| Patent application number | Description | Published |
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| 20100187088 | SEPARATION OF CLOSE BOILING COMPOUNDS BY ADDITION OF A THIRD COMPOUND - 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 (HCFC-1233xf) by adding a third component and then separating via conventional distillation. More particularly the invention pertains to a method for separating HCFC-244bb from HCFC-1233xf which are useful as intermediates in the production of 2,3,3,3-tetrafluoropropene (HFO-1234yf). | 07-29-2010 |
| 20100331583 | METHOD FOR PROLONGING A CATALYST'S LIFE DURING HYDROFLUORINATION - The invention provides an improved process to manufacture 2-chloro-1,1,1,2-tetrafluoropropane (HCFC-244bb) by reacting 2-chloro-3,3,3,-trifluoropropene (HCFO-1233xf) with hydrogen fluoride, in the presence of a fluorination catalyst, where by using 2-chloro-3,3,3,-trifluoropropene (HCFO-1233xf) of high purity, the need to add an oxidizing agent (typically chlorine) to keep the catalyst active can be avoided. The HCFC-244bb is then used as an intermediate in the production of 2,3,3,3-tetrafluoropropene-1 (HFO-1234yf). | 12-30-2010 |
| 20110004035 | METHOD FOR PRODUCING 2-CHLORO-3,3,3,-TRIFLUOROPROPENE (HCFC-1233xf) - The present invention relates to an improved method for manufacturing | 01-06-2011 |
| 20110015453 | PROCESS FOR PRODUCING FLUOROPROPENES - Dehydrohalogenation processes for the preparation of fluoropropenes from corresponding halopropanes, in which the fluoropropenes have the formula CF | 01-20-2011 |
| 20110224465 | Catalyst Life Improvement for the Vapor Phase Manufacture of 1-Chloro-3,3,3-Trifluoropropene - This invention achieves a catalyst life improvement for the catalyzed vapor phase reaction of 1,1,1,3,3-pentachloropropane with hydrogen fluoride to form 1-chloro-3,3,3-trifluoropropene by introducing an oxygen co-feed into the fluorination reactor. By introduction of an oxygen co-feed to the reactor feed, the catalyst life was extended a minimum of two-fold (2×). | 09-15-2011 |
| 20110240902 | AZEOTROPE-LIKE COMPOSITION OF 2,3-DICHLORO-3,3-DIFLUOROPROPENE (HCFO-1232xf) AND HYDROGEN FLUORIDE (HF) - Provided are azeotropic and azeotrope-like compositions of 2,3-dichloro-3,3-difluoropropene (HCFO-1232xf) 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) | 10-06-2011 |
| 20110245548 | CATALYST LIFE IMPROVEMENT IN THE VAPOR PHASE FLUORINATION OF CHLOROCARBONS - The present invention achieves a catalyst life improvement for the catalyzed vapor phase fluorination of a chlorocarbon in the presence of one catalyst and an oxygen feed. Specifically, in one non-limiting embodiment, the instant invention provides the conversion of 1,1,2,3-tetrachloropropene and/or 1,1,1,2,3-pentachloropropane to 2-chloro-3,3,3-trifluoropropene by introduction of a catalyst and oxygen co-feed to the fluorination reactor. | 10-06-2011 |
| 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 |
| 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 |
| 20110295045 | Azeotrope-Like Composition of Hexafluoropropane, Hexafluoropropene and Hydrogen Fluoride - The present invention relates to an azeotropic or azeotrope-like mixture consisting essentially of 1,1,1,2,3,3-hexafluoropropane, hexafluoropropene and hydrogen fluoride. | 12-01-2011 |
| 20120037843 | AZEOTROPE-LIKE COMPOSITION OF 2-CHLORO-1,1,1,2-TETRAFLUOROPROPANE (HCFC-244bb) AND HYDROGEN FLUORIDE (HF) - Provided are azeotropic and azeotrope-like compositions of 2-chloro-1,1,1,2-tetrafluoropropane (HCFC-244bb) 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). | 02-16-2012 |
| 20120056122 | 1,3,3,3-TETRAFLUOROPROPENE PROCESS AZEOTROPES WITH HF - The present invention pertains to azeotropic and azeotrope-like compositions of the following three blends:
| 03-08-2012 |
| 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 |
| 20120059200 | 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 chlorinated hydrocarbon feed stock, 240fa. The process includes a combined liquid or vapor phase reaction/purification operation which directly produces (E)1-chloro-3,3,3-trifluoropropene (1233zd(E)) from 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-tetrafluoropropene (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. | 03-08-2012 |
| 20120059201 | METHODS TO PRODUCE 3,3,3-TRIFLUOROPROPENE - Disclosed is a process for the preparation of 3,3,3-trifluoropropene comprising the steps of; (1) fluorination of 240fa to form 245fa; (2) conversion of 245fa to a cis/trans mixture of 1234ze; (3) hydrogenation of the cis/trans mixture of 1234ze to form 254fb; and (4) dehydrofluorination of 254fb to produce 3,3,3-trifluoropropene. Alternatively or additionally, a second process for the preparation of the desired compound comprises the following steps; (1) fluorination of HCC-240fa to form HCFC-244fa; (2) conversion of 244fa to a cis/trans mixture of HFO-1234ze; (3) hydrogenation of the cis/trans mixture of 1234ze to form HFC-254fb; and (4) dehydrofluorination of 254fb to produce 3,3,3-trifluoropropene. | 03-08-2012 |
| Patent application number | Description | Published |
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| 20090137382 | Fine porosity low-microcracked ceramic honeycombs and methods thereof - Disclosed are high-porosity cordierite honeycomb substrates having fine pore size, narrow pore size distribution, little or no microcracking, and a high thermal shock resistance. The porous ceramic honeycomb substrates generally include a primary cordierite ceramic phase as defined herein. Also disclosed are methods for making and using the cordierite substrates. | 05-28-2009 |
| 20090220736 | Stabilized Low-Microcracked Ceramic Honeycombs And Methods Thereof - Disclosed are high-porosity cordierite honeycomb substrates having a narrow pore size distribution, little or no microcracking, and high thermal shock resistance. The porous ceramic honeycomb substrates generally comprise a primary cordierite ceramic phase as defined herein. Also disclosed are methods for making and using the cordierite substrates. | 09-03-2009 |
| 20100126132 | High-Strength Low-Microcracked Ceramic Honeycombs And Methods Therefor - A low-microcracked porous cordierite honeycomb ceramic particulate filter having a high strength in combination with a very low pressure drop, a very high filtration efficiency, and a high thermal shock resistance. Little or no microcracking, a fine median pore diameter, and a narrow pore size distribution contribute to high strength. A thin channel wall, high wall permeability, and narrow pore size distribution, contribute to low pressure drop. A fine pore diameter and narrow pore size distribution with a minimum of coarse pores contribute to high filtration efficiency. A high strain tolerance, MOR/E, contributes to high thermal shock resistance. Particulate filters disclosed herein can be useful as a hot gas particulate filter, and particularly as an internal combustion engine exhaust gas particulate filter, such as an exhaust gas filter for a gasoline direct injection engine. | 05-27-2010 |
| 20100156010 | FINE POROSITY LOW-MICROCRACKED CERAMIC HONEYCOMBS AND METHODS THEREOF - Disclosed are high-porosity cordierite honeycomb substrates having fine pore size, narrow pore size distribution, little or no microcracking, and a high thermal shock resistance. The porous ceramic honeycomb substrates generally include a primary cordierite ceramic phase as defined herein. Also disclosed are methods for making and using the cordierite substrates. | 06-24-2010 |
| 20100237007 | Cordierite Aluminum Magnesium Titanate Compositions And Ceramic Articles Comprising Same - Disclosed are ceramic bodies comprised of composite cordierite aluminum magnesium titanate ceramic compositions and methods for the manufacture of the same. | 09-23-2010 |
| 20100304082 | Lanthanum-Containing Cordierite Body And Method Of Manufacture - Lanthanum containing cordierite bodies are provided that exhibit high strength, little or no microcracking, and a high thermal shock resistance. Improved maintenance of low microcracking and high strength is obtained even after exposure to high temperatures. | 12-02-2010 |
| 20110130277 | Beta-Spodumene-Cordierite Composition, Article, and Method - Porous spodumene-cordierite honeycomb bodies of high strength but low volumetric density, useful for the manufacture of close-coupled engine exhaust converters, gasoline engine particulate exhaust filters, and NOx integrated engine exhaust filters, are provided through the reactive sintering of batches comprising sources of magnesia, alumina and silica together with a lithia source, such as a spodumene or petalite ore. | 06-02-2011 |
