Patent application number | Description | Published |
20110105809 | PROCESS FOR THE PURIFICATION OF 2,3,3,3-TETRAFLUORO-1-PROPENE (HFO-1234YF) - The subject of the invention is a process for the purification of 2,3,3,3-tetrafluoro-1-propene (HFO-1234yf). More particularly, it relates to a purification process in which 2,3,3,3-tetrafluoro-1-propene, comprising impurities based on halogen compounds, is brought into contact with an adsorbent, preferably molecular sieves and advantageously molecular sieves having a pore opening with an average diameter between 5 and 11 Å, preferably between 5 and 9 Å. | 05-05-2011 |
20110155942 | Catalytic Gas Phase Fluorination of 1230xa to 1234yf - The invention is directed to a process for preparing 2,2,2,3-tetrafluoropropene (1234yf), comprising:
| 06-30-2011 |
20110160497 | Catalytic Gas Phase Fluorination of 1233xf to 1234yf - The present invention provides a process for preparing 1234yf, comprising:
| 06-30-2011 |
20110160498 | PROCESS FOR THE PREPARATION OF TRIFLUORINATED AND TETRAFLUORINATED COMPOUNDS - The subject of the invention is a process for the preparation of 2,3-dichloro-1,1,1-trifluoropropane by chlorination of 3,3,3-trifluoropropene at a pressure greater than 2 bar. Application in the synthesis of 1234yf. | 06-30-2011 |
20110160499 | Catalytic Gas Phase Fluorination of 243db to 1234yf - The invention provides a process for preparing 1234yf, comprising:
| 06-30-2011 |
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 |
20110313215 | Catalytic Gas Phase Fluorination of 243db to 1234yf - The invention provides a process for preparing 1234yf, comprising: (i) contacting 243db with hydrogen fluoride HF in gas phase in the presence of a fluorination catalyst under conditions sufficient to produce a reaction mixture; (ii) separating the reaction mixture into a first stream comprising HCl, 1234yf and a second stream comprising HF, 1233xf and 245cb; (iii) recycling at least a part of the second stream at least in part back to step (i). The invention also provides a process for preparing 1234yf, comprising: (i) contacting 243db with hydrogen fluoride HF in gas phase in the presence of a fluorination catalyst under conditions sufficient to produce a reaction mixture; (ii) separating the reaction mixture into HCl and a stream containing the fluorinated products; (iii) separating said stream containing the fluorinated products into a first stream comprising 1234yf and a second stream comprising HF, 1233xf and 245cb; (iv) recycling at least a part of the second stream at least in part back to step (i). | 12-22-2011 |
20110319675 | Catalytic Gas Phase Fluorination of 1233xf to 1234yf - The present invention provides a process for preparing 1234yf, comprising: (i) contacting 1233xf with hydrogen fluoride HF in gas phase in the presence of a fluorination catalyst under conditions sufficient to produce a reaction mixture; (ii) separating the reaction mixture into a first stream comprising HCl, 1234yf and a second stream comprising HF, unreacted 1233xf and 245cb; (iii) recycling at least a part of the second stream at least in part back to step (i). The present invention also provides a process for preparing 1234yf, comprising: (i) contacting 1233xf with hydrogen fluoride HF in gas phase in the presence of a fluorination catalyst under conditions sufficient to produce a reaction mixture; (ii) separating the reaction mixture into HCl and a stream containing the fluorinated products; (iii) separating said stream containing the fluorinated products into a first stream comprising 1234yf and a second stream comprising HF, unreacted 1233xf and 245cb; (iv) recycling at least a part of the second stream at least in part back to step (i). | 12-29-2011 |
20120172637 | CATALYTIC GAS PHASE FLUORINATION OF 1230xa to 1234yf - The invention is directed to a process for preparing 2,2,2,3-tetrafluoropropene (1234yf), comprising:
| 07-05-2012 |
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 |
20130245341 | PROCESS FOR THE MANUFACTURE OF 2-CHLORO-1,1,1,2-TETRAFLUOROPROPANE BY LIQUID PHASE FLUORINATION OF 2-CHLORO-3,3,3-TRIFLUOROPROPANE - Process of catalytic fluorination in liquid phase of product 2-chloro-3, 3, 3-trifluoropropene into product 2-chloro-1, 1, 1, 2-tetrafluoropropane, with an ionic liquid based catalyst. Process for manufacturing 2, 3, 3, 3-tetrafluoropropene. | 09-19-2013 |
20130267740 | PROCESS FOR THE PREPARATION OF 2,3,3,3 TETRAFLUOROPROPENE - The present invention provides a process for preparing 2,3,3,3-tetrafluoropropene, comprising the following steps: (a) catalytic reaction of 1,1,1,2,3-pentachloropropane and/or 1,1,2,2,3-pentachloropropane with HF into product 2-chloro-3,3,3-trifluoropropene; (b) catalytic reaction of the thus-obtained 2-chloro-3,3,3-trifluoropropene into 2,3,3,3-tetrafluoropropene. | 10-10-2013 |
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 |
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 |
20140155659 | PROCESS FOR THE MANUFACTURE OF 2-CHLORO-3,3,3-TRIFLUOROPROPENE (HCFO 1233xf) BY LIQUID PHASE FLUORINATION OF PENTACHLOROPROPANE - Process of catalytic fluorination in liquid 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. | 06-05-2014 |
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 |
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 |