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).

  • Publication number: 20170088662
    Abstract: The invention provides polyurethane and polyisocyanurate foams and methods for the preparation thereof. More particularly, the invention relates to open-celled, polyurethane and polyisocyanurate foams and methods for their preparation. The foams are characterized by a fine uniform cell structure and little or no foam collapse. The foams are produced with a polyol premix composition which comprises a combination of a hydrohaloolefin blowing agent, a polyol, a silicone surfactant, and a sterically hindered amine catalyst.
    Type: Application
    Filed: December 14, 2016
    Publication date: March 30, 2017
    Inventors: Michael Van Der Puy, David J. Williams, Haridasan K. Nair, David Nalewajek
  • Patent number: 9550854
    Abstract: The invention provides polyurethane and polyisocyanurate foams and methods for the preparation thereof. More particularly, the invention relates to open-celled, polyurethane and polyisocyanurate foams and methods for their preparation. The foams are characterized by a fine uniform cell structure and little or no foam collapse. The foams are produced with a polyol premix composition which comprises a combination of a hydrohaloolefin blowing agent, a polyol, a silicone surfactant, and a sterically hindered amine catalyst.
    Type: Grant
    Filed: September 30, 2008
    Date of Patent: January 24, 2017
    Assignee: HONEYWELL INTERNATIONAL INC.
    Inventors: Michael Van Der Puy, David J. Williams, Haridasan K. Nair, David Nalewajek
  • Publication number: 20160215191
    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: November 2, 2015
    Publication date: July 28, 2016
    Inventors: Rajiv R. Singh, Haridasan K. Nair, Raymond H. Thomas, Lawrence A. Ford, David P. Wilson
  • Patent number: 9353030
    Abstract: Disclosed is a one step process for making of 1,1,1,4,4,4-hexafluoro-2-butene. More specifically, the present invention provides a process for making hexafluoro-2-butene, continuously, from 2-chloro-3,3,3-trifluoropronene using Fe2O3/NiO impregnated carbon catalyst at 600° to 650° C.
    Type: Grant
    Filed: June 12, 2015
    Date of Patent: May 31, 2016
    Assignee: Honeywell International Inc.
    Inventors: Haridasan K. Nair, David Nalewajek, Glenn Matthies
  • Publication number: 20160023972
    Abstract: Disclosed is a one step process for making of 1,1,1,4,4,4-hexafluoro-2-butene. More specifically, the present invention provides a process for making hexafluoro-2-butene, continuously, from 2-chloro-3,3,3-trifluoropronene using Fe2O3/NiO impregnated carbon catalyst at 600° to 650° C.
    Type: Application
    Filed: June 12, 2015
    Publication date: January 28, 2016
    Inventors: Haridasan K. Nair, David Nalewajek, Glenn Matthies
  • Publication number: 20160023973
    Abstract: To address the problem of insufficient biodegradability of perfluorinated surfactants, the present invention provides biodegradable fluorosurfactants derived from olefins having —CHR, —CHRf, —CHF, and/or —CH2 groups, where R is an alkyl group and Rf is a perfluoro or fluroroalkyl group. Preferably, the —CHR, —CHRf, —CHF, and/or —CH2 groups are contained within partially fluorinated alkenes.
    Type: Application
    Filed: October 7, 2015
    Publication date: January 28, 2016
    Inventors: Haridasan K. Nair, Yian Zhai, Andrew J. Poss, Rajiv R. Singh, David Nalewajek
  • Patent number: 9175201
    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: Grant
    Filed: March 13, 2012
    Date of Patent: November 3, 2015
    Assignee: HONEYWELL INTERNATIONAL INC.
    Inventors: Rajiv R. Singh, Haridasan K. Nair, Raymond H. Thomas, Lawrence A. Ford, David P. Wilson
  • Patent number: 9126889
    Abstract: To address the problem of insufficient biodegradability of perfluorinated surfactants, the present invention provides biodegradable fluorosurfactants derived from olefins having —CHR, —CHRf, —CHF, and/or —CH2 groups, where R is an alkyl group and Rf is a perfluoro or fluroroalkyl group. Preferably, the —CHR, —CHRf, —CHF, and/or —CH2 groups are contained within partially fluorinated alkenes.
    Type: Grant
    Filed: August 14, 2014
    Date of Patent: September 8, 2015
    Assignee: HONEYWELL INTERNATIONAL INC.
    Inventors: Haridasan K. Nair, Yian Zhai, Andrew J. Poss, Rajiv R. Singh, David Nalewajek
  • Patent number: 9061957
    Abstract: Disclosed is a method for producing fluorinated organic compounds, including reacting CF2?CFCl with CH2FCl under conditions effective to produce a product composition including CF3CClFCH2Cl. The present invention also relates to the production of 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 C1 addition agent under conditions effective to produce a compound of formula (I).
    Type: Grant
    Filed: January 22, 2013
    Date of Patent: June 23, 2015
    Assignee: HONEYWELL INTERNATIONAL INC.
    Inventors: Sudip Mukhopadhyay, Haridasan K. Nair, Rajesh K. Dubey, Rajiv R. Singh, George A. Shia
  • Patent number: 9029616
    Abstract: The present invention provides routes for making 1-chloro-3,3,3-trifluoropropene (HCFO-1233zd) from commercially available raw materials. More specifically, this invention provides routes for HCFO-1233zd from inexpensive and commercially available trifluoromethane (HFC-23).
    Type: Grant
    Filed: July 14, 2014
    Date of Patent: May 12, 2015
    Assignee: Honeywell International Inc.
    Inventors: Haridasan K. Nair, Andrew Joseph Poss, David Nalewajek, Yian Zhai
  • Patent number: 9029617
    Abstract: The present invention provides routes for making 1-chloro-3,3,3-trifluoropropene (HCFO-1233zd) from commercially available raw materials. More specifically, this invention provides several routes for forming HCFO-1233zd from 3,3,3-trifluoropropene (FC-1234zf).
    Type: Grant
    Filed: July 14, 2014
    Date of Patent: May 12, 2015
    Assignee: Honeywell International Inc.
    Inventors: Haridasan K. Nair, David Nalewajek, Andrew Joseph Poss, Yian Zhai
  • Publication number: 20150065746
    Abstract: To address the problem of insufficient biodegradability of perfluorinated surfactants, the present invention provides biodegradable fluorosurfactants derived from olefins having —CHR, —CHRf, —CHF, and/or —CH2 groups, where R is an alkyl group and Rf is a perfluoro or fluroroalkyl group. Preferably, the —CHR, —CHRf, —CHF, and/or —CH2 groups are contained within partially fluorinated alkenes.
    Type: Application
    Filed: August 14, 2014
    Publication date: March 5, 2015
    Inventors: Haridasan K. Nair, Yian Zhai, Andrew J. Poss, Rajiv R. Singh, David Nalewajek
  • Publication number: 20150045588
    Abstract: The present invention provides routes for making 1-chloro-3,3,3-trifluoropropene (HCFO-1233zd) from commercially available raw materials. More specifically, this invention provides routes for HCFO-1233zd from inexpensive and commercially available trifluoromethane (HFC-23).
    Type: Application
    Filed: July 14, 2014
    Publication date: February 12, 2015
    Inventors: Haridasan K. Nair, Andrew Joseph Poss, David Nalewajek, Yian Zhai
  • Publication number: 20150045590
    Abstract: The present invention provides routes for making 1-chloro-3,3,3-trifluoropropene (HCFO-1233zd) from commercially available raw materials. More specifically, this invention provides several routes for forming HCFO-1233zd from 3,3,3-trifluoropropene (FC-1234zf).
    Type: Application
    Filed: July 14, 2014
    Publication date: February 12, 2015
    Inventors: Haridasan K. Nair, David Nalewajek, Andrew Joseph Poss, Yian Zhai
  • Publication number: 20140366540
    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: September 2, 2014
    Publication date: December 18, 2014
    Inventors: Gary Zyhowski, Ryan J. Hulse, Haridasan K. Nair, David Nalewajek, Rajiv R. Singh
  • Patent number: 8901360
    Abstract: Disclosed is a process for preparing cis-1,1,1,4,4,4-hexafluorobutene 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: Grant
    Filed: May 19, 2011
    Date of Patent: December 2, 2014
    Assignee: Honeywell International Inc.
    Inventors: Andrew Joseph Poss, David Nalewajek, Haridasan K. Nair, Michael Van Der Puy
  • Patent number: 8889924
    Abstract: The present invention provides a simple three step process for the production of 1,3,3,3-tetrafluoropropene (HFO-1234ze). In the first step, carbon tetrachloride is added to vinyl fluoride to afford the compound CCl3CH2CHClF (HCFC-241fb). HCFC-241fb is then fluorinated with anhydrous HF to afford CF3CH2CHClF (HCFC-244fa) in the second step. Dehydrochlorination of HCFC-244fa, in the third step, affords the desired product, CF3CH?CHF (HFO-1234ze). Following similar chemistry, vinyl chloride may be used in place of vinyl fluoride.
    Type: Grant
    Filed: February 4, 2013
    Date of Patent: November 18, 2014
    Assignee: Honeywell International Inc.
    Inventors: Haridasan K. Nair, Rajiv Ratna Singh, Andrew Joseph Poss, David Nalewajek
  • Patent number: 8829254
    Abstract: The present invention describes a process for making CF3CH?CHF (HFO-1234ze). The process involves the addition of carbon tetrachloride (CCl4) to 1,2-dichloroethylene to form CCl3CHClCHCl2. The compound CCl3CHClCHCl2 thus can then either be treated with HF to produce CF3CHClCHClF as the main product, or it can be converted to CCl2?CHCHCl2 (1230za) by dechlorination. CCl2?CHCHCl2 can be treated with HF such that the main product obtained is CF3CHClCHClF. CF3CH?CHCl may be produced as a by-product, but upon treatment with HF, it affords the compound CF3CHClCHClF. The desired compound, CF3CH?CHF (HFO-1234ze), is obtained as a trans/cis mixture by dehydrochlorination of CF3CH2CHClF or by dechlorination of CF3CHClCHClF.
    Type: Grant
    Filed: February 4, 2013
    Date of Patent: September 9, 2014
    Assignee: Honeywell International Inc.
    Inventors: Haridasan K. Nair, Rajiv Ratna Singh, David Nalewajek, Andrew Joseph Poss
  • Patent number: 8820079
    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: Grant
    Filed: December 3, 2009
    Date of Patent: September 2, 2014
    Assignee: Honeywell International Inc.
    Inventors: Gary Zyhowski, Ryan J. Hulse, Haridasan K. Nair, David Nalewajek, Rajiv R. Singh
  • Patent number: 8784763
    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: Grant
    Filed: March 11, 2010
    Date of Patent: July 22, 2014
    Assignee: 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