Patents by Inventor Haridasan K. Nair
Haridasan K. Nair has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 8524955Abstract: Disclosed is a process for making hexafluoro-2-butyne comprising the steps of: (a) providing a composition comprising CF3CX?CXCF3, where X=halogen; and (b) treating CF3CX?CXCF3 with a dehalogenation catalyst in the presence of a halogen acceptor compound Y, where Y is not hydrogen. The halogen acceptor compound Y is a material capable of being halogenated, preferably a compound having a multiple bond, such as an alkyne, alkene, allene, or carbon monoxide. Another suitable material capable of being halogenated is a cyclopropane. A catalyst effectively transfers halogen from CF3CX?CXCF3 to the halogen acceptor compound. Since Y is not hydrogen, the formation of CF3CX?CHCF3 is greatly reduced or eliminated.Type: GrantFiled: May 19, 2011Date of Patent: September 3, 2013Assignee: Honeywell International Inc.Inventors: Andrew Joseph Poss, David Nalewajek, Haridasan K. Nair, Michael Van Der Puy, Rajiv Ratna Singh
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Patent number: 8404907Abstract: Disclosed is a process for making one isomer of CF3CH?CHCl. More particularly, the invention comprises the production of CF3C?CCl and its selective reduction to cis-1-chloro-3,3,3-trifluoropropene (CF3CH?CHCl).Type: GrantFiled: February 18, 2011Date of Patent: March 26, 2013Assignee: Honeywell International Inc.Inventors: Haridasan K. Nair, Andrew Joseph Poss, Rajiv Ratna Singh, Michael Van Der Puy, Ryan J. Hulse
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Patent number: 8395000Abstract: Disclosed are methods for producing fluorinated organic compounds, including hydrofluoropropenes, which preferably comprises converting at least one compound of formula (I): CF3CHXCH2X??(I) to at least one compound of formula (II) CF3CZCHZ??(II). where X is independently Cl, Br, I or F, and Z independently is H or F. In certain preferred embodiments, each Z is different.Type: GrantFiled: February 8, 2010Date of Patent: March 12, 2013Assignee: Honeywell International Inc.Inventors: Sudip Mukhopadhyay, Haridasan K. Nair, Hsueh S. Tung, Michael Van Der Puy, Daniel C. Merkel, Rajesh K. Dubey, Jing Ji Ma
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Patent number: 8383867Abstract: Disclosed is a method for producing fluorinated organic compounds, including hydrofluoropropenes, which preferably comprises converting at least one compound of formula (I): CF3CFnCHmXa-m??(I) to at least one compound of formula (II) CF3CZCHZ??(II). where each X is independently Cl, F, I or Br; each Z is independently H or F; n is 1 or 2; m is 1, 2 or 3, provided that when n is 1, m is 1 or 2; a is 2 or 3, and a-m?0. Certain embodiments include the step of reacting fluorinated C2 olefin, such as tetrafluoroethylene, with a Cl addition agent under conditions effective to produce a compound of formula (I).Type: GrantFiled: November 3, 2006Date of Patent: February 26, 2013Assignee: Honeywell International Inc.Inventors: Sudip Mukhopadhyay, Haridasan K. Nair, Rajesh K. Dubey, Rajiv R. Singh, George A. Shia
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Publication number: 20130004402Abstract: Embodiments of methods and apparatuses for purifying phosphorus pentafluoride are provided. The method comprises the step of contacting a feed stream comprising phosphorus pentafluoride and impurities with anhydrous hydrogen fluoride. The anhydrous hydrogen fluoride reduces the impurities from the feed stream to form an impurity-depleted phosphorus pentafluoride effluent.Type: ApplicationFiled: May 31, 2012Publication date: January 3, 2013Applicant: Honeywell International Inc.Inventors: Robert A. Smith, Daniel J. Brenner, Matthew H. Luly, Haridasan K. Nair, Bernard Pointner
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Publication number: 20120215041Abstract: Disclosed is a process for making one isomer of CF3CH?CHCl. More particularly, the invention comprises the production of CF3C?CCl and its selective reduction to cis-1-chloro-3,3,3-trifluoropropene (CF3CH?CHCl).Type: ApplicationFiled: February 18, 2011Publication date: August 23, 2012Inventors: Haridasan K. Nair, Andrew Joseph Poss, Rajiv Ratna Singh, Michael Van Der Puy, Ryan J. Hulse
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Publication number: 20120187330Abstract: Disclosed are compositions comprising at least one iodocarbon compound and preferably at least one stabilization agent. These compositions are generally useful as refrigerants for heating and cooling, as blowing agents, as aerosol propellants, as solvent composition, and as fire extinguishing and suppressing agents.Type: ApplicationFiled: March 13, 2012Publication date: July 26, 2012Applicant: HONEYWELL INTERNATIONAL INC.Inventors: RAJIV R. SINGH, HARIDASAN K. NAIR, RAYMOND H. THOMAS, LAWRENCE A. FORD, DAVID P. WILSON
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Publication number: 20110288350Abstract: Disclosed is a process for the preparation of fluorine-containing olefins comprising contacting a chlorofluoroalkane with hydrogen in the presence of a catalyst at a temperature sufficient to cause replacement of the chlorine substituents of the chlorofluoroalkane with hydrogen to produce a fluorine-containing olefin. Also disclosed are catalyst compositions for the hydrodechlorination of chlorofluoroalkanes comprising copper metal deposited on a support, and comprising palladium deposited on calcium fluoride, poisoned with lead and reducing the in the presence or absence of a dehydrochlorination catalyst under conditions effective to form a product stream comprising cis-1,1,1,4,4,4-hexafluoro-2-butene (HFO-1336).Type: ApplicationFiled: May 19, 2011Publication date: November 24, 2011Applicant: HONEYWELL INTERNATIONAL INC.Inventors: Andrew Joseph Poss, Michael Van Der Puy, Rajiv Ratna Singh, David Nalewajek, Haridasan K. Nair
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Publication number: 20110288346Abstract: Disclosed is a process for preparing cis-1,1,1,4,4,4-hexafluoropropene comprising the steps of (a) reacting CCl4 with a compound having the formula CF3CX?CXH, where each X is independently halogen or hydrogen, to form a compound having the formula CF3CXClCXHCCl3; (b) fluorinating the compound formed in step (a) to form a compound having the formula CF3CXHCXHCF3; (c) converting the compound formed in step (b) by a reaction selected from the group consisting of dehydrohalogenation, dehalogenation and both reactions, to form a compound having the formula CF3C?CCF3; and (d) catalytically reducing the compound formed in step (c) with hydrogen to form the compound having the formula:Type: ApplicationFiled: May 19, 2011Publication date: November 24, 2011Applicant: HONEYWELL INTERNATIONAL INC.Inventors: Andrew Joseph Poss, David Nalewajek, Haridasan K. Nair, Michael Van Der Puy
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Publication number: 20110288348Abstract: Disclosed is a process for making hexafluoro-2-butyne comprising the steps of: (a) providing a composition comprising CF3CX?CXCF3, where X=halogen; and (b) treating CF3CX?CXCF3 with a dehalogenation catalyst in the presence of a halogen acceptor compound Y, where Y is not hydrogen. The halogen acceptor compound Y is a material capable of being halogenated, preferably a compound having a multiple bond, such as an alkyne, alkene, allene, or carbon monoxide. Another suitable material capable of being halogenated is a cyclopropane. A catalyst effectively transfers halogen from CF3CX?CXCF3 to the halogen acceptor compound. Since Y is not hydrogen, the formation of CF3CX?CHCF3 is greatly reduced or eliminated.Type: ApplicationFiled: May 19, 2011Publication date: November 24, 2011Applicant: HONEYWELL INTERNATIONAL INC.Inventors: Andrew Joseph Poss, David Nalewajek, Haridasan K. Nair, Michael Van Der Puy, Rajiv Ratna Singh
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Publication number: 20110288349Abstract: The present invention provides a method for the preparation of suitable chlorofluorocarbon and hydrochlorofluorocarbon materials or chlorofluorocarbon and hydrochlorofluorocarbon alkene and alkyne intermediates which serve as useful feedstock for fluorination and reduction to cis-1,1,1,4,4,4-hexafluoro-2-butene. Also presented is a continuous process for the production of cis-1,1,1,4,4,4-hexafluoro-2-butene from the alkene and alkyne intermediates.Type: ApplicationFiled: May 19, 2011Publication date: November 24, 2011Applicant: HONEYWELL INTERNATIONAL INC.Inventors: Andrew Joseph Poss, David Nalewajek, Michael Van Der Puy, Haridasan K. Nair
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Patent number: 7951982Abstract: Disclosed is a process for the preparation of fluorinated olefins. In preferred embodiments C3 olefins are produced by methods comprising contacting a compound of the Formula (I) C(R1aR2bR3c)??(I) with a compound of Formula (II) C(R1aR2bR3c)Cn(R1aR2bR3c)??II wherein R1a, R2b, and R3c are independently a hydrogen atom or a halogen selected from the group consisting of fluorine; chlorine, bromine and iodine, provided that the compound of formula I has at least three halogen substituents and that said at three halogen substituents comprise at least one fluorine; a, b and c are independently=0, 1, 2 or 3 and (a+b+c)=2 or 3; and n is 0 or 1, under conditions effective to produce at least one C3 fluoroolefin.Type: GrantFiled: November 3, 2006Date of Patent: May 31, 2011Assignee: Honeywell International Inc.Inventors: Sudip Mukhopadhyay, Haridasan K. Nair, Hsueh S. Tung, Michael Van Der Puy, Robert C. Johnson, Daniel C. Merkel
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Patent number: 7880040Abstract: Disclosed is a method for producing fluorinated organic compounds, including hydrofluoropropenes, which preferably comprises converting at least one compound of formula (I): CF3CFnCHmXa-m??(I) to at least one compound of formula (II) CF3CZCHZ??(II). where each X is independently Cl, I or Br; each Z is independently H or F; n is 1 or 2; m is 1, 2 or 3, provided that when n is 1, m is 1 or 2; a is 2 or 3, and a-m?0. Certain embodiments include the step of reacting fluorinated C2 olefin, such as tetrafluoroethylene, with a C1 addition agent under conditions effective to produce a compound of formula (I).Type: GrantFiled: November 3, 2006Date of Patent: February 1, 2011Assignee: Honeywell International Inc.Inventors: Sudip Mukhopadhyay, Haridasan K. Nair, Hsueh S. Tung, Michael Van Der Puy, Rajiv R. Singh, Haiyou Wang, Robert C. Johnson, Rajesh K. Dubey
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Publication number: 20100233057Abstract: Processes and systems for the production of phosphorus pentafluoride (PF5) through continuous fluorination of phosphorus are provided herein. A phosphorus feed stream and a fluorine feed stream are provided to a reactor, wherein they are reacted in a gas-gas or liquid-gas reaction to produce phosphorus pentafluoride (PF5). The phosphorus feed can be derived from white phosphorus or yellow phosphorus, and can be provided to the reactor as a liquid or a vapor. The fluorine can be provided to the reactor as a vapor, and preferably comprises elemental fluorine gas.Type: ApplicationFiled: March 11, 2010Publication date: September 16, 2010Applicant: HONEYWELL INTERNATIONAL INC.Inventors: Matthew H. Luly, Robert A. Smith, Haridasan K. Nair, Philip DePrato, Konstantin A. Pokrovski, Daniel C. Merkel, Kevin Uhrich, Stephen A. Cottrell, Daniel J. Brenner
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Publication number: 20100210883Abstract: Disclosed are methods for producing fluorinated organic compounds, including hydrofluoropropenes, which preferably comprises converting at least one compound of formula (I): CF3CHXCH2X ??(I) to at least one compound of formula (II) CF3CZCHZ ??(II). where X is independently Cl, Br, I or F, and Z independently is H or F. In certain preferred embodiments, each Z is different.Type: ApplicationFiled: February 8, 2010Publication date: August 19, 2010Applicant: HONEYWELL INTERNATIONAL INC.Inventors: Sudip Mukhopadhyay, Haridasan K. Nair, Hsueh S. Tung, Michael Van Der Puy, Daniel C. Merkel, Rajesh K. Dubey, Jing Ji Ma
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Publication number: 20100139274Abstract: Aspects of the present invention are directed to working fluids and their use in processes wherein the working fluids comprise compounds having the structure of formula (I): wherein R1, R2, R3, and R4 are each independently selected from the group consisting of: H, F, Cl, Br, and C1-C6 alkyl, at least C6 aryl, at least C3 cycloalkyl, and C6-C15 alkylaryl optionally substituted with at least one F, Cl, or Br, wherein formula (I) contains at least one F and at least one Cl or Br, provided that if any R is Br, then the compound does not have hydrogen. The working fluids are useful in Rankine cycle systems for efficiently converting waste heat generated from industrial processes, such as electric power generation from fuel cells, into mechanical energy or further to electric power. The working fluids of the invention are also useful in equipment employing other thermal energy conversion processes and cycles.Type: ApplicationFiled: December 3, 2009Publication date: June 10, 2010Applicant: HONEYWELL INTERNATIONAL INC.Inventors: Gary Zyhowski, Ryan Hulse, Haridasan K. Nair, David Nalewajek, Rajiv R. Singh
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Patent number: 7714177Abstract: Disclosed is a process for the synthesis of 1,3,3,3-tetrafluoropropene comprising: a) reacting a compound of the formula (I) CHFX2 with a compound of formula (II) CH2?CF2 to produce a reaction product comprising a compound of formula (III) CHXFCH2CXF2, wherein each X is independently selected from the group consisting of chlorine, bromine and iodine; and (b) exposing said compound of formula (III) to reaction conditions effective to convert said compound to 1,3,3,3-tetrafluoropropene.Type: GrantFiled: January 7, 2008Date of Patent: May 11, 2010Assignee: Honeywell International Inc.Inventors: Sudip Mukhopadhyay, Haridasan K. Nair, Hsueh S. Tung, Michael Van Der Puy
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Patent number: 7674939Abstract: Disclosed are methods for producing fluorinated organic compounds, including hydrofluoropropenes, which preferably comprises converting at least one compound of formula (I): CF3CHXCH2X??(I) to at least one compound of formula (II) CF3CZCHZ??(II). where X is independently Cl, Br, I or F, and Z independently is H or F. In certain preferred embodiments, each Z is different.Type: GrantFiled: November 3, 2006Date of Patent: March 9, 2010Assignee: Honeywell International Inc.Inventors: Sudip Mukhopadhyay, Haridasan K. Nair, Hsueh S. Tung, Michael Van Der Puy, Daniel C. Merkel, Rajesh K. Dubey, Jing Ji Ma
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Patent number: 7659434Abstract: A method for preparing fluorinated organic compounds comprising contacting hydrogen fluoride with at least one compound of formula I: CX3CXYCH3??I where each X is independently Cl, I or Br, and each Y is independently H or F, said contacting step being carried out under conditions effective to produce a compound of formula II CF3CZCH2??II where Z is Cl, I, Br, or F.Type: GrantFiled: November 3, 2006Date of Patent: February 9, 2010Assignee: Honeywell International Inc.Inventors: Sudip Mukhopadhyay, Haridasan K. Nair, Hsueh S. Tung, Michael Van Der Puy, Daniel C. Merkel, Rajesh K. Dubey, Jing Ji Ma, Barbara A. Light, Kim M. Fleming, Cheryl L. Bortz, Richard Udy
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Patent number: 7531701Abstract: A process for the preparation of an allyloxytrifluoropropene derivative of the formula CF3CH?CR1(OCH2CR?CH2) wherein R1 is hydrogen, fluoro, or an allyloxy group represented by the formula —OCH2CR?CH2 wherein R is hydrogen or methyl including contacting (I) a compound represented by the formula CF3CH?CR2R3 wherein R2 is selected from the group consisting of hydrogen, chloro, and fluoro and wherein R3 is chloro or fluoro; and (ii) an allyl alcohol derivative of the formula HOCH2CR?CH2 wherein R is selected from the group consisting of: hydrogen and methyl; wherein the contacting is carried out in the presence of a base and optionally a solvent at a temperature and length of time sufficient to produce the allyloxytrifluoropropene derivative. A process for the preparation of polymers of the allyloxytrifluoropropene derivatives is also provided.Type: GrantFiled: September 10, 2007Date of Patent: May 12, 2009Assignee: Honeywell International Inc.Inventors: Haridasan K. Nair, Rajiv R. Singh, Gregory J. Shafer