Patent application number | Description | Published |
20090240090 | INTEGRATED PROCESS TO PRODUCE 2,3,3,3-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: | 09-24-2009 |
20100036178 | PROCESS FOR MAKING CHLOROTRIFLUOROETHYLENE FROM 1,1,2-TRICHLOROTRIFLUOROETHANE - A process for the making chlorotrifluoroethylene. The process has the step of reacting 1,1,2-trichlorotrifluoroethane with a reducing metal in the presence of a polar aprotic solvent under conditions sufficient to form chlorotrifluoroethylene. | 02-11-2010 |
20100222616 | Process for Making Chlorotrifluoroethylene from 1,1,2-Trichlorotrifluoroethane - Disclosed is a process for the making chlorotrifluoroethylene. The process comprises the step of reacting 1,1,2-trichlorotrifluoroethane with a reducing metal in the presence of a polar aprotic solvent under conditions sufficient to form chlorotrifluoroethylene. | 09-02-2010 |
20100324345 | SYSTEMS AND PROCESSES FOR CFO-1113 FORMATION FROM HCFC-123a - Systems and processes relating to the formation and production of CFO-1113 HCFC-123 | 12-23-2010 |
20110207975 | INTEGRATED PROCESS TO PRODUCE 2,3,3,3-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: | 08-25-2011 |
20110270000 | METHOD FOR PRODUCING TETRAFLUOROPROPENES - The current invention relates to a process for making a tetrafluoropropene using a tetrafluorochloropropane and/or a pentafluoropropane as starting or intermediate reagents. More specifically, though not exclusively, the present invention relates to a novel method for preparing a tetrafluoropropene by dehydrohalogenating a starting or intermediate tetrafluorochloropropane and/or pentafluoropropane material in the presence of a caustic solution at a temperature range greater than 40° C. and less than or equal to 80° C. | 11-03-2011 |
20120022302 | INTEGRATED PROCESS FOR THE MANUFACTURE OF FLUORINATED OLEFINS - The instant invention relates, at least in part, to a method increasing the cost efficiency for dehydrohalogenation production of a fluorinated olefin by recovering and recycling spent dehydrohalogenation agent. In one aspect, the present invention relates to dehydrohalogenating a fluorinated alkane (e.g. pentafluoropropane and/or hexafluoropropane) in the presence of a dehydrohalogenating agent to produce a fluorinated olefin (e.g. tetrafluoropropenes and/or pentafluoropropenes). Removal of spent dehydrohalogenating agent from the reactor allows for facile separation of organic and dehydrohalogenating agent, the latter of which is recycled. | 01-26-2012 |
20120178977 | Low Temperature Production of 2-Chloro-3,3,3-Trifluoropropene - Disclosed is a method for the production of 1233xf comprising the continuous low temperature liquid phase reaction of 1,1,1,2,3-pentachloropropane and anhydrous HF, without the use of a catalyst, wherein the reaction takes place in one or more reaction vessels, each one in succession converting a portion of the original reactants fed to the lead reaction vessel and wherein the reactions are run in a continuous fashion. | 07-12-2012 |
20140147343 | Low Temperature Production of 2-Chloro-3,3,3-Trifluoropropene - Disclosed is a method for the production of 1233xf comprising the continuous low temperature liquid phase reaction of 1,1,1,2,3-pentachloropropane and anhydrous HF, without the use of a catalyst, wherein the reaction takes place in one or more reaction vessels, each one in succession converting a portion of the original reactants fed to the lead reaction vessel and wherein the reactions are run in a continuous fashion. | 05-29-2014 |
20140215970 | METHODS OF HANDLING CHLORINATED COMPOUNDS USED FOR MANUFACTURING HFO-1234yf - This invention provides methods for handling, storing and/or transporting reactive chlorinated compounds such as 1230xa whereby decomposition reactions are reduced or eliminated by employing one or more anti-decomposition techniques selected from the group consisting of: (a) providing a 1230xa supply with little or no moisture, HCl, and/or metallic ions, (b) providing a storage and/or transport tank preferably lined and/or coated with one or more suitable materials, (c) transferring 1230xa, preferably stabilized 1230xa, into a storage and/or transportation tank in such a way that no exposure of the 1230xa to air occurs, (d) handling, storing, and/or transporting 1230xa under the protection of a dried inert gas such as nitrogen, (e) optionally providing a device that can remove any HCl generated during the storage and/or transportation of 1230xa; and (f) combinations of two or more of these anti-decomposition techniques. | 08-07-2014 |
20140235904 | PROCESS FOR PRODUCING 2,3,3,3-TETRAFLUOROPROPENE - The present invention relates, in part, to the discovery that high temperatures during the fluorination of 1,1,2,3-tetrachloropropene (HCO-1230xa) to 2-chloro-3,3,3-trifluoropropene (HCFO-1233xf) results in catalyst instability, reduced selectivity of the conversion, and/or the formation of one or more undesirable by-products. By controlling the reaction temperature, it is shown that the catalyst life may be extended and the selectivity of the reaction improved. Such control similarly results in an overall improvement in the production of certain hydrofluoroolefins, particularly 2,3,3,3-tetrafluoropropene (HFO-1234yf). | 08-21-2014 |
20140256995 | PROCESS FOR PRODUCING 2,3,3,3-TETRAFLUOROPROPENE - The present invention relates, in part, to the discovery that the presence of moisture in 1,1,2,3-tetrachloropropene (HCO-1230xa) results in catalyst deactivation and accelerated corrosion in the reactor during the fluorination of HCO-1230xa to 2-chloro-3,3,3-trifluoropropene. By substantially removing the moisture, it is shown that the catalyst life is extended and results in improved operation efficiency of the fluorination reaction. Such steps similarly result in an overall improvement in the production of certain hydrofluoroolefins, particularly 2,3,3,3-tetrafluoropropene (HFO-1234yf). | 09-11-2014 |
20140256996 | PROCESS FOR PRODUCING 2,3,3,3-TETRAFLUOROPROPENE - The present invention relates, in part, to the discovery that, during the fluorination of certain fluoroolefm starting reagents, oligomerization/polymerization of such reagents reduces the conversion process and leads to increased catalyst deactivation. The present invention also illustrates that vaporizing such starting reagents in the presence of one or more organic co-feed reduces such oligomerization/polymerization and improves catalytic stability. | 09-11-2014 |
20140275651 | PROCESS FOR PRODUCING 2,3,3,3-TETRAFLUOROPROPENE - The invention relates to a process to prepare 2-chloro-3,3,3-trifluoropropene (HCO-1233xf) or 2-chloro-1,1,12-tetrafluoropropane (HCFC-244bb) using dichloro-trifluoropropanes and/or trichloro-difluoropropanes, and to prepare 2-chloro-3,3,3-trifluoropropene (HCO-1233xf) using various 242 and 243 isomers. | 09-18-2014 |
20140275652 | INTEGRATED PROCESS TO PRODUCE 2,3,3,3-TETRAFLUOROPROPENE - The invention relates to a separation process whereby 2-chloro-3,3,3-trifluoropropene (1233xf) is separated from a mixture containing other fluorinated organics and high boiling materials such as dimers using azeotropes of HF formed by adding appropriate amounts to the mixture which facilitate separation by, e.g. distillation. | 09-18-2014 |
20140275660 | METHOD FOR MITIGATING HCL GENERATION DURING 1,1,2,3-TETRACHLOROPROPENE PURIFICATION - This invention is directed to a method for mitigating HCl generation during 1230xa purification, which comprises the steps of; (a) adding a chelating agent into 1230xa crude, and (b) conducting the 1230xa purification in the presence of said chelating agent at a quantity sufficient to reduce or prevent 1230xa decomposition. Examples of chelating agent include tributyl phosphate (TBP), tripropyl phosphate (TPP), and triethyl phosphate (TEP). The concentration of chelating agent in 1230xa crude can range from 0.001 to 20 wt %, preferably from 0.01 to 10 wt %, and more preferably from 0.1 to 5 wt %. | 09-18-2014 |
20140309463 | PROCESS FOR PRODUCING 2,3,3,3-TETRAFLUOROPROPENE - The present invention relates, in part, to the discovery that, during the fluorination of certain fluoroolefin starting re-agents, particularly, 1,1,2,3-tetrachloropropene (1230xa), oligomerization/polymerization of such starting reagents reduces the conversion process and leads to increased catalyst deactivation. The present invention also illustrates that providing one or more organic co-feed to the fluooelefin starting stream reduces such oligomerization/polymerization and improves catalystic stability. | 10-16-2014 |
20140316170 | PROCESS FOR PRODUCING 2,3,3,3-TETRAFLUOROPROPENE - The present invention relates, in part, to the discovery that the presence of impurities in 1,1,2,3-tetrachloropropene (1230xa) results in catalyst instability during the fluorination of 1230xa to 2-chloro-3,3,3-trifluoropropene. By substantially removing the impurities, it is shown that the catalyst life is extended and results in improved operation efficiency of the fluorination reaction. Such steps similarly result in an overall improvement in the production of certain hydrofluoroolefins, particularly 2,3,3,3-tetrafluoropropene (1234yf). | 10-23-2014 |
20150057472 | REACTION SYSTEM AND PROCESS TO PRODUCE FLUORINATED ORGANICS - The invention relates to the use of a liquid-vapor separator such as a de-entrainer to remove an unvaporized portion of a feed, e.g. 1,1,2,3-tetrachloropropene (1230xa), to a catalytic vapor phase fluorination reaction where e.g. 2-chloro-3,3,3,-trifluoropropene (1233xf) is produced. The invention extends the life of the catalyst. | 02-26-2015 |