Class / Patent application number | Description | Number of patent applications / Date published |
570160000 | Substituting fluorine for a different halogen | 58 |
20090099396 | PROCESS FOR SYNTHESIS OF FLUORINATED OLEFINS - 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:
| 04-16-2009 |
20090105510 | Fluorination catalysts, method for their preparation, and method for producing fluorinated compounds using the catalysts - A method for the preparation of a novel fluorinated compound, particularly 1,1,1,3,3-pentafluoropropane (HFC-245fa), by using a fluorination catalyst obtained by treating a metal salt containing a chromium salt such as chromium oxide with chlorine gas and/or oxygen gas. Examples of the metal salt may include, besides a chromium salt, one or more catalytically active metal salts selected from magnesium salts, aluminum salts, zinc salts, sodium salts, nickel salts, iron salts, cobalt salts, vanadium salts, manganese salts and copper salts. | 04-23-2009 |
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 |
20100048961 | METHOD FOR SEPARATING HALOCARBONS - The invention provides a method for separating halocarbons. In particular, a method for separating 2-chloro-1,1,1,2-tetrafluoropropane (HCFC-244bb) from 2-chloro-3,3,3-trifluoropropene (HCFO-1233xf) based on differences in melting points of these compounds. More particularly the invention pertains to a method for separating HCFC-244bb from HCFO-1233xf which are useful as intermediates in the production of 2,3,3,3-tetrafluoropropene (HFO-1234yf). | 02-25-2010 |
20100160696 | METHOD OF HYDRODECHLORINATION TO PRODUCE DIHYDROFLUORINATED OLEFINS - Disclosed is a process for the preparation of fluorine-containing olefins comprising contacting a chlorofluoroalkene with hydrogen in the presence of a catalyst at a temperature sufficient to cause replacement of the chlorine substituents of the chlorofluoroalkene with hydrogen to produce a fluorine-containing olefin, wherein said catalyst is a composition comprising chromium, nickel and optionally an alkali metal selected from potassium and cesium. Also disclosed are catalyst compositions for the hydrodechlorination of chlorofluoroalkenes comprising copper, nickel, and an alkali metal selected from potassium and cesium, and methods of making such catalysts. | 06-24-2010 |
20100185030 | PROCESS FOR THE MANUFACTURE OF HYDROFLUOROOLEFINS - In this invention we are disclosing a process for the synthesis of hydrochlorofluoro olefins (HCFO) and/or hydrofluoroolefins (HFO). The process is based on the following steps of liquid phase, noncatalytic fluorination of hydrochloropropenes to form hydrochlorofluoropropenes and/or hydrofluoropropenes, followed by gas phase, catalytic fluorination of the hydrochlorofluoropropenes to form hydrofluoropropenes. | 07-22-2010 |
20100204529 | PROCESS FOR PRODUCING 2,3,3,3-TETRAFLUOROPROPENE - The present invention provides a simple and efficient process for producing 2,3,3,3-tetrafluoropropene(HFC-1234yf), the process being useful for industrial production. More specifically, the present invention relates to:
| 08-12-2010 |
20110130599 | CATALYTIC GAS PHASE FLUORINATION OF 1230XA TO 1234YF - A one reactor, gas phase catalyzed process for the fluorination of 1,1,2,3-tetrachloropropene (1230xa) to produce 1,1,1,2-tetrafluoropropene (1234yf) is disclosed. The process of the present invention is a catalytic, gas phase fluorination using a high pressure activated catalyst which is supported or unsupported. Fluorination products of the formula CF3R, where R is selected from —CCl=CH2, —CF=CH2, —CF2—CH3, —CFCl—CH3 and mixtures thereof are produced. Co-produced materials are separated from the desired product and recycled to the same reactor. | 06-02-2011 |
20110172472 | Process for Producing 1,3,3,3-Tetrafluoropropene - According to the first characteristic of the present invention, there is provided a production process for 1,3,3,3-tetrafluoropropene including: the first step of reacting 1,1,1,3,3-pentachloropropane with hydrogen fluoride thereby obtaining 1-chloro-3,3,3-trifluoropropene; and the second step of reacting 1-chloro-3,3,3-trifluoropropene obtained in the first step with hydrogen fluoride in a gaseous phase in the presence of a fluorination catalyst. According to the second characteristic of the present invention, there is provided a dehydration process including bringing 1,3,3,3-tetrafluoropropene containing at least water into contact with zeolite. | 07-14-2011 |
20110178344 | PROCESS FOR PREPARING 2,3,3,3-TETRAFLUOROPROPENE - The present invention provides a process for producing 2,3,3,3-tetrafluoropropene represented by the formula CF | 07-21-2011 |
20110196178 | STABILIZATION OF CHLOROPROPENES - Compositions including chlorinated propenes and a phenolic antioxidant are described herein. | 08-11-2011 |
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 |
20110319681 | PROCESS FOR PRODUCING 2,3,3,3-TETRAFLUOROPROPENE - The object is to provide a process for producing highly pure 2,3,3,3-tetrafluoropropene, whereby formation of 3,3,3-trifluoropropene as a by-product is suppressed. | 12-29-2011 |
20120041239 | PROCESS FOR PREPARATION OF 2,3,3,3-TETRAFLUOROPROPENE - The present invention provides an effective, selective, and industrially applicable process for producing 2,3,3,3-tetrafluoropropene. Specifically, the present invention provides a process for producing 2,3,3,3-tetrafluoropropene including reacting 2-chloro-3,3,3-trifluoropropene with hydrogen fluoride in the presence of oxygen and a catalyst comprising chromium oxide represented by the composition formula: CrOm (1.502-16-2012 | |
20120059202 | PROCESS FOR THE MANUFACTURE OF HYDROFLUOROOLEFINS - In this invention we are disclosing a process for the synthesis of hydrocchlorofluoro olefins (HCFO) and/or hydrofluoroolefins (HFO). The process is based on the gas phase, noncatalytic fluorination of hydrochlorofluoropropenes to form hydrofluoropropenes. | 03-08-2012 |
20120065434 | PROCESS FOR PREPARING CHLORINE-CONTAINING FLUOROCARBON COMPOUND - The present invention provides a process for preparing at least one chlorine-containing fluorocarbon compound selected from the group consisting of chlorine-containing fluoropropane compounds represented by Formula (1): CF | 03-15-2012 |
20120078020 | PROCESS FOR THE MANUFACTURE OF HYDROFLUOROOLEFINS - In this invention we are disclosing a process for the synthesis of hydrocchlorofluoro olefins (HCFO) and/or hydrofluoroolefins (HFO). The process is based on the steps of fluorination of hydrochloropropenes or hydrochloropropanes to form hydrochlorofluoropropenes and/or hydrofluoropropenes, followed by gas phase, catalytic fluorination of the hydrochlorofluoropropenes to form hydrofluoropropenes. | 03-29-2012 |
20120123172 | Production Method Of Trans-1,3,3,3-Tetrafluoropropene - Production of trans-1,3,3,3-tetrafluoropropene by reacting 1-chloro-3,3,3-trifluoropropene with hydrogen fluoride to obtain a reaction product A containing formed trans-1,3,3,3-tetrafluoropropene, unreacted 1-chloro-3,3,3-trifloropropene and hydrogen fluoride, and by-product cis-1,3,3,3-tetrafluoropropene, 1,1,1,3,3-pentafluoropropane and hydrogen chloride; distilling reaction product A to recover a distillation bottom product containing 1-chloro-3,3,3-trifloropropene and hydrogen fluoride and supplying recovered distillation bottom product to the reacting step; recovering hydrogen fluoride from a residue B remaining after recovery of the distillation bottom product and supplying recovered hydrogen fluoride to the reacting step; contacting a residue C remaining after recovery of hydrogen fluoride with water or aqueous sodium hydroxide solution to separate hydrogen chloride; dehydrating a residue D remaining after separation of hydrogen chloride; and distilling a residue E remaining after the dehydration to obtain trans-1,3,3,3-tetrafluoropropene. The method reuses unreacted reactants and produces the target compound efficiently. | 05-17-2012 |
20120190902 | Stabilization of Chloropropenes - Compositions including chlorinated propenes and a phenolic antioxidant are described herein. | 07-26-2012 |
20120215039 | Azeotrope And Azeotrope-Like Compositions Useful For The Production Of Haloolefins - The present invention pertains to ternary azeotrope and azeotrope-like composition including 2-chloro-3,3,3-trifluoropropene (HCFO-1233xf), HF, and either 1,1,2,3-tetrachloropropene (TCP) or 1,1,1,2,2-pentafluoropropane (HFC-245cb). The present invention also relates to binary azeotropes of 2,3,3,3-tetrachloropropene and HF. Such azeotropic and azeotrope-like compositions are useful as intermediates in the production of 2,3,3,3-tetrafluoropropene (HFO-1234yf). | 08-23-2012 |
20120296128 | METHOD FOR SEPARATING HALOCARBONS - The invention provides a method for separating halocarbons. In particular, a method for separating 2-chloro-1,1,1,2-tetrafluoropropane (HCFC-244bb) from 2-chloro-3,3,3-trifluoropropene (HCFO-1233xf) based on differences in melting points of these compounds. More particularly the invention pertains to a method for separating HCFC-244bb from HCFO-1233xf which are useful as intermediates in the production of 2,3,3,3-tetrafluoropropene (HFO-1234yf). | 11-22-2012 |
20130041191 | PROCESS OF FLUORINATION IN LIQUID PHASE - The present invention provides a process of fluorination in liquid phase in a solvent medium of a compound of formula (II) CX | 02-14-2013 |
20130197282 | METHOD FOR PRODUCING 2-CHLORO-3,3,3,-TRIFLUOROPROPENE (HCFC-1233xf) - 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. | 08-01-2013 |
20130267741 | PROCESS FOR THE MANUFACTURE OF 2-CHLORO-3,3,3-TRIFLUOROPROPENE BY GAS PHASE FLUORINATION OF PENTACHLOROPROPANE - The present invention provides a process of catalytic fluorination in gas phase of product 1,1,1,2,3- pentachloropropane or/and 1,1,2,2,3-pentachloropropane into product 2-chloro-3,3,3-trifluoropropene in presence of a catalyst and oxygen. | 10-10-2013 |
20140012051 | CATALYTIC GAS PHASE FLUORINATION - The invention relates to a fluorination process, alternately comprising reaction stages and regeneration stages, wherein the reaction stages comprise reacting a chlorinated compound with hydrogen fluoride in gas phase in the presence of a fluorination catalyst to produce a fluorinated compound, and the regeneration stages comprise contacting the fluorination catalyst with an oxidizing agent-containing gas flow. | 01-09-2014 |
20140012052 | AZEOTROPE-LIKE COMPOSITION OF 2-CHLORO-3,3,3-TRIFLUOROPROPENE (HCFC-1233XF) AND HYDROGEN FLUORIDE (HF) - Provided are azeotropic and azeotrope-like compositions of 2-chloro-3,3,3-trifluoropropene (HCFO-1233xf) and hydrogen fluoride (HF). Such azeotropic and azeotrope-like compositions are useful as intermediates in the production of 2,3,3,3-tetrafluoropropene (HFO-1234yf). | 01-09-2014 |
20140031597 | PROCESS FOR THE MANUFACTURE OF 2,3,3,3-TETRAFLUOROPROPENE BY GAS PHASE FLUORINATION OF PENTACHLOROPROPANE - The present invention provides a process of catalytic fluorination in gas phase of product 1,1,1,2,3-pentachloropropane or/and 1,1,2,2,3-pentachloropropane into product 2,3,3,3-tetrafluoropropene in presence of a catalyst. | 01-30-2014 |
20140039228 | CATALYTIC GAS PHASE FLUORINATION - The present invention relates to a fluorination process, comprising:
| 02-06-2014 |
20140121424 | PROCESS FOR PREPARING 2,3,3,3-TETRAFLUOROPROPENE - The present invention provides a method for efficiently preparing 2,3,3,3-tetrafluoropropene (HFO-1234yf) by a simple and economically advantageous method that is suitable for implementation on an industrial scale. The present invention provides a process for preparing 2,3,3,3-tetrafluoropropene, comprising the step of: (1) in a reactor, (1-1) reacting 1,1,1,2,3-pentachloropropane with hydrogen fluoride in an amount of 10 to 100 mol per mole of the 1,1,1,2,3-pentachloropropane 1; (1-2) in the presence of chromic oxide represented by composition formula: CrOm (1.505-01-2014 | |
20140163265 | PROCESS FOR THE PRODUCTION OF CHLORINATED PROPENES - Processes for the production of chlorinated propenes are provided. The present processes make use of a feedstock comprising 1,2,3-trichloropropane and chlorinates the 1,1,2,3-tetrachloropropane generated by the process prior to a dehydrochlorination step. Production of the less desirable pentachloropropane isomer, 1,1,2,3,3-pentachloropropane, is thus minimized. The present processes provide better reaction yield as compared to conventional processes that require dehydrochlorination of 1,1,2,3-tetrachloropropane prior to chlorinating the same. The present process can also generate anhydrous HCl as a byproduct that can be removed from the process and used as a feedstock for other processes, while limiting the production of waste water, thus providing further time and cost savings. | 06-12-2014 |
20140163266 | PROCESS FOR THE PRODUCTION OF CHLORINATED PROPENES - Processes for the production of chlorinated propenes are provided. The present processes make use of a feedstock comprising 1,2,3-trichloropropane and chlorinates the 1,1,2,3-tetrachloropropane generated by the process prior to a dehydrochlorination step. Production of the less desirable pentachloropropane isomer, 1,1,2,3,3-pentachloropropane, is thus minimized. The present processes provide better reaction yield as compared to conventional processes that require dehydrochlorination of 1,1,2,3-tetrachloropropane prior to chlorinating the same. The present process can also generate anhydrous HCl as a byproduct that can be removed from the process and used as a feedstock for other processes, while limiting the production of waste water, thus providing further time and cost savings. | 06-12-2014 |
20140179962 | PROCESS FOR THE PRODUCTION OF CHLORINATED PROPENES - Processes for the production of chlorinated propenes are provided wherein a dehydrochlorination reaction occurs prior to a first chlorination reaction. The present processes make use of at least one reactor twice, i.e., at least two reactions occur in the same reactor. Cost and time savings are thus provided. Additional savings can be achieved by conducting more than two chlorination reactions, or all chlorination reactions, in one chlorination reactor, and/or by conducting more than two dehydrochlorination reactions, or all dehydrochlorination reactions, within a single dehydrochlorination reactor. | 06-26-2014 |
20140213831 | STABILIZATION OF CHLOROPROPENES - Compositions including chlorinated propenes and a phenolic antioxidant are described herein. | 07-31-2014 |
20140221704 | PROCESS FOR THE PREPARATION OF 1-CHLORO-3,3,3-TRIFLUOROPROPENE USING A PHASE TRANSFER CATALYST - Disclosed is a process in which the fluorination of an organic reactant comprising 1,1,1,3,3-pentachloropropane (240fa) with anhydrous HF is conducted in the presence of an effective amount of a phase-transfer catalyst which facilitates the reaction between these incompatible reaction components to produce 1-chloro-3,3,3-trifluoro-propene (1233zd). Other organic reactant materials include 1,1,3,3-tetrachloropropene (HCO-1230za), 1,3,3,3-tetrachloropropene (HCO-1230zd), and various mixtures with or without 240fa. | 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 |
20140275650 | STABILIZER AND INHIBITOR FOR CHLOROPROPENES, SUCH AS TETRACHLOROPROPENE 1,1,2,3-TETRACHLOROPROPENE (1230xa), USED IN THE MANUFACTURE OF 2,3,3,3-TETRAFLUOROPROPENE (1234yf) - The present invention relates in part to a method of stabilizing chloropropenes, such as 1,1,2,3-tetrachloropropene, otherwise known to decompose and degrade, and to the resulting stabilized chloropropene, using a morpholine compound and/or a trialkyl phosphate compound as defined herein. Such stabilized chloropropenes are useful in the manufacture of hydrofluoroolefins such as 2,3,3,3-tetrafluoroprop-1-ene (1234yf). | 09-18-2014 |
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 |
20140275653 | Method for Manufacturing 2,3,3,3-Tetrafluoropropene - The present invention relates to a method for manufacturing 2,3,3,3-tetrafluoropropene from halopropanes having the formula CX | 09-18-2014 |
20140303412 | PROCESS FOR PRODUCING FLUORINE-CONTAINING OLEFIN - This invention provides a process for producing a fluoroolefin comprising reacting, in a vapor phase, a fluorinating agent and a chlorine-containing alkene or a chlorine-containing alkane in the presence of at least one catalyst selected from the group consisting of chromium oxide containing a Group 5 element and fluorinated chromium oxide containing a Group 5 element. According to the process of the present invention, the target fluoroolefin can be obtained with high starting material conversion and good selectivity. | 10-09-2014 |
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 |
20140316171 | PROCESS FOR THE MANUFACTURE OF HYDROFLUOROOLEFINS - The invention relates to a process for manufacturing 1,1,1,2-tetrafluoropropene (1234yf, CF | 10-23-2014 |
20140350312 | METHOD FOR PREPARING 2,3,3,3-TETRAFLUOROPROPENE - Provided are a fluorination catalyst for preparing 2,3,3,3-tetrafluoropropene and a method using the catalyst for preparing 2,3,3,3-tetrafluoropropene. The catalyst has the following structural formula: Crx(Y,Z) | 11-27-2014 |
20150057473 | PROCESS FOR PREPARING 2-CHLORO-3,3,3-TRIFLUOROPROPENE - Provided is a process for preparing 2-chloro-3,3,3-trifluoropropene, wherein at least one chlorine-containing compound selected from the group consisting of chloropropane represented by formula (1): CX | 02-26-2015 |
20150080619 | Method for Producing 2,3,3,3-Tetrafluoropropene - The invention concerns a method for producing 2,3,3,3-tetrafluoropropene comprising: a fluoridation reaction of a halopropane and/or halopropene into 2,3,3,3-tetrafluoropropene by means of hydrogen fluoride; the recovery of a gas stream resulting from the reaction; the cooling and partial condensation of the gas stream resulting from the reaction into a partially condensed stream; the separation of the partially condensed stream into a gas fraction and a liquid fraction; the compression of the gas fraction into a compressed gas fraction; the compression of the liquid fraction into a compressed liquid fraction; the distillation of the compressed gas fraction and compressed liquid fraction in order to provide a stream of 2,3,3,3-tetrafluoropropene, a stream of hydrochloric acid, and a stream of unreacted hydrogen fluoride. The invention also concerns an installation suitable for implementing said method. | 03-19-2015 |
20150105596 | PROCESS FOR PRODUCING 1-CHLORO-3,3,3-TRIFLUOROPROPENE IN AN IONIC LIQUID - This invention relates to methods and systems for producing hydrochlorofluoro-olefins, particularly 1-chloro-3,3,3-trifluoropropene (HCFO-1233zd) by the fluorination of a starting material selected from the group consisting of 1,1,1,3,3-pentachloropropane (HCC-240fa), 1,1,3,3-tetrachloropropene, and 1,1,1,3-tetrachloropropene, alone or in combination, in an ionic liquid. | 04-16-2015 |
20150148571 | PROCESS FOR PRODUCING FLUORINE-CONTAINING OLEFIN - The present invention provides a process for producing a fluoroolefin by reacting, in a gas phase, a fluorinating agent and a chlorine-containing alkene or a chlorine-containing alkane in the presence of at least one catalyst selected from the group consisting of chromium oxide, at least part of which is crystallized, and fluorinated chromium oxide obtained by fluorinating the chromium oxide. According to the present process, a target fluoroolefin can be obtained at a high conversion rate of the starting material and with high selectivity. | 05-28-2015 |
20150315108 | METHOD FOR PRODUCING FLUORINATED ORGANIC COMPOUNDS - Disclosed are processes for the production of fluorinated olefins, preferably adapted to commercialization of CF | 11-05-2015 |
20150344386 | PROCESS FOR THE PRODUCTION OF CHLORINATED PROPENES - Processes for the production of chlorinated propenes are provided. The processes make use of 1,2-dichloropropane as a starting material and subject a feedstream comprising the same to an ionic chlorination process. At least a portion of any tri- and tetrachlorinated propanes not amenable to ionic chlorination conditions are removed from the ionic chlorination product stream, or, are subjected to chemical base dehydrochlorination step. In this way, recycle of intermediates not amenable to ionic chlorination reactions is reduced or avoided, as is the buildup of these intermediates within the process. Selectivity and, in some embodiments, yield of the process is thus enhanced. | 12-03-2015 |
20160052841 | METHOD FOR PRODUCING FLUORINE-CONTAINING OLEFIN - The present invention provides a method for producing a fluorine-containing olefin, the method comprising reacting a chlorine-containing compound represented by a specific formula with anhydrous hydrogen fluoride in the presence of a chromium atom-containing fluorination catalyst, the reaction being carried out at a temperature within the range of | 02-25-2016 |
20160115104 | E-1-CHLORO-3,3,3-TRIFLUOROPROPENE PRODUCTION PROCESS FROM 1,1,3,3-TETRACHLOROPROPENE - A production process for the production of E-1-chloro-3,3,3-trifluoropropene, the process including at least one stage during which 1,3,3,3-tetrachloropropene reacts with anhydrous hydrofluoric acid in the liquid phase, in the absence of a catalyst, with an HF/1,1,3,3-tetrachloropropene molar ratio between 3 and 20 inclusive, at a temperature between 50° C. and 150° C. inclusive and an absolute pressure of between 1 and 20 bar inclusive. | 04-28-2016 |
20160145175 | PROCESS FOR THE MANUFACTURE OF 2,3,3,3-TETRAFLUOROPROPENE BY GAS PHASE FLUORINATION OF PENTACHLOROPROPANE - The present invention provides a process of catalytic fluorination in gas phase of product 1,1,1,2,3-pentachloropropane or/and 1,1,2,2,3-pentachloropropane into product 2,3,3,3-tetrafluoropropene in presence of a catalyst. | 05-26-2016 |
20160152534 | METHOD FOR PRODUCING 2,3,3,3-TETRAFLUOROPROPENE | 06-02-2016 |
20160176789 | CATALYTIC GAS PHASE FLUORINATION | 06-23-2016 |
20160251282 | METHOD FOR PRODUCING FLUORINATED COMPOUNDS | 09-01-2016 |
20170233315 | METHOD FOR PRODUCING 2,3,3,3-TETRAFLUOROPROPENE | 08-17-2017 |