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: 10934233
    Abstract: The present invention relates to a process for the preparation of haloethylenes, and preferably perhaloethylenes, by the gas-phase dechlorination of haloethanes in the presence of a catalyst and optionally in the presence of an alkene or an alkane. In particular aspects, the invention relates to a gas-phase process for preparing chlorotrifluoroethylene (CTFE). More particularly, the present invention relates to a gas-phase process for preparing CTFE from 1,1,2-trichloro-1,2,2-trifluoroethane (CFC-113) by dechlorination in the presence of an alkene or an alkane and a catalyst.
    Type: Grant
    Filed: February 5, 2019
    Date of Patent: March 2, 2021
    Assignee: HONEYWELL INTERNATIONAL INC.
    Inventors: Haridasan K. Nair, Rajiv Ratna Singh, Glenn Matthies
  • Publication number: 20200377366
    Abstract: A process for the manufacture of hydrogen iodide (HI) from hydrogen (H2) and elemental iodine (I2) dissolved in a suitable solvent with use of at least one catalyst selected from the group of platinum, palladium, nickel, cobalt, iron, nickel oxide, cobalt oxide, and iron oxide.
    Type: Application
    Filed: May 29, 2020
    Publication date: December 3, 2020
    Inventors: Haridasan K. Nair, Ryan J. Hulse
  • Publication number: 20200369933
    Abstract: The present disclosure provides azeotrope or azeotrope-like compositions including trifluoroiodomethane (CF3I) and trifluoroacetyl chloride (CF3COCl), and a method of forming an azeotrope or azeotrope-like composition comprising the step of combining trifluoroacetyl chloride (CF3COCl) and trifluoroiodomethane (CF3I) to form an azeotrope or azeotrope-like composition.
    Type: Application
    Filed: May 14, 2020
    Publication date: November 26, 2020
    Inventors: Hang T. Pham, Ryan J. Hulse, Rajiv Ratna Singh, Haridasan K. Nair
  • Patent number: 10752565
    Abstract: The present disclosure provides a gas-phase process for producing trifluoroiodomethane, the process comprising providing a reactant stream comprising hydrogen iodide and trifluoroacetyl halide selected from the group consisting of trifluoroacetyl chloride, trifluoroacetyl fluoride, trifluoroacetyl bromide, and combinations thereof, and reacting the reactant stream in the presence of a catalyst at a temperature from about 200° C. to about 600° C. to produce a product stream comprising the trifluoroiodomethane.
    Type: Grant
    Filed: August 23, 2019
    Date of Patent: August 25, 2020
    Assignee: Honeywell International Inc.
    Inventors: Haridasan K. Nair, Rajiv Banavali, Rajiv Ratna Singh
  • Patent number: 10696613
    Abstract: Disclosed are processes for the dechlorination of haloethanes comprising reacting in the gaseous phase a haloethane and reducing agent such as an alkene, an alkane, hydrogen or combinations of two or more of these, in the presence of a silicon-based catalyst.
    Type: Grant
    Filed: July 9, 2019
    Date of Patent: June 30, 2020
    Assignee: HONEYWELL INTERNATIONAL INC.
    Inventors: Haridasan K. Nair, Rajiv Ratna Singh, Mark Makar
  • Publication number: 20200062679
    Abstract: The present disclosure provides a process for producing trifluoroiodomethane, the process comprising providing a reactant stream comprising hydrogen iodide and at least one trifluoroacetyl halide selected from the group consisting of trifluoroacetyl chloride, trifluoroacetyl fluoride, trifluoroacetyl bromide, and combinations thereof, reacting the reactant stream in the presence of a first catalyst at a first reaction temperature from about 25° C. to about 400° C. to produce an intermediate product stream comprising trifluoroacetyl iodide, and reacting the intermediate product stream in the presence of a second catalyst at a second reaction temperature from about 200° C. to about 600° C. to produce a final product stream comprising the trifluoroiodomethane.
    Type: Application
    Filed: August 23, 2019
    Publication date: February 27, 2020
    Inventors: Haridasan K. Nair, Glenn Matthies, Rajiv Ratna Singh, Terris Yang, Haiyou Wang, Ryan J. Hulse, Rajiv Banavali
  • Publication number: 20200062678
    Abstract: The present disclosure provides a gas-phase process for producing trifluoroiodomethane, the process comprising providing a reactant stream comprising hydrogen iodide and trifluoroacetyl halide selected from the group consisting of trifluoroacetyl chloride, trifluoroacetyl fluoride, trifluoroacetyl bromide, and combinations thereof, and reacting the reactant stream in the presence of a catalyst at a temperature from about 200° C. to about 600° C. to produce a product stream comprising the trifluoroiodomethane.
    Type: Application
    Filed: August 23, 2019
    Publication date: February 27, 2020
    Inventors: Haridasan K. Nair, Rajiv Banavali, Rajiv Ratna Singh
  • Publication number: 20190315905
    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: October 15, 2018
    Publication date: October 17, 2019
    Inventors: Michael Van Der Puy, David J. Williams, Haridasan K. Nair, David Nalewajek
  • Publication number: 20190241489
    Abstract: The present invention relates to a process for the preparation of haloethylenes, and preferably perhaloethylenes, by the gas-phase dechlorination of haloethanes in the presence of a catalyst and optionally in the presence of an alkene or an alkane. In particular aspects, the invention relates to a gas-phase process for preparing chlorotrifluoroethylene (CTFE). More particularly, the present invention relates to a gas-phase process for preparing CTFE from 1,1,2-trichloro-1,2,2-trifluoroethane (CFC-113) by dechlorination in the presence of an alkene or an alkane and a catalyst.
    Type: Application
    Filed: February 5, 2019
    Publication date: August 8, 2019
    Inventors: Haridasan K. Nair, Rajiv Ratna Singh, Glenn Matthies
  • Publication number: 20190136108
    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: July 27, 2018
    Publication date: May 9, 2019
    Applicant: HONEYWELL INTERNATIONAL INC.
    Inventors: RAJIV R. SINGH, HARIDASAN K. NAIR, RAYMOND H. THOMAS, LAWRENCE A. FORD, DAVID P. WILSON
  • Publication number: 20190055442
    Abstract: Disclosed are compositions comprising at least one iodocarbon compound and preferably at least one stabilization agent comprising a diene-based compound. 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: July 20, 2018
    Publication date: February 21, 2019
    Inventors: Rajiv R. Singh, Haridasan K. Nair, Raymond H. Thomas, Lawrence A. Ford, David P. Wilson
  • Patent number: 10071940
    Abstract: Disclosed is a process for the formation of a mixture of the compounds 2,3,3,3-tetrafluoropropene (HFO-1234yf) and vinylidene fluoride, comprising pyrolyzing 1,1,2-trifluoro-2-trifluoro-methyl-cyclobutane under conditions effective to produce a reaction product comprising HFO-1234yf and vinylidene fluoride in a 1234yf:vinylidene fluoride molar ratio of from about 0.5 to about 1.2.
    Type: Grant
    Filed: September 20, 2017
    Date of Patent: September 11, 2018
    Assignee: Honeywell International Inc.
    Inventors: Rajiv Banavali, Haridasan K. Nair, Yian Zhai
  • Patent number: 10035743
    Abstract: A method for converting 1, 3, 3, 3-tetrafluoropropene (HFO-1234ze) to 1-chloro-3, 3, 3-trifluoropropene (HCFC-1233zd) with high selectivity and without significant formation of 1, 1, 1, 3, 3-pentafluoropropane (HFC-245fa), by reacting 1234ze and hydrogen chloride (HCl) in a gas phase using a ferric chloride (FeCl3) catalyst or a ruthenium chloride (RuCl3) catalyst.
    Type: Grant
    Filed: October 30, 2017
    Date of Patent: July 31, 2018
    Assignee: Honeywell International Inc.
    Inventors: Haridasan K. Nair, Rajiv Ratna Singh
  • Patent number: 10005705
    Abstract: The production of 1, 1, 2-trifluoro-2-(trifluoromethyl)cyclobutane (TFMCB). More specifically, the present invention relates to a process for making 1, 1, 2-trifluoro-2-(trifluoromethyl)cyclobutane via a continuous catalytic reaction from commercially available raw materials ethylene and hexafluoropropene.
    Type: Grant
    Filed: November 8, 2017
    Date of Patent: June 26, 2018
    Assignee: Honeywell International Inc.
    Inventors: Haridasan K. Nair, Rajiv Banavali, Yian Zhai, Glenn Matthies
  • Publication number: 20180072642
    Abstract: Disclosed is a process for the formation of a mixture of the compounds 2,3,3,3-tetrafluoropropene (HFO-1234yf) and vinylidene fluoride, comprising pyrolyzing 1,1,2-trifluoro-2-trifluoro-methyl-cyclobutane under conditions effective to produce a reaction product comprising HFO-1234yf and vinylidene fluoride in a 1234yf:vinylidene fluoride molar ratio of from about 0.5 to about 1.2.
    Type: Application
    Filed: September 20, 2017
    Publication date: March 15, 2018
    Inventors: Rajiv Banavali, Haridasan K. Nair, Yian Zhai
  • Publication number: 20180065905
    Abstract: The production of 1, 1, 2-trifluoro-2-(trifluoromethyl)cyclobutane (TFMCB). More specifically, the present invention relates to a process for making 1, 1, 2-trifluoro-2-(trifluoromethyl)cyclobutane via a continuous catalytic reaction from commercially available raw materials ethylene and hexafluoropropene.
    Type: Application
    Filed: November 8, 2017
    Publication date: March 8, 2018
    Inventors: Haridasan K. Nair, Rajiv Banavali, Yian Zhai, Glenn Matthies
  • Patent number: 9856193
    Abstract: The production of 1,1,2-trifluoro-2-(trifluoromethyl)cyclobutane (TFMCB). More specifically, the present invention relates to a process for making 1,1,2-trifluoro-2-(trifluoromethyl)cyclobutane via a continuous catalytic reaction from commercially available raw materials ethylene and hexafluoropropene.
    Type: Grant
    Filed: May 1, 2017
    Date of Patent: January 2, 2018
    Assignee: Honeywell International Inc.
    Inventors: Haridasan K. Nair, Rajiv Banavali, Yian Zhai, Glenn Matthies
  • Patent number: 9790151
    Abstract: Disclosed is a process for the formation of a mixture of the compounds 2,3,3,3-tetrafluoropropene (1234yf) and vinylidene fluoride, comprising pyrolyzing 1,1,2-trifluoro-2-trifluoro-methyl-cyclobutane under conditions effective to produce a reaction product comprising 1234yf and vinylidene fluoride in a 1234yf:vinylidene fluoride molar ratio of from about 0.5 to about 1.2.
    Type: Grant
    Filed: November 8, 2016
    Date of Patent: October 17, 2017
    Assignee: Honeywell International Inc.
    Inventors: Rajiv Banavali, Haridasan K. Nair, Yian Zhai
  • Publication number: 20170233316
    Abstract: The production of 1,1,2-trifluoro-2-(trifluoromethyl)cyclobutane (TFMCB). More specifically, the present invention relates to a process for making 1,1,2-trifluoro-2-(trifluoromethyl)cyclobutane via a continuous catalytic reaction from commercially available raw materials ethylene and hexafluoropropene.
    Type: Application
    Filed: May 1, 2017
    Publication date: August 17, 2017
    Inventors: Haridasan K. Nair, Rajiv Banavali, Yian Zhai, Glenn Matthies
  • Publication number: 20170137353
    Abstract: Disclosed is a process for the formation of a mixture of the compounds 2,3,3,3-tetrafluoropropene (1234yf) and vinylidine fluoride, comprising pyrolyzing 1,1,2-trifluoro-2-trifluoro-methyl-cyclobutane under conditions effective to produce a reaction product comprising 1234yf and vinylidine fluoride in a 1234yf:vinylidine fluoride molar ratio of from about 0.5 to about 1.2.
    Type: Application
    Filed: November 8, 2016
    Publication date: May 18, 2017
    Inventors: Rajiv Banavali, Haridasan K. Nair, Yian Zhai