Patents by Inventor Yian Zhai

Yian Zhai 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: 20240376028
    Abstract: Production of HFO-1132 and, in particular, HFO-1132E, may be produced from 1,1,2-trichloro-1,2,2-trifluoroethane (CFC-113). In a first step, 1,1,2-trifluoroethane (HFC-143) is produced by hydrogenating 1,1,2-trichloro-1,2,2-trifluoroethane (CFC-113) by reaction with hydrogen in the presence of a catalyst to produce 1,1,2-trifluoroethane (HFC-143). The 1,1,2-trifluoroethane (HFC-143) may then be dehydrofluorinated in the presence of a catalyst to produce trans-1,2-difluoroethylene (HFO-1132E) and/or cis-1,2-difluoroethylene (HFO-1132Z). The cis-1,2-difluoroethylene (HFO-1132Z) may then be isomerized to produce trans-1,2-difluoroethylene (HFO-1132E).
    Type: Application
    Filed: May 8, 2024
    Publication date: November 14, 2024
    Inventors: Haiyou Wang, Alexey Kruglov, Yian Zhai, Dimitrios Papanastasiou, Sudharsanam Ramanathan, Christophe Roger, Hsien-cheng YU, Akbar Mahdavi-Shakib
  • Publication number: 20240376363
    Abstract: A heat transfer composition for transferring heat and/or energy to and/or from an article, device or fluid, wherein the heat transfer composition comprises, consists essentially of or consists of a compound according to Formula I or Formula II or Formula III: where each R and each R? is independently selected from H, F, Cl, R1, and OR1, each R1 is independently: a C1 to C3 alkane that is unsubstituted or substituted with F and/or Cl; or C1 to C3 alkene that is unsubstituted or substituted with F and/or Cl; or Bz, where Bz is an unsubstituted benzene ring, and provided that the molecule has at least three F substituents bonded to a carbon in the cyclobutene ring.
    Type: Application
    Filed: September 27, 2022
    Publication date: November 14, 2024
    Applicant: HONEYWELL INTERNATIONAL INC.
    Inventors: Yian Zhai, Ryan Hulse, Rajiv Ratna Singh, David Nalewajek
  • Publication number: 20240279520
    Abstract: The fluoroether 3-(difluoromethoxy)-1,1,1,2,2-pentafluoropropane (“HFE-347mcf”) may be used as a refrigerant and/or heat transfer composition, such as in single phase and two phase cooling systems, and a method of heating and/or cooling an electronic component or device includes providing a heat transfer fluid comprising at least about 10% by weight of 3-(difluoromethoxy)-1,1,1,2,2-pentafluoropropane, and transferring heat between the electronic component and the heat transfer fluid. The fluoroether 3-(difluoromethoxy)-1,1,1,2,2-pentafluoropropane may be synthesized by reacting 2,2,3,3,3-pentafluoro-1-propanol with chlorodifluoromethane (R-22).
    Type: Application
    Filed: October 13, 2023
    Publication date: August 22, 2024
    Inventors: Yian Zhai, Sudharsanam Ramanathan, Pramod K.W. Harikumar Warrier, Alexey Kruglov, Dimitrios Papanastasiou, Christophe Roger
  • Patent number: 10913697
    Abstract: The invention relates to a process for reducing the concentration of a fluorinated alkyne impurity, such as 3,3,3-trifluoropropyne (TFPY), in 2,3,3,3-tetrafluoropropene (HFO-1234yf) which comprises contacting such a mixture with a caustic material, such as sodium hydroxide (NaOH), under conditions effective to reduce the concentration of the fluorinated alkyne impurity, including in some practices reducing the concentration by at least about 50%.
    Type: Grant
    Filed: November 2, 2017
    Date of Patent: February 9, 2021
    Assignee: Honeywell International Inc.
    Inventors: Haiyou Wang, Hsueh Sung Tung, Willie Josue Perez, Yian Zhai, Ralph John Borowski, Fang Huang Tu, Lucas Peter Labuda, John L. Welch
  • Publication number: 20200055804
    Abstract: The invention relates to a process for reducing the concentration of a fluorinated alkyne impurity, such as 3,3,3-trifluoropropyne (TFPY), in 2,3,3,3-tetrafluoropropene (HFO-1234yf) which comprises contacting such a mixture with a caustic material, such as sodium hydroxide (NaOH), under conditions effective to reduce the concentration of the fluorinated alkyne impurity, including in some practices reducing the concentration by at least about 50%.
    Type: Application
    Filed: November 2, 2017
    Publication date: February 20, 2020
    Inventors: Haiyou Wang, Hsueh Sung Tung, Willie Josue Perez, Yian Zhai, Ralph John Borowski, Fang Huang Tu, Lucas Peter Labuda, John L. Welch
  • 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: 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
  • 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: 9216932
    Abstract: The present invention is related to making hydrofluorocarbons (HCFCs), more specifically, 3,3,3-trifluoropropyne (TFP), from trans-1-chloro-3,3,3-trifluoropropene (trans-1233zd) by contacting the trans-1233zd with a base. Preferably, the base is potassium hydroxide or potassium tert-butoxide, which may or may not be dissolved in as solvent.
    Type: Grant
    Filed: May 5, 2014
    Date of Patent: December 22, 2015
    Assignee: Honeywell International Inc.
    Inventors: Yian Zhai, Andrew J. Poss, Rajiv R. Singh
  • 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: 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: 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