Patents by Inventor Hsueh Tung

Hsueh Tung 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: 20140256995
    Abstract: The present invention relates, in part, to the discovery that the presence of moisture in 1,1,2,3-tetrachloropropene (HCO-1230xa) results in catalyst deactivation and accelerated corrosion in the reactor during the fluorination of HCO-1230xa to 2-chloro-3,3,3-trifluoropropene. By substantially removing the moisture, it is shown that the catalyst life is extended and results in improved operation efficiency of the fluorination reaction. Such steps similarly result in an overall improvement in the production of certain hydrofluoroolefins, particularly 2,3,3,3-tetrafluoropropene (HFO-1234yf).
    Type: Application
    Filed: September 29, 2012
    Publication date: September 11, 2014
    Applicant: HONEYWELL INTERNATIONAL INC.
    Inventors: Haiyou Wang, Selma Bektesevic, Hsueh Tung
  • Publication number: 20080103341
    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: Application
    Filed: January 7, 2008
    Publication date: May 1, 2008
    Applicant: HONEYWELL INTERNATIONAL INC.
    Inventors: Sudip Mukhopadhyay, Haridasan Nair, Hsueh Tung, Michael Van Der Puy
  • Publication number: 20080042103
    Abstract: The invention relates to azeotropic and azeotrope-like mixtures of HFC-32, HCl, and Cl2, and processes for separating the azeotrope-like mixtures of HFC-32 and HCL and HFC-32, HCL and Cl2.
    Type: Application
    Filed: August 20, 2007
    Publication date: February 21, 2008
    Applicant: HONEYWELL INTERNATIONAL INC.
    Inventors: Hang Pham, Rajiv Singh, Hsueh Tung, Franklin Wong
  • Publication number: 20070278087
    Abstract: The invention relates to azeotropic and azeotrope-like mixtures of 1,1,1,3,3-pentafluorobutane (HFC-365) and hydrogen fluoride and a process for separating the azeotrope-like mixtures. The compositions of the invention are useful as an intermediate in the production of HFC-365. The latter is useful as a nontoxic, zero ozone depleting fluorocarbon useful as a solvent, blowing agent, refrigerant, cleaning agent and aerosol to propellant.
    Type: Application
    Filed: August 21, 2007
    Publication date: December 6, 2007
    Applicant: Honeywell International Inc.
    Inventors: Hang Pham, Rajiv Singh, Hsueh Tung
  • Publication number: 20070238908
    Abstract: Dehydrohalogenation processes for the preparation of fluoropropenes from corresponding halopropanes, in which the fluoropropenes have the formula CF3CY?CXNHP, wherein X and Y are independently hydrogen or a halogen selected from fluorine, chlorine, bromine and iodine; and N and P are independently integers equal to 0, 1 or 2, provided that (N+P)=2.
    Type: Application
    Filed: June 4, 2007
    Publication date: October 11, 2007
    Applicant: HONEYWELL INTERNATIONAL INC.
    Inventors: Daniel Merkel, Rajiv Singh, Hsueh Tung
  • Publication number: 20070197842
    Abstract: Disclosed are processes for the production of fluorinated olefins, preferably adapted to commercialization of CF3CF?CH2 (1234yf). Three steps may be used in preferred embodiments in which a feedstock such as CCl2?CClCH2Cl (which may be purchased or synthesized from 1,2,3-trichloropropane) is fluorinated (preferably with HF in gas-phase in the presence of a catalyst) to synthesize a compound such as CF3CCl?CH2, preferably in a 80-96% selectivity. The CF3CCl?CH2 is preferably converted to CF3CFClCH3 (244-isomer) using a SbCl5 as the catalyst which is then transformed selectively to 1234yf, preferably in a gas-phase catalytic reaction using activated carbon as the catalyst. For the first step, a mixture of Cr2O3 and FeCl3/C is preferably used as the catalyst to achieve high selectivity to CF3CCl?CH2 (96%). In the second step, SbCl5/C is preferably used as the selective catalyst for transforming 1233xf to 244-isomer, CF3CFClCH3.
    Type: Application
    Filed: January 3, 2007
    Publication date: August 23, 2007
    Applicant: Honeywell International Inc.
    Inventors: Sudip Mukhopadhyay, Hsueh Tung, Barbara Light, Steven Phillips, Jing Ma, Cheryl Bortz, Michael Van Der Puy, Daniel Merkel, Rajesh Dubey
  • Publication number: 20070197841
    Abstract: Disclosed is a process for producing fluorinated organic compounds, including hydrofluoropropenes, which preferably comprises converting at least one compound of Formula (I): C(X)3CF2C(X)3??(I) to at least one compound of Formula (II) CF3CF?CHZ??(II) where each X and Z is independently H, F, Cl, I or Br, said process preferably not including any substantial amount of oxygen-containing catalyst in certain embodiments. Preferably Z is H.
    Type: Application
    Filed: January 3, 2007
    Publication date: August 23, 2007
    Applicant: Honeywell International Inc.
    Inventors: Sudip Mukhopadhyay, Hsueh Tung, Michael Van Der Puy, Daniel Merkel, Jing Ji Ma, Cheryl Bortz, Barbara Light, Steven Phillips, Kim Fleming, Susan Ferguson
  • Publication number: 20070129580
    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 Cl addition agent under conditions effective to produce a compound of formula (I).
    Type: Application
    Filed: November 3, 2006
    Publication date: June 7, 2007
    Applicant: Honeywell International Inc.
    Inventors: Sudip Mukhopadhyay, Haridasan Nair, Hsueh Tung, Michael Van Der Puy, Rajiv Singh, Haiyou Wang, Robert Johnson
  • Publication number: 20070112227
    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: Application
    Filed: November 3, 2006
    Publication date: May 17, 2007
    Applicant: Honeywell International Inc.
    Inventors: Sudip Mukhopadhyay, Haridasan Nair, Hsueh Tung, Michael Van Der Puy, Robert Johnson, Daniel Merkel
  • Publication number: 20070112230
    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: November 3, 2006
    Publication date: May 17, 2007
    Applicant: Honeywell International Inc.
    Inventors: Sudip Mukhopadhyay, Haridasan Nair, Hsueh Tung, Michael Van Der Puy, Daniel Merkel, Rajesh Dubey, Jing Ji Ma
  • Publication number: 20070112228
    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: Application
    Filed: November 3, 2006
    Publication date: May 17, 2007
    Applicant: Honeywell International Inc.
    Inventors: Sudip Mukhopadhyay, Haridasan Nair, Hsueh Tung, Michael Van Der Puy, Daniel Merkel, Rajesh Dubey, Jing Ji Ma, Barbara Light, Kim Fleming, Cheryl Bortz, Richard Udy
  • Publication number: 20060235248
    Abstract: The invention provides an economic process for the manufacture of the hydrofluorocarbon 1,1,3,3,3-pentafluoropropene (HFC-1225zc). HFC-1225zc can be made from the dehydrochlorination of 1-chloro-1,1,3,3,3-pentafluoropropane (HCFC-235fa). Alternatively, HFC-1225zc can also be made from the dehydrofluorination of 1,1,1,3,3,3-hexafluoropropane (HFC-236fa). HFC-1225zc) is a compound that has the potential to be used as a low Global Warming Potential refrigerant, blowing agent, aerosol propellant, or solvent.
    Type: Application
    Filed: June 14, 2006
    Publication date: October 19, 2006
    Inventors: Hsueh Tung, Daniel Merkel, Rajiv Singh
  • Publication number: 20060142173
    Abstract: Compositions and methods based on the use of fluoroalkene containing from 3 to 4 carbon atoms and at least one carbon-carbon double bond, such as HFO-1214, HFO-HFO-1233, or HFO-1354, having properties highly beneficial in solvent cleaning applications.
    Type: Application
    Filed: September 8, 2005
    Publication date: June 29, 2006
    Applicant: Honeywell International Inc.
    Inventors: Robert Johnson, Hsueh Tung, Rajiv Singh, Ian Shankland
  • Publication number: 20060129006
    Abstract: The present invention provides a process for the preparation of trifluoromethyl iodide. The process includes the step of: contacting in a reactor a compound represented by the formula: CF3—W and a compound represented by the formula: Z-I wherein W is selected from CF3, hydrogen and bromine; Z is selected from hydrogen, iodine and chlorine. The step of contacting is carried out, optionally in the presence of a catalyst and further optionally in the presence of air, at a temperature, pressure and for a length of time sufficient to produce the trifluoromethyl iodide.
    Type: Application
    Filed: December 9, 2004
    Publication date: June 15, 2006
    Inventors: Sudip Mukhopadhyay, Hsueh Tung
  • Publication number: 20060122441
    Abstract: A process for preparing a haloalkane comprising: (a) contacting a haloalkane starting material with an alkene in the presence of an effective amount of a catalyst complex under conditions effective to facilitate an addition reaction and to form a product stream comprising a haloalkane product from the addition reaction, wherein the catalyst complex has a boiling point higher than that of the haloalkane product; and (b) recovering the haloalkane product from the product stream.
    Type: Application
    Filed: December 8, 2004
    Publication date: June 8, 2006
    Inventor: Hsueh Tung
  • Publication number: 20060030507
    Abstract: The invention relates to azeotropic and azeotrope-like mixtures of 1,1,1,3,3-pentachloropropane (HCC-240fa) and carbon tetrachloride and a process for separating the azeotrope-like mixtures. The compositions of the invention are useful as an intermediate in the production of HFC-245fa. The latter is useful as a nontoxic, zero ozone depleting fluorocarbon useful as a solvent, blowing agent, refrigerant, cleaning agent and aerosol propellant.
    Type: Application
    Filed: August 4, 2004
    Publication date: February 9, 2006
    Applicant: Honeywell International Inc.
    Inventors: Hang Pham, Rajiv Singh, Hsueh Tung
  • Publication number: 20060030508
    Abstract: The invention relates to azeotropic and azeotrope-like mixtures of HFC-32 and HCl or a mixture of HCl and Cl2, and a process for separating the azeotrope-like mixtures.
    Type: Application
    Filed: August 4, 2004
    Publication date: February 9, 2006
    Applicant: Honeywell International Inc.
    Inventors: Hang Pham, Rajiv Singh, Hsueh Tung, Franklin Wong
  • Publication number: 20050245774
    Abstract: Disclosed is a process for the synthesis of 1,3,3,3-tetrafluoropropene which comprises, in one embodiment, reacting a compound of CF3X1 with a compound of CX2H?CHX3, wherein X1, X2, and X3 are each independently selected from the group consisting of fluorine, chlorine, bromine and iodine, to produce a reaction product comprising a compound of CF3CH?CHX3, wherein X3 is as described above; and when X3 is not fluorine, fluorinating the compound to produce 1,3,3,3-tetrafluoropropene. The process in another embodiment comprises preparing tetrafluoropropene comprising thermally cracking one or more compounds capable of producing a reaction mixture which preferably comprises diflurocarbene radicals and vinylidene fluoride, and converting said reaction mixture into—tetrafluoropropene (1,3,3,3-tetrafluoropropene).
    Type: Application
    Filed: April 29, 2005
    Publication date: November 3, 2005
    Applicant: Honeywell International Inc.
    Inventors: Sudip Mukhopadhyay, Haridasan Nair, Hsueh Tung, Michael Van Der Puy, Jing Ma
  • Publication number: 20050245773
    Abstract: Disclosed is a process for the synthesis of 1,3,3,3-tetrafluoropropene that comprises, in one preferred embodiment, providing a compound of the formula CF3CH2CHFX, wherein X is a selected from the group consisting of chlorine, bromine and iodine, and exposing said compound to reaction conditions effective to convert said compound to 1,3,3,3-tetrafluoropropene. Other processes for forming 1,3,3,3-tetrafluoropropene are also disclosed.
    Type: Application
    Filed: April 29, 2005
    Publication date: November 3, 2005
    Applicant: Honeywell International Inc.
    Inventors: Sudip Mukhopadhyay, Haridasan Nair, Hsueh Tung, Michael Van Der Puy
  • Publication number: 20050101809
    Abstract: Disclosed are improved fluorination processes and fluorine-containing compositions which involve introducing to one or more fluorination process compositions a water reactive agent in an amount and under conditions effective to decrease the amount of water in that composition. The water reactive agent is preferably introduced to the fluorination reaction process at a location proximate to the site of the fluorination reaction, or upstream of the fluorination reaction, in amounts and under conditions effective to produce a relatively lower concentration of water in the composition, and preferably throughout the fluorination process.
    Type: Application
    Filed: November 12, 2003
    Publication date: May 12, 2005
    Applicant: Honeywell International, Inc.
    Inventors: Jason Stuck, Hsueh Tung, Michael Van Der Puy, Timothy demmin, Franklin Wong, Andrew Poss, Matthew Luly