont de Nemours and CompanyInventors: Mario J. Nappa, V. N. Mallikarjuna Rao
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Patent number: 5185482Abstract: This invention provides an improved process for the manufacture of 1,1,1,2-tetrafluoroethane by the reaction of HF and trichloroethylene in the presence of a catalyst to form a mixture comprising 2-chloro-1,1,1-trifluoroethane and 1,1,1,2-tetrafluoroethane and, optionally, other organic by-products. The improvement resides in conducting the reaction in a single reaction zone while recovering the 1,1,1,2-tetrafluoroethane from the mixture and recycling the 2-chloro-1,1,1-trifluoroethane and, optionally, other organic by-products from the mixture to the reaction along with trichloroethylene and HF.Type: GrantFiled: January 17, 1992Date of Patent: February 9, 1993Assignee: E. I. Du Pont de Nemours and CompanyInventor: Leo E. Manzer
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Patent number: 5177272Abstract: The invention relates to a process for preparing perhalogenated olefins which comprises reacting a perhalogenated alkane, having at least one atom of a halogen different from fluorine, with a tris-dialkylamino phosphine at temperature not higher than 60.degree. C.Type: GrantFiled: January 23, 1992Date of Patent: January 5, 1993Assignee: Ausimont S.p.A.Inventors: Vittorio Montanari, Darryl D. Desmarteau, Walter Navarrini
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Patent number: 5177271Abstract: Production of vinylidene fluoride by contacting 143a and HCl in the gas phase at 300-700 C.Type: GrantFiled: April 30, 1992Date of Patent: January 5, 1993Assignee: Elf Atochem North America, Inc.Inventors: Maher Y. Elsheikh, Michael S. Bolmer
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Patent number: 5146018Abstract: A process for the hydrogenolysis and/or dehydrohalogenation of fluorohalocarbons and/or fluorohalohydrocarbons by reacting the fluorohalocarbons and/or fluorohalohydrocarbons with a source of hydrogen in the presence of a catalyst, the improvement comprising utilizing a rhenium-containing catalyst, which may, optionally, contain at least one Group VIII metal and may, optionally, be supported.Type: GrantFiled: June 26, 1991Date of Patent: September 8, 1992Assignee: E. I. du Pont de Nemours and CompanyInventors: Carl S. Kellner, V. N. Mallikarjuna Rao, Frank J. Weigert
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Patent number: 5082981Abstract: Perfluorobutadiene and higher alkandienes, with terminal double bonds, are obtained from .alpha.,.omega.-dibromo, .alpha., .omega.,bromo, iodo perfluoroalkanes by dehalofluorination carried out with the aid of an organometallic compounds, in the presence of aprotic solvent belonging to the class of hydrocarbons or polar aprotic solvent belonging to the class of ethers, with limited reaction times.Type: GrantFiled: October 29, 1990Date of Patent: January 21, 1992Assignee: Ausimont S.p.A.Inventors: Gianangelo Bargigia, Vito Tortelli, Claudio Tonelli, Silvana Modena
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Patent number: 5068473Abstract: A process for the hydrogenolysis and/or dehydrohalogenation of fluorohalocarbons and/or fluorohalohydrocarbons by reacting the fluorohalocarbons and/or fluorohalohydrocarbons with a source of hydrogen in the presence of a catalyst, the improvement comprising utilizing a rhenium-containing catalyst, which may, optionally, contain at least one Group VIII metal and may, optionally, be supported.Type: GrantFiled: October 17, 1990Date of Patent: November 26, 1991Assignee: E. I. du Pont de Nemours and CompanyInventors: Carl S. Kellner, V. N. Mallikarjuna Rao, Frank J. Weigert
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Patent number: 5057634Abstract: The present invention relates to multistep syntheses of hexafluoropropylene from acyclic three-carbon hydrocarbons or partially halogenated acyclic three-carbon hydrocarbons. In all these syntheses the first step is a vapor-phase chlorofluorination of the starting material to one or more saturated chlorofluorocarbons. Novel catalysts are also provided.Type: GrantFiled: December 19, 1989Date of Patent: October 15, 1991Assignee: E. I. Du Pont de Nemours and CompanyInventors: James L. Webster, Elrey L. McCann, Douglas W. Bruhnke, Jan J. Lerou, William H. Manogue, Leo E. Manzer, Steven H. Swearingen, Swiatoslaw Trofimenko, Cristobal Bonifaz
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Patent number: 5043491Abstract: The present invention relates to multistep syntheses of hexafluoropropylene from propane, propylene or partially halogenated acyclic three-carbon hydrocarbons. In all these syntheses the first step is a vapor-phase chlorofluorination of the starting material to the unsaturated chlorofluorocarbon CF.sub.3 CClCCl.sub.2.Type: GrantFiled: December 19, 1989Date of Patent: August 27, 1991Assignee: E. I. Du Pont de Nemours and CompanyInventors: James L. Webster, Elrey L. McCann, Douglas W. Bruhnke, Jan J. Lerou, Leo E. Manzer, William H. Manogue, Paul R. Resnick, Swiatoslaw Trofimenko
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Patent number: 5015790Abstract: Fluorine-containing iodo-substituted 1-hexenes, their preparation by the addition of two moles of ethylene to fluorine-containing iodo olefins, and their dehydroiodination to fluorine-containing 1,5-dienes are disclosed.Type: GrantFiled: December 13, 1989Date of Patent: May 14, 1991Assignee: E. I. Du Pont de Nemours and CompanyInventor: Ming-Hong Hung
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Patent number: 4902838Abstract: A process for isomerizing saturated C.sub.2 to C.sub.6 fluorohydrocarbons having lesser thermodynamic stability to fluorohydrocarbons having greater thermodynamic stability comprising contacting in the gaseous phase at a temperature from about 200.degree. C. to about 475.degree. C. at least one C.sub.2 to C.sub.6 saturated fluorohydrocarbon with a catalyst composition comprising an aluminum fluoride.Type: GrantFiled: December 28, 1988Date of Patent: February 20, 1990Assignee: E. I. Du Pont de Nemours and CompanyInventors: Leo E. Manzer, V. N. Mallikarjuna Rao
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Patent number: 4876405Abstract: A process for preparing fluoroethylenes and chlorofluoroethylenes starting from chlorofluoroethanes and hydrogen, carried out in gas phase at a temperature ranging from 150.degree. to 600.degree. C., in the presence of a hydrogenation catalyst, wherein the chlorofluoroethanes have at least one chlorine atom on each carbon atom, and the catalyst is selected preferably from palladium, nickel, chromium, cobalt, platinum, copper and mixtures thereof, and it is utilized either as such or inert materials.Type: GrantFiled: July 13, 1987Date of Patent: October 24, 1989Assignee: Ausimont S.p.A.Inventor: Claudio Gervasutti
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Patent number: 4820884Abstract: A method for preparing an unsaturated fluorocarbon by defluorinating a perfluoroalkane employing activated carbon.Type: GrantFiled: November 24, 1987Date of Patent: April 11, 1989Assignee: E. I. Du Pont de Nemours and CompanyInventor: Frank J. Weigert
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Patent number: 4818513Abstract: A gaseous feed stream comprising hydrogen fluoride and 1,1-difluoroethane is contacted with liquid organic barrier material in a condensing zone to partially condense the feed stream. The gaseous phase remaining after the partial condensation comprises most of the 1,1-difluoroethane originally present in the feed stream while the liquid condensate comprises most of the hydrogen fluoride originally present in the feed stream. The gaseous phase and the liquid condensate are removed from the condensing zone as separate streams. Less than about 50 percent of the 1,1-difluoroethane originally present in the feed stream reacts with hydrogen fluoride to form 1,1,1-trifluoroethane during the partial condensation and the removal of the separate streams from the condensing zone. The preferred liquid organic barrier material is 1,1,-trifluoroethane.Type: GrantFiled: December 21, 1987Date of Patent: April 4, 1989Assignee: PPG Industries, Inc.Inventors: Fred C. Trager, J. Douglas Mansell, W. Eugene Wimer
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Patent number: 4654448Abstract: Perfluorobutadiene and higher perfluoroalkadienes, with terminal double bonds, are obtained from .alpha.,.omega.-diiodoperfluoroalkanes by deiodofluorination realized by using an organometallic compound, in the presence either of an aprotic solvent belonging to the class of hydrocarbons, or of an aprotic polar solvent, with short reaction times.Type: GrantFiled: May 28, 1986Date of Patent: March 31, 1987Assignee: Ausimont S.p.A.Inventors: Gianangelo Bargigia, Vito Tortelli, Claudio Tonelli
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Patent number: 4613709Abstract: The pyrolytic dehydrochlorination of haloalkanes is carried out with an initiator comprising chiefly decachlorobutane and octachloro-1-butene.The process can be applied particularly to the production of chloroethylenes from the corresponding polychloroethanes.Type: GrantFiled: August 15, 1985Date of Patent: September 23, 1986Assignee: Solvay & Cie.Inventor: James Franklin
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Patent number: 4613681Abstract: This invention relates to a process for the preparation of a fluorinated compound of the general formulaR.sub.F C.sub.2 H.sub.4 ORcomprising reacting an iodide of the general formula R.sub.F C.sub.2 H.sub.4 I with a percarboxylic acid of the general formula R.sup.1 CO.sub.3 H at a temperature and for a time sufficient to form said fluorinated compound; in said formulae R.sub.F is a straight or branched chain perfluorinated radical containing 1 to 20 C atoms, R is a hydrogen atom or --COR.sup.1, and R.sup.1 is a hydrogen atom or an aliphatic or aromatic hydrocarbon radical.Type: GrantFiled: June 30, 1980Date of Patent: September 23, 1986Assignee: Produits Chimiques Ugine KuhlmannInventors: Louis Foulletier, Andre Lantz