| Entries |
| Document | Title | Date |
|---|
| 20090030247 | METHOD FOR PRODUCING FLUORINATED ORGANIC COMPOUNDS - Disclosed are processes for the production of fluorinated olefins, preferably adapted to commercialization of CF | 01-29-2009 |
| 20110288347 | PROCESS FOR THE MANUFACTURE OF FLUORINATED OLEFINS - A method for producing 1,1,1,2-tetrafluoropropene and/or 1,1,1,2,3-pentafluoropropene using a single set of four unit operations, the unit operations being (1) hydrogenation of a starting material comprising hexafluoropropene and optionally recycled 1,1,1,2,3-pentafluoropropene; (2) separation of the desired intermediate hydrofluoroalkane, such as 1,1,1,2,3,3-hexafluoropropane and/or 1,1,1,2,3-pentafluoropropane; (3) dehydrofluorination of the intermediate hydrofluoroalkane to produce the desired 1,1,1,2-tetrafluoropropene and/or 1,1,1,2,3-pentafluoropropene, followed by another separation to isolate the desired product and, optionally, recycle of the 1,1,1,2,3-pentafluoropropene. | 11-24-2011 |
| 20120190901 | PROCESS FOR SEPARATING HYDROGEN FLUORIDE FROM ORGANIC FEEDSTOCKS - Provided is a process for purifying an organic feedstock comprising (a) distilling a raw organic feedstock comprising hydrogen fluoride, 2-chloro-1,1,1,2-tetrafluoropropane, and 2-chloro-3,3,3-trifluoropropene to produce a first distillate stream comprising an azeotrope-like composition of 2-chloro-1,1,1,2-tetrafluoropropane, 2-chloro-3,3,3-trifluoropropene, and hydrogen fluoride, and a first bottoms stream rich in hydrogen fluoride; (b) cooling said first distillate stream to produce an intermediate composition comprising an organic layer rich in 2-chloro-1,1,1,2-tetrafluoropropane and 2-chloro-3,3,3-trifluoropropene, and an acid layer rich in hydrogen fluoride; and, optionally but preferably, (c) distilling said organic layer to produce a second distillate stream comprising an azeotrope-like composition of 2-chloro-1,1,1,2-tetrafluoropropane, 2-chloro-3,3,3-trifluoropropene, and hydrogen fluoride, and a second bottoms stream comprising a purified organic feedstock substantially free of hydrogen fluoride. | 07-26-2012 |
| 20110269999 | PROCESS FOR DEHYDROHALOGENATION OF HALOGENATED ALKANES - A process for the manufacture of halogenated olefins in semi-batch mode by dehydrohalogenation of halogenated alkanes in the presence of an aqueous base such as KOH which simultaneously neutralizes the resulting hydrogen halide. During the process, aqueous base is continuously added to the haloalkane which results in better yields, lower by-product formation and safer/more controllable operation. | 11-03-2011 |
| 20100280291 | Process for the synthesis of perfluorobutadiene - Process for preparing perfluoro-1,3-butadiene, comprising the following steps:
| 11-04-2010 |
| 20090264689 | Tetrafluoropropene Production Processes - A process is disclosed for producing 2,3,3,3-tetrafluoropropene and 1,3,3,3-tetrafluoropropene. The process involves pyrolyzing 1,1,1,2,3-pentafluoropropane. | 10-22-2009 |
| 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 |
| 20100210883 | METHOD FOR PRODUCING FLUORINATED ORGANIC COMPOUNDS - Disclosed are methods for producing fluorinated organic compounds, including hydrofluoropropenes, which preferably comprises converting at least one compound of formula (I): | 08-19-2010 |
| 20100197981 | PROCESSES FOR PRODUCING 1,2,3,3,3-PENTAFLUOROPROPENE AND PRECURSORS THEREOF - A process is disclosed for making CH | 08-05-2010 |
| 20100191025 | PROCESS FOR PREPARING (HYDRO)(CHLORO)OLEFINS - The present invention relates to a process for preparing (hydro)(chloro)fluoroolefins comprising at least one step of fluorination in the liquid phase of a (hydro)haloalkane or of a (hydro)haloalkene in the presence of at least one ionic liquid as a catalyst. The ionic liquids are derivatives of Lewis acids based on aluminum, titanium, niobium, tantalum, tin, antimony, nickel, zinc or iron. | 07-29-2010 |
| 20110190554 | PROCESS FOR THE PREPARATION OF FLUORINATED COMPOUNDS - A subject-matter of the invention is a process for the preparation of 2,3,3,3-tetrafluoro-1-propene which comprises 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; and (iv) dehydrofluorination of the 1,1,1,2,3-pentafluoropropane obtained in the preceding stage to give 2,3,3,3-tetrafluoro-1-propene. Stages (ii) and (iv) are carried out using a water and potassium hydroxide mixture with the potassium hydroxide representing between 58 and 86% by weight of the mixture and at a temperature of between 110 and 180° C. | 08-04-2011 |
| 20110201852 | PROCESS FOR THE PREPARATION OF FLUOROOLEFIN COMPOUNDS - A subject-matter of the invention is a process for the preparation of fluoroolefin compounds. It relates more particularly to a process for the manufacture of a compound of formula (I) CF | 08-18-2011 |
| 20110118514 | Process for the Preparation of 1,1,1,3,3,3-Hexafluoro-Propane and at Least One Of 1,1,1,2,3,3-Hexafluoropropane, Hexafluoropropane and 1,1,1,2,3,3,3-Heptafluoropropane - A process is disclosed for the manufacture of 1,1,1,3,3,3-hexafluoropropane and 1,1,1,2,3,3-hexafluoropropane, hexafluoropropene and/or 1,1,1,2,3,3,3-heptafluoropropane. The process involves (a) reacting HF, Cl | 05-19-2011 |
| 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 |
| 20120232316 | CONVERSION OF 2-CHLORO-1,1,1,2-TETRAFLUOROPROPANE TO 2,3,3,3-TETRAFLUOROPROPENE - Described is a method for producing fluoropropenes of formula CF | 09-13-2012 |
| 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 |
| 20120022303 | PROCESS FOR PREPARING 2-CHLORO-3,3,3-TRIFLUOROPROPENE - The present invention provides a process for preparing 2-chloro-3,3,3-trifluoropropene including subjecting, in the absence of a catalyst, at least one chlorine-containing compound selected from the group consisting of chloropropane represented by formula (1): CClX | 01-26-2012 |
| 20120022301 | Process For The Preparation of Fluoroolefin Compounds - The subject of the invention is a process for the preparation of fluoroolefin compounds. It relates more particularly to a process for manufacturing a (hydro)fluoroolefin compound comprising (i) bringing at least one compound comprising from three to six carbon atoms, at least two fluorine atoms and at least one hydrogen atom, provided that at least one hydrogen atom and one fluorine atom are located on adjacent carbon atoms, into contact with potassium hydroxide in a stirred reactor, containing an aqueous reaction medium, equipped with at least one inlet for the reactants and with at least one outlet, in order to give the (hydro)fluoroolefin compound, which is separated from the reaction medium in gaseous form, and potassium fluoride, (ii) bringing the potassium fluoride formed in (i) into contact, in an aqueous medium, with calcium hydroxide in order to give potassium hydroxide and to precipitate calcium fluoride, (iii) separation of the calcium fluoride precipitated in step (ii) from the reaction medium and (iv) optionally, the reaction medium is recycled after optional adjustment of the potassium hydroxide concentration to step (i). | 01-26-2012 |
| 20120310019 | 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. | 12-06-2012 |
| 20120059199 | 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 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. | 03-08-2012 |
| 20110105807 | Integrated Process for Fluoro-Olefin Production - Disclosed is a process for the manufacture of HFO-1234yf from TCP in three integrated steps that include hydrofluorination of TCP (tetrachloropropene) to HCFC-1233xf in the vapor phase followed by hydrofluorination of HCFC-1233xf to HCFC-244bb in the liquid phase which is then followed by dehydrochlorination in liquid or vapor phase to produce HFO-1234yf. The vapor phase hydrofluorination is carried out at a higher pressure than the liquid phase hydrofluorination, thereby eliminating the need for compression and/or intermediate recovery. Also, any HCl generated from this reaction is fed to the liquid phase hydrofluorination section to promote agitation and mixing. This results in a more economical process from an initial capital and operating cost versus conducting the 3-steps sequentially. | 05-05-2011 |
| 20120130136 | METHOD FOR PREPARING VINYLIDENE FLUORIDE - 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. | 05-24-2012 |
| 20120083632 | PROCESS FOR PREPARING FLUOROOLEFIN COMPOUNDS - The subject matter of the invention is a process for preparing fluoroolefin compounds. The invention relates more particularly to a process for producing a (hydro)fluoroolefin compound, which comprises (i) bringing at least one compound comprising from three to six carbon atoms, at least two fluorine atoms and at least one hydrogen atom, on the condition that at least one hydrogen atom and one fluorine atom are located on adjacent carbon atoms, into contact with a solid reactant comprising calcium hydroxide. | 04-05-2012 |
| 20120232317 | CONVERSION OF 2-CHLORO-1,1,1,2-TETRAFLUOROPROPANE TO 2,3,3,3-TETRAFLUOROPROPENE - Described is a method for producing fluoropropenes of formula CF | 09-13-2012 |
| 20100168482 | PROCESSES FOR THE PRODUCTION OF FLUOROPROPANES AND HALOPROPENES - A process is disclosed for making CF | 07-01-2010 |
