| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 570151000 | Isomerization | 32 |
| 20090270660 | PROCESS FOR GEOMETRIC ISOMERIZATION OF HALOGENATED OLEFINS - Disclosed are processes for the conversion of isomerizable halogenated C2-C6 olefins from one geometric form to a more preferred geometric form. Preferred process aspects comprise converting C2-C6 olefin in a cis-form to a trans-form comprising exposing the cis-form of the compound, preferably contained in process stream, to conditions effective to convert at least about 50 percent, and even more preferably at least about 70 percent, of the cis-form compound to the trans-form compound. Preferably the catalyst comprises at least one Lewis acid metal fluoride. | 10-29-2009 |
| 20100152503 | Copper-Substituted Chromium Oxide Compositions, Their Preparation, and Their Use as Catalysts and Catalyst Precursors - A crystalline alpha-chromium oxide where from about 0.05 atom % to about 5 atom % of the chromium atoms in the alpha-chromium oxide lattice are replaced by divalent copper (Cu | 06-17-2010 |
| 20100152504 | Isomerization of 1-Chloro-3,3,3-Trifluoropropene - Disclosed are processes for an isomerization reaction between (E)1-chloro-3,3,3-trifluoropropene and (Z)1-chloro-3,3,3-trifluoropropene. Some of the disclosed processes include the step of contacting a feed stream with a heated surface, where the feed stream includes (E)1-chloro-3,3,3-trifluoropropene, (Z)1-chloro-3,3,3-trifluoropropene or mixtures thereof. The resulting product stream includes (E)1-chloro-3,3,3-trifluoropropene and (Z)1-chloro-3,3,3-trifluoropropene, where the ratio of (E) isomer to (Z) isomer in the product stream is different than the ratio feed stream. The (E) and (Z) isomers in the product stream may be separated from one another. | 06-17-2010 |
| 20100185027 | Isomerization of 1,1,3,3-Tetrafluoropropene - The present invention involves methods for isomerization of 1234zc. Also provided are methods for managing 1,1,3,3-tetrafluoropropene produced as a byproduct in a process for synthesizing trans-1,3,3,3-tetrafluoropropene from 245fa, wherein 1234zc is converted into trans/cis-1234ze with the help of a catalyst in the absence of HF and in an isomerization reactor, or is converted into 1234zc and/or 245fa with the help of a catalyst in the presence of HF in a separate reactor or preferably in the same reactor of 245fa dehydrofluorination. | 07-22-2010 |
| 20100185028 | METHOD FOR PRODUCING 1, 1-DICHLORO-2,2,3,3,3-PENTAFLUOROPROPANE - 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). | 07-22-2010 |
| 20100191024 | Preparation of halogen and hydrogen containing alkenes over metal fluoride catalysts - Halogenated alkenes, especially fluorinated alkenes can be prepared from halogenated and fluorinated alkanes, respectively, by dehydrohalogenation or dehydrofluorination in the presence of a high-surface metal fluoride or oxifluoride. Preferably, trifluoroethylene, pentafluoropropene, tetrafluorobutenes or trifluorobutadiene are prepared. Aluminium fluoride is highly suitable. The metal fluoride or oxifluoride can be applied supported on a carrier. | 07-29-2010 |
| 20100197979 | Catalytic Isomerization Between E and Z Isomers of 1,2,3,3,3 Pentafluoropropene Using Aluminum Catalyst - A starting material comprising 1,2,3,3,3-pentafluoropropene is contacted with an aluminum chlorofluoride (AlCl | 08-05-2010 |
| 20100197980 | Catalytic Isomerization Between E and Z Isomers of 1,2,3,3,3 Pentafluoropropene Using Aluminum Catalyst - Disclosed herein is a process comprising: contacting a starting material comprising 1,2,3,3,3-pentafluoropropene in the vapor phase with an aluminum catalyst to obtain a final product, wherein the Z/E ratio of 1,2,3,3,3-pentafluoropropene of the final product is increased or decreased relative to the Z/E ratio of 1,2,3,3,3-pentafluoropropene in said starting material. | 08-05-2010 |
| 20110152585 | PROCESS FOR PREPARING 2,3,3,3-TETRAFLUOROPROPENE - The present invention provides a process for producing 2,3,3,3-tetrafluoropropene including the step of dehydrofluorinating 1,1,1,2,3-pentafluoropropane, wherein 1,3,3,3-tetrafluoropropene and 1,1,3,3,3-pentafluoropropane are supplied together with 1,1,1,2,3-pentafluoropropane to a reactor containing a catalyst to simultaneously perform dehydrofluorination reaction and isomerization reaction. According to the process of the present invention, 2,3,3,3-tetrafluoropropene (HFO-1234yf) can be efficiently produced by effectively using the by-products of the dehydrofluorination reaction. | 06-23-2011 |
| 20110172469 | METHOD FOR PRODUCING 1, 1-DICHLORO-2,2,3,3,3-PENTAFLUOROPROPANE - 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). | 07-14-2011 |
| 20110218369 | PROCESS FOR THE MANUFACTURE OF HYDROFLUOROOLEFINS - The invention relates to a process for manufacturing 1,1,1,2-tetrafluoropropene (1234yf, CF | 09-08-2011 |
| 20110237843 | PROCESS FOR THE MANUFACTURE OF HEXAFLUORO-2-BUTENE - Hexafluoro-2-butene (HFO-1336) is a low global warming potential blowing agent, refrigerant and solvent. This invention provides methods for making the compound, including the cis-isomer, from the readily available raw materials, carbon tetrachloride and ethylene. The trans-isomer formed in the process can be isomerized into cis-isomer by the use of an isomerization catalyst. | 09-29-2011 |
| 20110237844 | METHOD FOR MAKING HEXAFLUORO-2-BUTENE - Hexafluoro-2-butene (HFO-1336) is a low global warming potential blowing agent, refrigerant and solvent. This invention provides a method for making the compound, including the cis-isomer, from the readily available raw materials, carbon tetrachloride and 3,3,3-trifluoropropene. The trans-isomer formed in the process can be isomerized into cis-isomer by the use of an isomerization catalyst. | 09-29-2011 |
| 20120004474 | PROCESS FOR PRODUCING 1, 1-DICHLORO-2, 2, 3, 3, 3-PENTAFLUOROPROPANE - To provide a process for producing, at a high content ratio, 1,1-dichloro-2,2,3,3,3-pentafluoropropane (HCFC-225ca) which is useful as e.g. a starting material to obtain 1,1-dichloro-2,3,3,3-tetrafluoropropene (CFO1214ya). | 01-05-2012 |
| 20120271069 | PROCESS FOR PRODUCING TRANS-1233ZD - Trans-1233zd, the trans-isomer of 1-chloro-3,3,3-trifluoropropene (HCFO-1233zd) can be used as blowing agents, solvents, cleaning agents, as well as monomers of macromolecule compounds, and can be prepared through the dehydrochlorination of 1,1,1-trifluoro-3,3-dichloropropane (HCFC-243fa) with the help of a catalyst. The present invention is directed to an integrated process is proposed to produce trans-1233zd from 243fa, which is consisted of the following four major unit operations: (1) Catalytic dehydrochlorination of 243fa into trans/cis-1233zd, (2) HCl recovery, (3) Catalytic isomerization of cis-1233zd into trans-1233zzd, and (4) Isolation of trans-1233zd. | 10-25-2012 |
| 20130079562 | PROCESS - A process for isomerising a (hydrohalo)fluoroalkene, the process comprising contacting the (hydrohalo)fluoroalkene with a catalyst a catalyst which is a chromia-containing catalyst supported on AlF | 03-28-2013 |
| 20130150632 | PROCESS FOR CIS-1-CHLORO-3,3,3-TRIFLUOROPROPENE - Disclosed is a process for the preparation of cis-1-chloro-3,3,3-trifluoropropene (cis-1233zd) comprising the steps of (a) providing CF | 06-13-2013 |
| 20130158304 | METHOD FOR PRODUCING A FLUOROCOMPOUND - An object is to provide a method for producing 1,1,1,4,4,4-hexafluoro-2-butene with high efficiency, which is suitable for a flow reaction, and cis-1,1,1,4,4,4-hexafluoro-2-butene can be efficiently obtained when isomerization of hexafluoro-1,3-butadiene is conducted using a catalyst and the resultant mixture is successively subjected to catalytic hydrogenation to produce cis-1,1,1,4,4,4-hexafluoro-2-butene, wherein the whole process is performed by a flow catalytic reaction. | 06-20-2013 |
| 20130253234 | CATALYTIC ISOMERIZATION OF 2,3,3,3-TETRAFLUOROPROPENE - An isomerization process is disclosed. The process involves contacting 2,3,3,3-tetrafluoropropene with a suitable catalyst in a reaction zone to produce a product mixture comprising 1,3,3,3-tetrafluoropropene. | 09-26-2013 |
| 20130261353 | INTEGRATED PROCESS TO COPRODUCE TRANS-1-CHLORO-3,3,3-TRIFLUOROPROPENE, TRANS-1,3,3,3-TETRAFLUOROPROPENE, AND 1,1,1,3,3-PENTAFLUOROPROPANE - Disclosed is an integrated manufacturing process to co-produce (E) 1-chloro-3,3,3-trifluoropropene, (E) 1,3,3,3-tetrafluoropropene, and 1,1,1,3,3-pentafluoro-propane starting from a single starting feed material or a mixture of unsaturated hydrochloro-carbon feed materials comprising 1,1,1,3-tetrachloropropene and/or 1,1,3,3-tetrachloro-propene. The process includes a combined liquid or vapor phase reaction/purification operation which directly produces (E) 1-chloro-3,3,3-trifluoro-propene (1233zd (E)) from these feed materials, which may also include 240fa. In the second liquid phase fluorination reactor 1233zd (E) is contacted with HF in the presence of catalyst to produce 1,1,1,3,3-pentafluoropropane (245fa) with high conversion and selectivity. A third reactor is used for dehydrofluorination of 245fa to produce (E) 1,3,3,3-tetrafluoro-propene (1234ze (E)) by contacting in the liquid phase with a caustic solution or in the vapor phase using a dehydrofluorination catalyst. This operation may be followed by one or more purification processes to recover the 1234ze (E) product. | 10-03-2013 |
| 20130310614 | METHODS FOR PRODUCING 1-CHLORO-3,3,3-TRIFLUOROPROPENE FROM 2-CHLORO-3,3,3-TRIFLUOROPROPENE - The present invention provides processes for the production of HCFO-1233zd, 1-chloro-3,3,3-trifluoropropene, from the starting material, 2-chloro-3,3,3-trifluoropropene (HCFO-1233xf). In a first process, HCFO-1233zd is produced by the isomerization of HCFO-1233xf. In a second process, HCFO-1233zd is produced in a two-step procedure which includes (i) dehydrochlorination of HCFO-1233xf into trifluoropropyne; and (ii) hydrochlorination of the trifluoropropyne into HCFO-1233zd. | 11-21-2013 |
| 20140171698 | PROCESS FOR THE MANUFACTURE OF HYDROCHLOROFLUOROOLEFINS - The invention also relates a process for the manufacture of trans 1-chloro 3,3,3-trifluoropropene. The process comprises an isomerization step from cis 1233zd to trans 1233zd. | 06-19-2014 |
| 20140206910 | CONTINUOUS LOW-TEMPERATURE PROCESS TO PRODUCE TRANS-1-CHLORO-3,3,3-TRIFLUOROPROPENE - 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 including one or more reactors 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. | 07-24-2014 |
| 20140275644 | METHOD TO PRODUCE CIS-1-CHLORO-3,3,3-TRIFLUOROPROPENE - The present invention discloses methods to produce cis-1-chloro-3,3,3-trifluoropropene in high yield by the isomerization of trans-1-chloro-3,3,3-trifluoropropene. These isomers are also known as 1233zd(Z) and 1233zd(E), respectively. This is done by using reactive distillation whereby as cis-1-chloro-3,3,3-trifluoropropene is produced, it is removed from the reaction zone. This product removal causes a shift in the thermodynamic equilibrium of the reaction system, forcing the production of additional cis isomer. | 09-18-2014 |
| 20140288336 | HIGH TEMPERATURE ISOMERIZATION OF (E)-1-CHLORO-3,3,3-TRIFLUOROPROPENE TO (Z)-1-CHLORO-3,3,3-TRIFLUOROPROPENE - Disclosed are processes for a high temperature isomerization reaction converting (E)-1-chloro-3,3,3-trifluoropropene to (Z)-1-chloro-3,3,3-trifluoropropene. In certain aspects of the invention, such a process includes contacting a feed stream with a heated surface, where the feed stream includes (E)-1-chloro-3,3,3-trifluoropropene or mixture of (E)-1-chloro-3,3,3-trifluoropropene with (Z)-1-chloro-3,3,3-trifluoropropene. The resulting product stream includes (Z)-1-chloro-3,3,3-trifluoropropene and (E)-1-chloro-3,3,3-trifluoropropene, where the ratio of (Z) isomer to (E) isomer in the product stream is higher than the ratio feed stream. The (E) and (Z) isomers in the product stream may be separated from one another. | 09-25-2014 |
| 20140336424 | Method for Producing Trans-1-Chloro-3,3,3-Trifluoropropene - Provided is a method for producing trans-1-chloro-3,3,3-trifluoropropene usable as a raw material for a foaming agent for a hard polyurethane foam, a solvent, a cleaning agent, a cooling medium, a working fluid, a propellant, a fluorinated resin, etc., the method involving a step of bringing cis-1-chloro-3,3,3-trifluoropropene into contact with a catalyst, wherein the catalyst includes a fluorinated metal oxide or a metal fluoride each produced by applying a fluorination treatment to a metal oxide containing one kind or two or more kinds of metals and containing aluminum atoms that make up 50 at. % or more of metal atoms to thereby substitute some or all of oxygen atoms in the metal oxide with fluorine atom(s), wherein the fluorinated metal oxide or the metal fluoride is a compound produced through a drying treatment at 400 to 600° C. | 11-13-2014 |
| 20150099907 | METHOD FOR PRODUCING 1-CHLORO-3,3,3-TRIFLUORO-1-PROPENE AND 1,3,3,3-TETRAFLUOROPROPENE - A method for producing a desired isomer of 1-chloro-3,3,3-trifluoro-1-propene or a desired isomer of 1,3,3,3-tetrafluoropropene at a high conversion ratio with no use of a solid catalyst is provided. Since no solid catalyst is used, a desired isomer of 1-chloro-3,3,3-trifluoro-1-propene and a desired isomer of 1,3,3,3-tetrafluoropropene can be stably obtained with no undesired possibility that the solid catalyst is deteriorated due to coking or the like caused as a result of long-time use thereof. | 04-09-2015 |
| 20150112103 | METHOD FOR PRODUCING CIS-1,3,3,3-TETRAFLUOROPROPENE - A method for producing 1234Z from 1234E while generation of 245fa as a byproduct is suppressed. The method for producing cis-1,3,3,3-tetrafluoropropene includes putting trans-1,3,3,3-tetrafluoropropene into contact with a catalyst. The trans-1,3,3,3-tetrafluoropropene is put into contact with the catalyst at a reaction temperature of higher than or equal to 200° C. and lower than or equal to 550° C. for a contact time of longer than or equal to 0.01 seconds and shorter than or equal to 500 seconds. | 04-23-2015 |
| 20150321979 | HFO-1234ZE AND HFC-245FA CO-PRODUCTION PREPARATION PROCESS - Disclosed is an HFO-1234ze and HFC-245fa co-production preparation method. The HFO-1234ze and HFC-245fa are prepared through a two-stage gas phase fluorination reaction by using 1,1,1,3,3-pentachloropropane (HCC-240fa) as a raw material. With the processing method of the present invention, HFO-1234ze and HFC-245fa can be prepared at the same time, and the alkene is unlikely to polymerize or carbonize during the reaction, thus being suitable for industrialized promotion. | 11-12-2015 |
| 20160016868 | METHOD OF OBTAINING A COMBINATION OF Z AND E STEREOISOMERS OF HYDROFLUOROOLEFINS - Disclosed are the combinations containing Z and E stereoisomers of hydrofluoroolefins where the more toxic isomer is less than about | 01-21-2016 |
| 20160023972 | One-Step Process for Hexafluoro-2-Butene - Disclosed is a one step process for making of 1,1,1,4,4,4-hexafluoro-2-butene. More specifically, the present invention provides a process for making hexafluoro-2-butene, continuously, from 2-chloro-3,3,3-trifluoropronene using Fe | 01-28-2016 |
| 20160185692 | HIGH TEMPERATURE ISOMERIZATION OF (E)-1-CHLORO-3,3,3-TRIFLUOROPROPENE TO (Z)-1-CHLORO-3,3,3-TRIFLUOROPROPENE - Disclosed are processes for a high temperature isomerization reaction converting (E)-1-chloro-3,3,3-trifluoropropene to (Z)-1-chloro-3,3,3-trifluoropropene. In certain aspects of the invention, such a process includes contacting a feed stream with a heated surface, where the feed stream includes (E)-1-chloro-3,3,3-trifluoropropene or mixture of (E)-1-chloro-3,3,3-trifluoropropene with (Z)-1-chloro-3,3,3-trifluoropropene. The resulting product stream includes (Z)-1-chloro-3,3,3-trifluoropropene and (E)-1-chloro-3,3,3-trifluoropropene, where the ratio of (Z) isomer to (E) isomer in the product stream is higher than the ratio feed stream. The (E) and (Z) isomers in the product stream may be separated from one another. | 06-30-2016 |
