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1361results about "Preparation by hydrogen halide split-off" patented technology
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Method for producing fluorinated organic compounds
ActiveUS20070197842A1Preparation by hydrogen halide split-offPreparation by halogen replacementPtru catalystDistillation
Disclosed are processes for the production of fluorinated olefins, preferably adapted to commercialization of CF3CF═CH2 (1234yf). Three steps may be used in preferred embodiments in which a feedstock such as CCl2═CClCH2Cl (which may be purchased or synthesized from 1,2,3-trichloropropane) is fluorinated (preferably with HF in gas-phase in the presence of a catalyst) to synthesize a compound such as CF3CCl═CH2, preferably in a 80-96% selectivity. The CF3CCl═CH2 is preferably converted to CF3CFClCH3 (244-isomer) using a SbCl5 as the catalyst which is then transformed selectively to 1234yf, preferably in a gas-phase catalytic reaction using activated carbon as the catalyst. For the first step, a mixture of Cr2O3 and FeCl3 / C is preferably used as the catalyst to achieve high selectivity to CF3CCl═CH2 (96%). In the second step, SbCl5 / C is preferably used as the selective catalyst for transforming 1233xf to 244-isomer, CF3CFClCH3. The intermediates are preferably isolated and purified by distillation and used in the next step without further purification, preferably to a purity level of greater than about 95%.
Owner:HONEYWELL INT INC
Integrated process to produce 2,3,3,3-tetrafluoropropene
ActiveUS20090240090A1Maximize raw material utilizationMaximize product yieldPreparation by hydrogen halide split-offPreparation by halogen halide additionChromium2,3,3,3-Tetrafluoropropene
A method for preparing 2,3,3,3-tetrafluoroprop-1-ene comprising (a) providing a starting composition comprising at least one compound having a structure selected from Formulae I, II and III:CX2═CCl—CH2X (Formula I)CX3—CCl═CH2 (Formula II)CX3—CHCl—CH2X (Formula III)wherein X is independently selected from F, Cl, Br, and I, provided that at least one X is not fluorine;(b) contacting said starting composition with a first fluorinating agent to produce a first intermediate composition comprising 2-chloro-3,3,3-trifluoropropene and a first chlorine-containing byproduct; (c) contacting said first intermediate composition with a second fluorinating agent to produce a second intermediate composition comprising 2-chloro-1,1,1,2-tetrafluoropropane and a second chlorine-containing byproduct; and (d) catalytically dehydrochlorinating at least a portion of said 2-chloro-1,1,1,2-tetrafluoropropane to produce a reaction product comprising 2,3,3,3-tetrafluoroprop-1-ene.
Owner:HONEYWELL INT INC
Processes for production and purification of hydrofluoroolefins
ActiveUS20060106263A1High selectivityPreparation by hydrogen halide split-offHydrogen fluorideHydrogen fluoridePurification methods
Owner:THE CHEMOURS CO FC LLC
Process for producing fluoropropenes
InactiveUS7230146B2Simplifies isolationPreparation by hydrogen halide split-offPreparation by halogen halide additionHalogenHydrogen
Dehydrohalogenation processes for the preparation of fluoropropenes from corresponding halopropanes, in which the fluoropropenes have the formula CF3CY═CXNHP, wherein X and Y are independently hydrogen or a halogen selected from fluorine, chlorine, bromine and iodine; and N and P are independently integers equal to 0, 1 or 2, provided that (N+P)=2.
Owner:HONEYWELL INT INC
Integrated process to produce 2,3,3,3-tetrafluoropropene
ActiveUS8058486B2Maximize utilizationYield maximizationPreparation by hydrogen halide split-offPreparation by halogen halide additionChromium2,3,3,3-Tetrafluoropropene
Owner:HONEYWELL INT INC
Processes for synthesis of tetrafluoropropene
ActiveUS7189884B2Preparation by hydrogen halide split-offPreparation by halogen halide additionBromineCombinatorial chemistry
Disclosed in one embodiment is a process for the synthesis of 1,3,3,3-tetrafluoropropene that comprises (a) reacting a compound of formula (I) X1X2 with a compound of formula (II) CF3CH═CH2 to produce a reaction product comprising a compound of formula (III) CF3CHX1CH2X2, wherein X1 and X2 are each independently selected from the group consisting of hydrogen, chlorine, bromine and iodine, provided that X1 and X2 are not both hydrogen; (b) when X2 in formula (III) is not fluorine, fluorinating the compound of formula (III) to produce a reaction product comprising a compound of formula (III) wherein X1 is as described above and X2 is fluorine; and (c) exposing said compound of formula (III) to reaction conditions effective to convert said compound to 1,3,3,3-tetrafluoropropene.
Owner:HONEYWELL INT INC
Azeotrope compositions comprising 2,3,3,3-tetrafluoropropene and hydrogen fluoride and uses thereof
ActiveUS20070100175A1Preparation by hydrogen halide split-offHydrogen fluorideHydrogen fluoridePhysical chemistry
Owner:THE CHEMOURS CO FC LLC
Process for manufacture of fluorinated olefins
A process for the production of fluorinated olefins, preferably fluorinated propenes, by contacting a feed stream containing a fluorinated olefin and hydrogen with a first amount of catalyst to produce the hydrofluorocarbon, wherein a first exit stream contains unreacted fluorinated olefin and hydrogen; contacting the first exit stream with a second amount of catalyst to produce a hydrofluorocarbon, wherein the second amount of catalyst is preferably greater than the first amount of catalyst; and contacting the hydrofluorocarbon with a catalyst for dehydrohalogenation to produce a product stream of fluorinated olefin.
Owner:HONEYWELL INT INC
Process for producing 1,1,1,3,3-pentafluoro-propane and/or 1-chloro-3,3,3-trifluoropropene
InactiveUS6403847B1Point becomes highManufactured continuously and efficientlyPreparation by dehalogenationPreparation by hydrogen halide split-offBoiling pointPropane
One or more materials selected from 1,1,1,3,3-pentachloropropane, 1,1,3,3-tetrachloropropene and 1,3,3,3-tetrachloropropene are used as the specific materials described above. Before submitting the materials and HF to a fluorination reaction, almost all water is removed from them.To continuously manufacture useful intended products efficiently as well as to prevent deactivation of the catalyst and the accumulation of organic substances with high boiling points when manufacturing said useful 1,1,1,3,3-pentafluoropropane and / or 1-chloro-3,3,3-trifluoropropene, by fluorinating the specific materials with HF in the presence of a catalyst.
Owner:DAIKIN IND LTD
Method for producing fluorinated organic compounds
ActiveUS8084653B2Preparation by hydrogen halide split-offPreparation by halogen replacementActivated carbonGas phase
Disclosed are processes for the production of fluorinated olefins, preferably adapted to commercialization of CF3CF═CH2 (1234yf). Three steps may be used in preferred embodiments in which a feedstock such as CCl2═CClCH2Cl (which may be purchased or synthesized from 1,2,3-trichloropropane) is fluorinated (preferably with HF in gas-phase in the presence of a catalyst) to synthesize a compound such as CF3CCl═CH2, preferably in a 80-96% selectivity. The CF3CCl═CH2 is preferably converted to CF3CFClCH3 (244-isomer) using a SbCl5 as the catalyst which is then transformed selectively to 1234yf, preferably in a gas-phase catalytic reaction using activated carbon as the catalyst. For the first step, a mixture of Cr2O3 and FeCl3 / C is preferably used as the catalyst to achieve high selectivity to CF3CCl═CH2 (96%). In the second step, SbCl5 / C is preferably used as the selective catalyst for transforming 1233xf to 244-isomer, CF3CFClCH3. The intermediates are preferably isolated and purified by distillation and used in the next step without further purification, preferably to a purity level of greater than about 95%.
Owner:HONEYWELL INT INC
Integrated process to produce 2,3,3,3-tetrafluoropropene
InactiveCN101597209APreparation by hydrogen halide split-offChemical industryHydrogen chlorideChlorine
A method for preparing 2,3,3,3-tetrafluoroprop-1-ene comprising (a) providing a starting composition comprising at least one compound having a structure selected from Formulae I, II and III: CX 2 =CCl-CH 2 X (Formula I) CX 3 -CCl=CH 2 (Formula II) CX 3 -CHCl-CH 2 X (Formula III) wherein X is independently selected from F, Cl, Br, and I, provided that at least one X is not fluorine; (b) contacting said starting composition with a first fluorinating agent to produce a first intermediate composition comprising 2-chloro-3,3,3-trifluoropropene and a first chlorine-containing byproduct; (c) contacting said first intermediate composition with a second fluorinating agent to produce a second intermediate composition comprising 2-chloro-1,1,1,2-tetrafluoropropane and a second chlorine-containing byproduct; and (d) catalytically dehydrochlorinating at least a portion of said 2-chloro-1,1,1,2-tetrafluoropropane to produce a reaction product comprising 2,3,3,3-tetrafluoroprop-1-ene.
Owner:HONEYWELL INT INC
Process for the manufacture of 1,3,3,3-tetrafluoropropene
ActiveUS20050020862A1Physical/chemical process catalystsPreparation by hydrogen halide split-offPentafluoropropaneChemistry
The invention provides an economic process for the manufacture of 1,3,3,3-tetrafluoropropene (HFC-1234ze) by a two stage process. A hydrofluorination of 1-chloro-3,3,3-trifluoropropene (HCFC-1233zd) into 1-chloro-1,3,3,3-tetrafluoropropane (HCFC-244fa) and 1,1,1,3,3-pentafluoropropane (HFC-245fa) is conducted, followed by the dehydrochlorination of HCFC-244fa and dehydrofluorination of HFC-245fa into HFC-1234ze.
Owner:HONEYWELL INT INC
METHOD FOR PRODUCING 2-CHLORO-3,3,3-TRIFLUOROPROPENE (HCFC-1233xf)
ActiveUS20090030244A1Speed up the conversion processLess resource-intensivePreparation by hydrogen halide split-offPreparation by halogen replacementHydrogen fluorideGas phase
The present invention relates to an improved method for manufacturing 2-chloro-3,3,3,-trifluoropropene (HCFC-1233xf) by reacting 1,1,2,3-tetrachloropropene, 1,1,1,2,3-pentachloropropane, and / or 2,3,3,3-tetrachloropropene with hydrogen fluoride, in a vapor phase reaction vessel in the presence of a vapor phase fluorination catalyst and stabilizer. HCFC-1233xf is an intermediate in the production of 2,3,3,3-tetrafluoropropene (HFO-1234yf) which is a refrigerant with low global warming potential.
Owner:HONEYWELL INT INC
PROCESS TO MANUFACTURE 2-CHLORO-1,1,1,2-TETRAFLUOROPROPANE (HCFC-244bb)
InactiveUS20100036179A1Preparation by dehalogenationPreparation by hydrogen halide split-offHydrogen fluorideHydrogen chloride
The invention provides an improved process to manufacture 2-chloro-1,1,1,2-tetrafluoropropane (HCFC-244bb) by reacting 2-chloro-3,3,3,-trifluoropropene (HCFO-1233xf) with hydrogen fluoride, in a liquid phase reaction in the presence of hydrogen chloride and a liquid phase fluorination catalyst. The hydrogen chloride is added into the reaction from an external source at a pressure of about 100 psig or more. The HCFC-244bb is an intermediate in the production of 2,3,3,3-tetrafluoropropene-1 (HFO-1234yf).
Owner:HONEYWELL INT INC
Extrudable multiphase composition comprising a lamellar phase and an isotropic phase
InactiveUS6534456B2Cosmetic preparationsPreparation by hydrogen halide split-offLotionLamellar phase
Owner:UNILEVER HOME & PERSONAL CARE USA DIV OF CONOPCO IN C
PROCESS FOR THE PRODUCTION OF HFO TRANS-1234ze FROM HFC-245fa
ActiveUS20080051611A1Preparation by hydrogen halide split-offPreparation by halogen halide additionHydrogen fluoride1,3,3,3-Tetrafluoropropene
This invention relates a process for the manufacture of the HFO trans-1,3,3,3-tetrafluoropropene (HFO trans-1234ze). More particularly, the invention pertains to a process for the manufacture of the HFO trans-1234ze by first dehydrofluorinating 1,1,1,3,3-pentafluoropropane to thereby produce a mixture of cis-1,3,3,3-tetrafluoropropene, trans-1,3,3,3-tetrafluoropropene and hydrogen fluoride. Then optionally recovering hydrogen fluoride and then recovering trans-1,3,3,3-tetrafluoropropene.
Owner:HONEYWELL INT INC
Process for synthesis of fluorinated olefins
ActiveUS20090099396A1Preparation by dehalogenationPreparation by hydrogen halide split-offHydrogenBromine
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 processes of the present invention in accordance with one embodiment generally comprise:(a) reacting a compound of formula (I)X1X2 (I)with a compound of formula (II)CX1X2X3CX1═CX1X2 (II)to produce a reaction product comprising a compound of formula (III)CF3CHX1CH2X2 (III), and(b) exposing said compound of formula (III) to reaction conditions effective to convert said compound of formula (III) to a compound of formula (IV)CF3CZ=CH2 (IV)wherein X1, X2, and X3 are each independently selected from the group consisting of hydrogen, chlorine, bromine, fluorine and iodine, provided that X1 and X2 in formula (I) are not both hydrogen and Z is Cl, I, Br, or F.
Owner:HONEYWELL INT INC
Extrudable multiphase composition comprising a lamellar phase and an isotropic phase
InactiveUS20020010110A1Cosmetic preparationsPreparation by hydrogen halide split-offLotionLamellar phase
The invention relates to a plurality of liquid cleansing compositions having at least one lamellar phase which possesses a lotion-like appearance conveying signals of enhanced moisturization and at least one abutting isotropic phase having enhanced cleansing ability. The inventive composition is contained in a partitionless container in one embodiment conveying signals of a plurality of compositions. This multiphase composition is stable upon storage and is dispensed as a striped product where typically one stripe has primarily a cleansing function and a second stripe has primarily a moisturization function.
Owner:UNILEVER HOME & PERSONAL CARE USA DIV OF CONOPCO IN C
Method for producing fluorinated organic compounds
ActiveUS20070112230A1Efficient preparationPreparation by hydrogen halide split-offPreparation by halogen additionSimple Organic CompoundsOrganic compound
Owner:HONEYWELL INT INC
Process for manufacture of fluorinated olefins
A process for the production of fluorinated olefins, preferably fluorinated propenes, by contacting a feed stream containing a fluorinated olefin and hydrogen with a first amount of catalyst to produce the hydrofluorocarbon, wherein a first exit stream contains unreacted fluorinated olefin and hydrogen; contacting the first exit stream with a second amount of catalyst to produce a hydrofluorocarbon, wherein the second amount of catalyst is preferably greater than the first amount of catalyst; and contacting the hydrofluorocarbon with a catalyst for dehydrohalogenation to produce a product stream of fluorinated olefin.
Owner:HONEYWELL INT INC
Process for preparing halogenated alkanes
InactiveUS7094936B1High selectivityBig advantagePreparation by hydrogen halide split-offPreparation by halogen replacementAlkaneLewis acid catalysis
Methods and materials are provided for the production and purification of halogenated compounds and intermediates in the production of 1,1,1,3,3-pentafluoropropane. In a preferred embodiment, the process steps include: (1) reacting carbon tetrachloride with vinyl chloride to produce 1,1,1,3,3-pentachloropropane; (2) dehydrochlorinating the 1,1,1,3,3-pentachloropropane with a Lewis acid catalyst to produce 1,1,3,3-tetrachloropropene; (3) fluorinating the 1,1,3,3-tetrachloropropene to produce 1-chloro-3,3,3-trifluoropropene; (4) fluorinating the 1-chloro-3,3,3-trifluoropropene to produce a product mixture containing 1,1,1,3,3-pentafluoropropane; and (5) separating 1,1,1,3,3-pentafluoropropane from by-products.
Owner:EI DU PONT DE NEMOURS & CO
Method for prolonging a catalyst's life during hydrofluorination
ActiveUS20100331583A1Low costHigh purityPreparation by hydrogen halide split-offPreparation by halogen halide additionChemistryHydrogen fluoride
The invention provides an improved process to manufacture 2-chloro-1,1,1,2-tetrafluoropropane (HCFC-244bb) by reacting 2-chloro-3,3,3,-trifluoropropene (HCFO-1233xf) with hydrogen fluoride, in the presence of a fluorination catalyst, where by using 2-chloro-3,3,3,-trifluoropropene (HCFO-1233xf) of high purity, the need to add an oxidizing agent (typically chlorine) to keep the catalyst active can be avoided. The HCFC-244bb is then used as an intermediate in the production of 2,3,3,3-tetrafluoropropene-1 (HFO-1234yf).
Owner:HONEYWELL INT INC
Method for producing 2-chloro-3,3,3,-trifluoropropene (HCFC-1233xf)
ActiveUS7795480B2Preparation by hydrogen halide split-offPreparation by halogen replacementHydrogen fluorideGas phase
The present invention relates to an improved method for manufacturing 2-chloro-3,3,3,-trifluoropropene (HCFC-1233xf) by reacting 1,1,2,3-tetrachloropropene, 1,1,1,2,3-pentachloropropane, and / or 2,3,3,3-tetrachloropropene with hydrogen fluoride, in a vapor phase reaction vessel in the presence of a vapor phase fluorination catalyst and stabilizer. HCFC-1233xf is an intermediate in the production of 2,3,3,3-tetrafluoropropene (HFO-1234yf) which is a refrigerant with low global warming potential.
Owner:HONEYWELL INT INC
Process for the manufacture of 1,3,3,3-tetrafluoropropene
ActiveUS7829748B1Physical/chemical process catalystsPreparation by hydrogen halide split-offAlkaline earth metalOxidation state
The invention provides an economic process for the manufacture of 1,3,3,3-tetrafluoropropene (HFO-1234ze) by a two stage process. A vapor phase hydrofluorination of 1-chloro-3,3,3-trifluoropropene (HCFC-1233zd) into 1-chloro-1,3,3,3-tetrafluoropropane (HCFC-244fa) and / or 1,1,1,3,3-pentafluoropropane (HFC-245fa) is conducted, followed by the thermal dehydrochlorination of HCFC-244fa and dehydro fluorination of HFC-245fa into HFO-1234ze in the presence of a catalyst which comprises one or more of alkali metal halides, alkaline earth metal halides, halogenated metal oxides, zero oxidation state metals, zinc halides, palladium halides, and activated carbon.
Owner:HONEYWELL INT INC
Continuous low-temperature process to produce trans-1-chloro-3,3,3-trifluoropropene
ActiveUS20120059199A1Slow reaction rateYield maximizationChlorine/hydrogen-chloridePreparation by hydrogen halide split-offIsomerizationUnit operation
Disclosed is process for the production of (E) 1-chloro-3,3,3-trifluoropropene (HCFO-1233zd(E)) by conducting a continuous reaction without the use of a catalyst. Also disclosed is an integrated system for producing hydrofluoro olefins, particularly 1233zd(E). The manufacturing process includes six major unit operations: (1) a fluorination reaction of HCC-240fa (in continuous or semi-batch mode) using HF with simultaneous removal of by-product HCl and the product 1233zd(E); (2) recycle of unreacted HCC-240fa and HF together with under-fluorinated by-products back to (1); (3) separation and purification of by-product HCl; (4) separation of excess HF back to (1); (5) purification of final product, 1233zd(E); and (6) isomerization of by-product 1233zd(Z) to 1233zd(E) to maximize the process yield.
Owner:HONEYWELL INT INC
Process for producing 2,3,3,3-tetrafluoropropene
ActiveUS20120065437A1Increase productionPreparation by hydrogen halide split-offHalogenated hydrocarbon separation/purificationImpurity2,3,3,3-Tetrafluoropropene
The instant invention relates to a process and method for manufacturing 2,3,3,3-tetrafluoropropene by dehydrohalogenating a reactant stream of 2-chloro-1,1,1,2-tetrafluoropropane that is substantially free from impurities, particularly halogenated propanes, propenes, and propynes.
Owner:HONEYWELL INT INC
Processes for synthesis of 1,3,3,3-tetrafluoropropene
InactiveUS7345209B2Preparation by dehalogenationPreparation by hydrogen halide split-off1,3,3,3-TetrafluoropropeneBromine
Disclosed is a process for the synthesis of 1,3,3,3-tetrafluoropropene that comprises, in one preferred embodiment, providing a compound of the formula CF3CH2CHFX, wherein X is a selected from the group consisting of chlorine, bromine and iodine, and exposing said compound to reaction conditions effective to convert said compound to 1,3,3,3-tetrafluoropropene. Other processes for forming 1,3,3,3-tetrafluoropropene are also disclosed.
Owner:HONEYWELL INT INC
Method for producing fluorinated organic compounds
ActiveUS20060258891A1Cheap purificationSeparation economicalPreparation by hydrogen halide split-offPhysical/chemical process catalystsSimple Organic CompoundsGas phase
A method for preparing fluorinated organic compounds wherein at least one fluorinated olefin is reacted with methyl fluoride in the gas-phase and in the presence of a Lewis Acid catalyst to form at least one product having at least 3 carbon atoms.
Owner:HONEYWELL INT INC
Preparation of fluorinated olefins via catalytic dehydrohalogenation of halogenated hydrocarbons
ActiveUS20090043136A1Physical/chemical process catalystsPreparation by hydrogen halide split-offHalohydrocarbonHydrogen atom
A process for making a fluorinated olefin having the step of dehydrochlorinating a hydrochlorofluorocarbon having at least one hydrogen atom and at least one chlorine atom on adjacent carbon atoms, preferably carried out in the presence of a catalyst selected from the group consisting of (i) one or more metal halides, (ii) one or more halogenated metal oxides, (iii) one or more zero-valent metals / metal alloys, (iv) a combination of two or more of the foregoing.
Owner:HONEYWELL INT INC
Azeotrope compositions comprising E-1,3,3,3-tetrafluoropropene and hydrogen fluoride and uses thereof
ActiveUS20070100173A1Preparation by hydrogen halide split-offHydrogen fluorideHydrogen fluoride1,3,3,3-Tetrafluoropropene
Disclosed herein are azeotrope and near-azeotrope compositions comprising E-1,3,3,3-tetrafluoropropene and hydrogen fluoride. These azeotrope and near-azeotrope compositions are useful in processes to produce E-1,3,3,3-tetrafluoropropene and in processes to purify E-1,3,3,3-tetrafluoropropene from mixtures of E-1,3,3,3-tetrafluoropropene with 1,1,1,3,3-pentafluoropropane and / or with hydrogen fluoride.
Owner:THE CHEMOURS CO FC LLC
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