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Rajiv R. Singh Patents |
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Inventor: Singh; Rajiv R.
Address: Getzville, NY
No. of patents: 44
Patents:
| Patent Number |
Title Of Patent |
Date Issued |
| 7413674 |
Azeotrope-like trifluoroiodomethane compositions |
August 19, 2008 |
| Provided are azeotrope-like compositions comprising difluoroethane and trifluoroiodomethane, azeotrope-like compositions comprising difluoroethane, tetrafluoropropene and trifluoroiodomethane, and uses thereof, including use in refrigerant compositions, refrigeration systems, blowing |
| 7396485 |
Azeotrope-like compositions of difluoromethane |
July 8, 2008 |
| The invention relates to azeotropic and azeotrope-like mixtures of HFC-32, HCl, and Cl.sub.2, and processes for separating the azeotrope-like mixtures of HFC-32 and HCL and HFC-32, HCL and Cl.sub.2. |
| 7384618 |
Purification of nitrogen trifluoride |
June 10, 2008 |
| A process and system for adsorption purification of NF.sub.3 wherein a crude product containing NF.sub.3 and impurities such as CF.sub.4 is brought into contact with a polyacrylonitrile-based carbon molecular sieve so that at least a portion of one or more impurities are adsorbed by |
| 7361795 |
Azeotrope-like compositions of 1,1,1,3,3-pentafluorobutane and hydrogen fluoride |
April 22, 2008 |
| The invention relates to azeotropic and azeotrope-like mixtures of 1,1,1,3,3-pentafluorobutane (HFC-365) and hydrogen fluoride and a process for separating the azeotrope-like mixtures. The compositions of the invention are useful as an intermediate in the production of HFC-365. The l |
| 7341984 |
Azeotrope-like compositions of tetrafluoropropene and trifluoroiodomethane |
March 11, 2008 |
| Provided are azeotrope-like compositions comprising tetrafluoropropene and trifluoroiodomethane and uses thereof, including use in refrigerant compositions, refrigeration systems, blowing agent compositions, and aerosol propellants. |
| 7312367 |
Method of making 1,1,3,3,3-pentafluoropropene |
December 25, 2007 |
| The invention provides an economic process for the manufacture of the hydrofluorocarbon 1,1,3,3,3-pentafluoropropene (HFC-1225zc). HFC-1225zc can be made from the dehydrochlorination of 1-chloro-1,1,3,3,3-pentafluoropropane (HCFC-235fa). Alternatively, HFC-1225zc can also be made fro |
| 7279451 |
Compositions containing fluorine substituted olefins |
October 9, 2007 |
| The use to e of tetrafluoropropenes, particularly (HFO-1234) in a variety of applications, including refrigeration equipment, is disclosed. These materials are generally useful as refrigerants for heating and cooling, as blowing agents, as aerosol propellants, as solvent composition, and |
| 7276471 |
Azeotrope-like compositions of pentafluoropropane, methanol and dichloroethylene |
October 2, 2007 |
| Provided are azeotrope-like compositions comprising pentafluoropropane, methanol, and dichloroethylene, and uses thereof, including use in aerosols, refrigerant compositions, refrigeration systems, and blowing agent compositions. |
| 7273835 |
Azeotrope-like compositions of difluoromethane |
September 25, 2007 |
| The invention relates to azeotropic and azeotrope-like mixtures of HFC-32 and HCl or a mixture of HCl and Cl.sub.2, and a process for separating the azeotrope-like mixtures. |
| 7270717 |
Compositions and methods for cleaning contaminated articles |
September 18, 2007 |
| Disclosed are compositions and methods for cleaning contaminated articles based on the provision of a zeotropic composition comprising (a) at least one flammable solvent having a boiling point at a first pressure; (b) at least one first nonflammable solvent having a boiling point at said |
| 7265082 |
Azeotrope-like compositions of 1,1,1,3,3-pentachloropropane and carbon tetrachloride |
September 4, 2007 |
| The invention relates to azeotropic and azeotrope-like mixtures of 1,1,1,3,3-pentachloropropane (HCC-240fa) and carbon tetrachloride and a process for separating the azeotrope-like mixtures. The compositions of the invention are useful as an intermediate in the production of HFC-245f |
| 7230146 |
Process for producing fluoropropenes |
June 12, 2007 |
| Dehydrohalogenation processes for the preparation of fluoropropenes from corresponding halopropanes, in which the fluoropropenes have the formula CF.sub.3CY.dbd.CX.sub.NH.sub.P, wherein X and Y are independently hydrogen or a halogen selected from fluorine, chlorine, bromine and iodi |
| 7169320 |
Pentafluoropropane-based compositions |
January 30, 2007 |
| The present invention provides compositions comprising pentafluoropropane, a second component selected from the group consisting of decafluoropropane, perfluorobutyl methyl ether and combinations of these, and a third component selected from the group consisting of methanol, 1,2-tran |
| 7141094 |
Azeotrope-like compositions of iodine heptafluoride and hydrogen fluoride |
November 28, 2006 |
| Provided are azeotrope-like compositions comprising iodine heptafluoride and hydrogen fluoride and uses thereof, including methods for separating iodine heptafluoride or hydrogen fluoride from a mixture comprising iodine heptafluoride and hydrogen fluoride by removing an azeotrope-like |
| 7127935 |
Wireless gas composition sensor system |
October 31, 2006 |
| A sensor system for detecting the presence of at least one specific component in a fluid medium such as an exhaust gas. A sensor is mounted in a sensor body for detecting the presence of at least one specific component and providing a representative signal that is transmitted to a re |
| 7098176 |
Azeotrope-like compositions of tetrafluoropropene and pentafluoropropene |
August 29, 2006 |
| Provided are azeotrope-like compositions comprising tetrafluoropropene and pentafluoropropene and uses thereof, including use in refrigerant compositions, refrigeration systems, blowing agent compositions, and aerosol propellants. |
| 7091388 |
Method of making 1,1,3,3,3-pentafluoropropene |
August 15, 2006 |
| The invention provides an economic process for the manufacture of the hydrofluorocarbon 1,1,3,3,3-pentafluoropropene (HFC-1225zc). HFC-1225zc can be made from the dehydrochlorination of 1-chloro-1,1,3,3,3-pentafluoropropane (HCFC-235fa). Alternatively, HFC-1225zc can also be made fro |
| 7074751 |
Azeotrope-like compositions of tetrafluoropropene and trifluoroiodomethane |
July 11, 2006 |
| Provided are azeotrope-like compositions comprising tetrafluoropropene and trifluoroiodomethane and uses thereof, including use in refrigerant compositions, refrigeration systems, blowing agent compositions, and aerosol propellants. |
| 6969701 |
Azeotrope-like compositions of tetrafluoropropene and trifluoroiodomethane |
November 29, 2005 |
| Provided are azeotrope-like compositions comprising tetrafluoropropene and trifluoroiodomethane and uses thereof, including use in refrigerant compositions, refrigeration systems, blowing agent compositions, and aerosol propellants. |
| 6955769 |
Compositions of pentafluoropropane |
October 18, 2005 |
| Provided are compositions comprising HFC-245fa and trans-1,2-dichloroethylene which exhibit relatively high solubility with conventional hydrocarbon lubricants, non-flammability, and relatively constant boiling points. Also provided are uses of such compositions. |
| 6896823 |
Pentafluoropropane-based compositions |
May 24, 2005 |
| The present invention provides compositions comprising pentafluoropropane, a second component selected from the group consisting of decafluoropropane, perfluorobutyl methyl ether and combinations of these, and a third component selected from the group consisting of methanol, 1,2-tran |
| 6858571 |
Pentafluoropropene-based compositions |
February 22, 2005 |
| Provided are azeotrope-like compositions comprising pentafluoropropene (HFO-1225) and a fluid selected from the group consisting of 3,3,3-trifluoropropene ("HFO-1243zf"), 1,1-difluoroethane ("HFC-152a"), trans-1,3,3,3-tetrafluoropropene ("HFO-1234ze"), and combinations of two or more |
| 6806247 |
Azeotrope-like compositions of tetrafluoroethane, pentafluoropropane, methylbutane and water |
October 19, 2004 |
| This invention provides azeotrope-like compositions of 1,1,1,2-tetrafluoroethane, 1,1,1,3,3-pentafluoropropane-245fa and water that are environmentally desirable for use as refrigerants, aerosol propellants, metered dose inhalers, blowing agents for polymer foam, heat transfer media, |
| 6790820 |
Compositions of hydrofluorocarbons and trans-1,2-dichloroethylene |
September 14, 2004 |
| The present invention provides compositions comprising an HFC component and a non-HFC component consisting essentially of methanol, having boiling points that are unexpectedly low and relatively constant, and uses thereof. |
| 6784150 |
Composition of pentafluoropropane, pentafluoropropane and water |
August 31, 2004 |
| Disclosed are compositions comprising 1,1,1,3,3-pentafluoropropane, 1,1,1,3,3-pentafluorobutane and water, said compositions are environmentally desirable for use as blowing agents for polymer foam, refrigerants, aerosol propellants, metered dose inhalers, heat transfer media, and ga |
| 6777382 |
Compositions of hydrofluorocarbons and methanol |
August 17, 2004 |
| The present invention provides compositions comprising an HFC component and a non-HFC component consisting essentially of methanol, having boiling points that are unexpectedly low and relatively constant, and uses thereof. |
| 6764990 |
Azeotrope-like compositions of pentafluoropropane, chloropropane and dichloroethylene |
July 20, 2004 |
| This invention provides azeotrope-like compositions of 1,1,1,3,3-pentafluoropropane, 2-chloropropane and dichloroethylene that are environmentally desirable for use as refrigerants, aerosol propellants, metered dose inhalers, blowing agents for polymer foam, heat transfer media, and |
| 6686326 |
Azeotrope-like compositions or pentafluorobutane |
February 3, 2004 |
| Disclosed are azeotrope-like compositions comprising 1,1,1,3,3-pentafluorobutane, water and a hydrocarbon selected from the group consisting of n-pentane, isopentane, cyclopentane, n-hexane, and isohexane., said compositions are environmentally desirable for use as refrigerants, aero |
| 6673264 |
Azeotrope-like compositions of 1,1,1,3,3-pentafluorobutane and hydrogen fluoride |
January 6, 2004 |
| The invention relates to azeotropic and azeotrope-like mixtures of 1,1,1,3,3-pentafluorobutane (HFC-365) and hydrogen fluoride and a process for separating the azeotrope-like mixtures. The compositions of the invention are useful as an intermediate in the production of HFC-365. The l |
| 6673259 |
Azeotrope-like compositions of pentafluoropropane |
January 6, 2004 |
| Disclosed are azeotrope-like compositions comprising 1,1,1,3,3-pentafluoropropane and at least one C.sub.3 or C.sub.4 hydrocarbon, and optionally water, said compositions are environmentally desirable for use as refrigerants, aerosol propellants, metered dose inhalers, blowing agents |
| 6670281 |
HF etching and oxide scale removal |
December 30, 2003 |
| Methods for etching or removing oxide scale from a substrate by applying a composition containing a polymer and an effective amount of hydrofluoric acid and maintaining the composition on the substrate until the substrate is etched or the oxide scale is removed. |
| 6640841 |
Method of introducing refrigerants into refrigeration systems |
November 4, 2003 |
| Provided are methods of charging refrigerants into refrigeration systems. The present methods involve recharging a refrigerant system that contains a chlorine-containing refrigerant and a lubricant comprising the steps of (a) providing a refrigeration system comprising a chamber having a |
| 6638987 |
Azeotrope-like compositions of tetrafluoroethane, pentafluoropropane and water |
October 28, 2003 |
| This invention provides azeotrope-like compositions of 1,1,1,2-tetrafluoroethane, 1,1,1,3,3-pentafluoropropane-245fa and water that are environmentally desirable for use as refrigerants, aerosol propellants, metered dose inhalers, blowing agents for polymer foam, heat transfer media, |
| 6635686 |
Azeotrope-like compositions of tetrafluoroethane, pentafluoropropane and methylbutane |
October 21, 2003 |
| This invention provides azeotrope-like compositions of 1,1,1,2-tetrafluoroethane, 1,1,1,3,3-pentafluoropropane-245fa and 2-methylbutane that are environmentally desirable for use as refrigerants, aerosol propellants, metered dose inhalers, blowing agents for polymer foam, heat transf |
| 6557359 |
Process for heating or cooling using mixtures of pentafluoropropane and a hydrofluorocarbon havi |
May 6, 2003 |
| The invention discloses novel azeotrope-like mixtures of fluorinated compounds which are useful for heating and cooling as heat transfer agents and/or refrigerants. The azeotrope-like mixture comprises: (a) pentafluoropropane; and (b) a hydrofluorocarbon of the formula: C.sub.x F.sub |
| 6423757 |
Process for producing polymer foam using mixtures of pentafluoropropane and a hydrofluorocarbon |
July 23, 2002 |
| The invention discloses novel azeotrope-like mixtures of fluorinated compounds which are useful for heating and cooling as heat transfer agents and/or refrigerants. The azeotrope-like mixture comprises: (a) pentafluoropropane; and (b) a hydrofluorocarbon of the formula: C.sub.x F.sub |
| 6156944 |
Extraction of hydrogen fluoride from a halocarbon/hydrogen fluoride azeotropic mixture |
December 5, 2000 |
| A process for the separation of mixtures containing halocarbons and hydrogen fluoride. Either water alone or a blend comprising water and hydrogen fluoride is added to a mixture comprising a halocarbon and hydrogen fluoride to thereby form a first phase rich in the halocarbon and a s |
| 6132636 |
Leak-detecting refrigerant compositions containing oxazolyl-coumarin dyes |
October 17, 2000 |
| Refrigerant compositions containing oxazolyl-coumarin dyes for leak detection under ultraviolet light, and methods for the use of such dyes in leak detection. |
| 6099694 |
Azeotrope-like compositions of difluoromethane and chlorine |
August 8, 2000 |
| The invention relates to an improvement in a process in which chlorine and difluoromethane are present in a distillation column, for example, a fluorination reaction. By controlling the chlorine feed such that the concentration of chlorine relative to difluoromethane in the distillation |
| 6079482 |
Clathrate forming medium and its use in thermal energy storage systems and processes for thermal |
June 27, 2000 |
| An improved thermal energy storage system and a process for thermal energy storage and transfer are disclosed. The cooling medium, a clathrate forming mixture, comprises water, and a hydrofluorocarbon having at least three carbon atoms and a molecular diameter less than about 7 .ANG.. |
| 5800729 |
Mixtures of pentafluoropropane and a hydrofluorocarbon having 3 to 6 carbon atoms |
September 1, 1998 |
| The invention discloses novel azeotrope-like mixtures of fluorinated compounds which are useful for heating and cooling as heat transfer agents and/or refrigerants. The azeotrope-like mixture comprises: (a) pentafluoropropane; and (b) a hydrofluorocarbon of the formula: C.sub.x F.sub |
| 5778685 |
Clathrate forming medium and its use in thermal energy storage systems and processes for thermal |
July 14, 1998 |
| An improved thermal energy storage system and a process for thermal energy storage and transfer are disclosed. The cooling medium, a clathrate forming mixture, comprises water, and a hydrofluorocarbon having at least three carbon atoms and a molecular diameter less than about 7 .ANG.. |
| 5340490 |
Azeotrope-like compositions of trifluoromethane and carbon dioxide or hexafluoroethane and carbo |
August 23, 1994 |
| Azeotrope-like compositions comprising trifluoromethane and carbon dioxide or trifluromethane, hexafluoroethane and carbon dioxide are stable and have utility as refrigerants for heating and cooling as well as fire extinguishing compositions. |
| 5294359 |
Refrigerant compositions |
March 15, 1994 |
| Compositions comprising difluoromethane, 1,1,1,2-tetrafluoroethane and a member selected from the group consisting of 1,1-difluoroethane, 1,1,1-trifluoroethane, propane and dimethyl ether having a vapor pressure from about 12.2 psia to about 18.4 psia at -40.degree. F., are useful as |
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