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).

  • Patent number: 8524955
    Abstract: 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: Grant
    Filed: May 19, 2011
    Date of Patent: September 3, 2013
    Assignee: Honeywell International Inc.
    Inventors: Andrew Joseph Poss, David Nalewajek, Haridasan K. Nair, Michael Van Der Puy, Rajiv Ratna Singh
  • Patent number: 8404907
    Abstract: 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: Grant
    Filed: February 18, 2011
    Date of Patent: March 26, 2013
    Assignee: Honeywell International Inc.
    Inventors: Haridasan K. Nair, Andrew Joseph Poss, Rajiv Ratna Singh, Michael Van Der Puy, Ryan J. Hulse
  • Patent number: 8395000
    Abstract: 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: Grant
    Filed: February 8, 2010
    Date of Patent: March 12, 2013
    Assignee: 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
  • Patent number: 8383867
    Abstract: 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: Grant
    Filed: November 3, 2006
    Date of Patent: February 26, 2013
    Assignee: Honeywell International Inc.
    Inventors: Sudip Mukhopadhyay, Haridasan K. Nair, Rajesh K. Dubey, Rajiv R. Singh, George A. Shia
  • Publication number: 20130004402
    Abstract: 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: Application
    Filed: May 31, 2012
    Publication date: January 3, 2013
    Applicant: Honeywell International Inc.
    Inventors: Robert A. Smith, Daniel J. Brenner, Matthew H. Luly, Haridasan K. Nair, Bernard Pointner
  • Publication number: 20120215041
    Abstract: 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: Application
    Filed: February 18, 2011
    Publication date: August 23, 2012
    Inventors: Haridasan K. Nair, Andrew Joseph Poss, Rajiv Ratna Singh, Michael Van Der Puy, Ryan J. Hulse
  • Publication number: 20120187330
    Abstract: 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: Application
    Filed: March 13, 2012
    Publication date: July 26, 2012
    Applicant: HONEYWELL INTERNATIONAL INC.
    Inventors: RAJIV R. SINGH, HARIDASAN K. NAIR, RAYMOND H. THOMAS, LAWRENCE A. FORD, DAVID P. WILSON
  • Publication number: 20110288350
    Abstract: 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: Application
    Filed: May 19, 2011
    Publication date: November 24, 2011
    Applicant: HONEYWELL INTERNATIONAL INC.
    Inventors: Andrew Joseph Poss, Michael Van Der Puy, Rajiv Ratna Singh, David Nalewajek, Haridasan K. Nair
  • Publication number: 20110288346
    Abstract: 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: Application
    Filed: May 19, 2011
    Publication date: November 24, 2011
    Applicant: HONEYWELL INTERNATIONAL INC.
    Inventors: Andrew Joseph Poss, David Nalewajek, Haridasan K. Nair, Michael Van Der Puy
  • Publication number: 20110288348
    Abstract: 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: Application
    Filed: May 19, 2011
    Publication date: November 24, 2011
    Applicant: HONEYWELL INTERNATIONAL INC.
    Inventors: Andrew Joseph Poss, David Nalewajek, Haridasan K. Nair, Michael Van Der Puy, Rajiv Ratna Singh
  • Publication number: 20110288349
    Abstract: 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: Application
    Filed: May 19, 2011
    Publication date: November 24, 2011
    Applicant: HONEYWELL INTERNATIONAL INC.
    Inventors: Andrew Joseph Poss, David Nalewajek, Michael Van Der Puy, Haridasan K. Nair
  • Patent number: 7951982
    Abstract: 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: Grant
    Filed: November 3, 2006
    Date of Patent: May 31, 2011
    Assignee: Honeywell International Inc.
    Inventors: Sudip Mukhopadhyay, Haridasan K. Nair, Hsueh S. Tung, Michael Van Der Puy, Robert C. Johnson, Daniel C. Merkel
  • Patent number: 7880040
    Abstract: 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: Grant
    Filed: November 3, 2006
    Date of Patent: February 1, 2011
    Assignee: 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
  • Publication number: 20100233057
    Abstract: 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: Application
    Filed: March 11, 2010
    Publication date: September 16, 2010
    Applicant: 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
  • Publication number: 20100210883
    Abstract: 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: Application
    Filed: February 8, 2010
    Publication date: August 19, 2010
    Applicant: 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
  • Publication number: 20100139274
    Abstract: 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: Application
    Filed: December 3, 2009
    Publication date: June 10, 2010
    Applicant: HONEYWELL INTERNATIONAL INC.
    Inventors: Gary Zyhowski, Ryan Hulse, Haridasan K. Nair, David Nalewajek, Rajiv R. Singh
  • Patent number: 7714177
    Abstract: 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: Grant
    Filed: January 7, 2008
    Date of Patent: May 11, 2010
    Assignee: Honeywell International Inc.
    Inventors: Sudip Mukhopadhyay, Haridasan K. Nair, Hsueh S. Tung, Michael Van Der Puy
  • Patent number: 7674939
    Abstract: 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: Grant
    Filed: November 3, 2006
    Date of Patent: March 9, 2010
    Assignee: 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
  • Patent number: 7659434
    Abstract: 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: Grant
    Filed: November 3, 2006
    Date of Patent: February 9, 2010
    Assignee: 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
  • Patent number: 7531701
    Abstract: 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: Grant
    Filed: September 10, 2007
    Date of Patent: May 12, 2009
    Assignee: Honeywell International Inc.
    Inventors: Haridasan K. Nair, Rajiv R. Singh, Gregory J. Shafer