Patents by Inventor Xuehui Sun

Xuehui Sun 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: 10343962
    Abstract: The present invention relates, in part, to the discovery that, during the fluorination of certain fluoroolefin starting reagents, particularly, 1,1,2,3-tetrachloropropene (1230xa), oligomerization/polymerization of such starting reagents reduces the conversion process and leads to increased catalyst deactivation. The present invention also illustrates that providing one or more organic co-feed to the fluooolefin starting stream reduces such oligomerization/polymerization and improves catalystic stability.
    Type: Grant
    Filed: March 21, 2017
    Date of Patent: July 9, 2019
    Assignee: Honeywell International Inc.
    Inventors: Selma Bektesevic, Daniel C. Merkel, Mario Joseph Nappa, Xuehui Sun, Hsueh Sung Tung, Haiyou Wang
  • Patent number: 10301236
    Abstract: The disclosure relates to a method for hydrofluorination of an olefin of the formula: RCX=CYZ to produce a hydrofluoroalkane of formula RCXFCHYZ or RCHXCFYZ, wherein X, Y, and Z are independently the same or different and are selected from the group consisting of H, F, Cl, Br, and C1-C6 alkyl which is partially or fully substituted with chloro or fluoro or bromo; and R is a C1-C6 alkyl which is unsubstituted or substituted with chloro or fluoro or bromo, comprising reacting the olefin with HF in the liquid-phase, in the presence of SbF5, at a temperature ranging from about ?30° C. to about 65° C.
    Type: Grant
    Filed: May 20, 2016
    Date of Patent: May 28, 2019
    Assignee: THE CHEMOURS COMPANY FC, LLC
    Inventors: Xuehui Sun, Mario Joseph Nappa, Karl Krause
  • Patent number: 10246388
    Abstract: This disclosure relates to processes which involve: contacting a mixture comprising at least one fluoroolefin and at least one RfC?CX impurity with at least one zeolite to reduce the concentration of the at least one RfC?CX impurity in the mixture; wherein Rf is a straight-chain perfluorinated alkyl group, and X is H, F, Cl, Br or I; and the at least one zeolite is selected from the group consisting of zeolites having pore opening of at least 4 Angstroms and no more than about 5 Angstroms, zeolites having pore opening of at least about 5 Angstroms and Sanderson electronegativity of no more than about 2.6, and mixtures thereof; provided that the at least one zeolite is not zeolite 4A.
    Type: Grant
    Filed: May 31, 2017
    Date of Patent: April 2, 2019
    Assignee: THE CHEMOURS COMPANY FC, LLC
    Inventors: Mario Joseph Nappa, Xuehui Sun, David Richard Corbin
  • Publication number: 20180273449
    Abstract: The present application provides a process of preparing 3,3,3-trifluoroprop-1-ene, comprising reacting 3-chloro-1,1,1-trifluoropropane with a base in an aqueous solvent component in the absence of a phase transfer catalyst.
    Type: Application
    Filed: March 9, 2018
    Publication date: September 27, 2018
    Inventors: Xuehui Sun, Karl Robert Krause
  • Publication number: 20180258018
    Abstract: This disclosure relates to processes which involve: contacting a mixture comprising at least one fluoroolefin and at least one RfC?CX impurity with at least one zeolite to reduce the concentration of the at least one RfC?CX impurity in the mixture; wherein Rf is a straight-chain perfluorinated alkyl group, and X is H, F, Cl, Br or I; and the at least one zeolite is selected from the group consisting of zeolites having pore opening of at least 4 Angstroms and no more than about 5 Angstroms, zeolites having pore opening of at least about 5 Angstroms and Sanderson electronegativity of no more than about 2.6, and mixtures thereof; provided that the at least one zeolite is not zeolite 4A.
    Type: Application
    Filed: May 8, 2018
    Publication date: September 13, 2018
    Applicant: THE CHEMOURS COMPANY FC, LLC
    Inventors: Mario Joseph NAPPA, Xuehui Sun, David Richard Corbin
  • Publication number: 20180237364
    Abstract: The present invention relates to a process for preparing 1,1,1-trifluoro-2,3-dichloropropane which comprises contacting chlorine with 3,3,3-trifluoropropene in the presence of a catalyst to form 1,1,1-trifluoro-2,3-dichloropropane, wherein the catalyst comprises at least one metal halide, where the metal is a metal from Group 13, 14 or 15 of the periodic table or a transition metal or combination thereof.
    Type: Application
    Filed: February 20, 2018
    Publication date: August 23, 2018
    Applicant: THE CHEMOURS COMPANY FC, LLC
    Inventors: Xuehui SUN, Mario Joseph NAPPA
  • Publication number: 20180127338
    Abstract: The disclosure relates to a method for hydrofluorination of an olefin of the formula: RCX=CYZ to produce a hydrofluoroalkane of formula RCXFCHYZ or RCHXCFYZ, wherein X, Y, and Z are independently the same or different and are selected from the group consisting of H, F, Cl, Br, and C1-C6 alkyl which is partially or fully substituted with chloro or fluoro or bromo; and R is a C1-C6 alkyl which is unsubstituted or substituted with chloro or fluoro or bromo, comprising reacting the olefin with HF in the liquid-phase, in the presence of SbF5, at a temperature ranging from about ?30° C. to about 65° C.
    Type: Application
    Filed: May 20, 2016
    Publication date: May 10, 2018
    Applicant: THE CHEMOURS COMPANY FC, LLC
    Inventors: Xuehui SUN, Mario Joseph NAPPA, Karl KRAUSE
  • Patent number: 9938208
    Abstract: The present invention relates to a process for preparing 1,1,1-trifluoro-2,3-dichloropropane which comprises contacting chlorine with 3,3,3-trifluoropropene in the presence of a catalyst to form 1,1,1-trifluoro-2,3-dichloropropane, wherein the catalyst comprises at least one metal halide, where the metal is a metal from Group 13, 14 or 15 of the periodic table or a transition metal or combination thereof.
    Type: Grant
    Filed: December 18, 2014
    Date of Patent: April 10, 2018
    Assignee: THE CHEMOURS COMPANY FC, LLC
    Inventors: Xuehui Sun, Mario Joseph Nappa
  • Publication number: 20180037525
    Abstract: A process is provided comprising contacting and reacting the compound CF3CF2CHXCl, wherein X is H or Cl, or the compound CF3CF?CXCl, wherein X is H or Cl, with hydrogen in the presence of a catalyst consisting essentially of Cu, Ru, Cu—Pd, Ni—Cu, and Ni—Pd, to obtain as a result thereof reaction product comprising hydrofluoropropenes or intermediates convertible to said hydrofluoropropenes, notably CF3CF?CH2 and CF3CH?CHF.
    Type: Application
    Filed: October 17, 2017
    Publication date: February 8, 2018
    Inventor: XUEHUI SUN
  • Publication number: 20180002507
    Abstract: The present disclosure relates to compositions comprising E-1,1,1,4,4,4-hexafluoro-2-butene and additional compounds that may be useful as refrigerants, heat transfer compositions, aerosol propellants, foaming agents, blowing agents, solvents, cleaning agents, carrier fluids, displacement drying agents, buffing abrasion agents, polymerization media, expansion agents for polyolefins and polyurethane, gaseous dielectrics, power cycle working fluids, extinguishing agents, and fire suppression agents in liquid or vapor form, and in methods for detecting leaks.
    Type: Application
    Filed: February 3, 2016
    Publication date: January 4, 2018
    Inventors: MARIO JOSEPH NAPPA, XUEHUI SUN, IVAN SERGEYEVICH BALDYCHEV, SHENG PENG, KONSTANTINOS KONTOMARIS, BARBARA HAVILAND MINOR, JOSEPH ANTHONY CREAZZO
  • Publication number: 20180002506
    Abstract: The present disclosure relates to compositions comprising Z-1,1,1,4,4,4-hexafluoro-2-butene and additional compounds that may be useful as refrigerants, heat transfer compositions, aerosol propellants, foaming agents, blowing agents, solvents, cleaning agents, carrier fluids, displacement drying agents, buffing abrasion agents, polymerization media, expansion agents for polyolefins and polyurethane, gaseous dielectrics, power cycle working fluids, extinguishing agents, and fire suppression agents in liquid or vapor form.
    Type: Application
    Filed: February 3, 2016
    Publication date: January 4, 2018
    Inventors: MARIO JOSEPH NAPPA, XUEHUI SUN, IVAN SERGEYEVICH BALDYCHEV, SHENG PENG, KONSTANTINOS KONTOMARIS, BARBARA HAVILAND MINOR, JOSEPH ANTHONY CREAZZO
  • Patent number: 9822047
    Abstract: A process is provided comprising contacting and reacting the compound CF3CF2CHXCl, wherein X is H or Cl, or the compound CF3CF?CXCl, wherein X is H or Cl, with hydrogen in the presence of a catalyst consisting essentially of Cu, Ru, Cu—Pd, Ni—Cu, and Ni—Pd, to obtain as a result thereof reaction product comprising hydrofluoropropenes or intermediates convertible to said hydrofluoropropenes, notably CF3CF?CH2 and CF3CH?CHF.
    Type: Grant
    Filed: March 22, 2017
    Date of Patent: November 21, 2017
    Assignee: THE CHEMOURS COMPANY FC, LLC
    Inventor: Xuehui Sun
  • Publication number: 20170267614
    Abstract: This disclosure relates to processes which involve: contacting a mixture comprising at least one fluoroolefin and at least one RfC?CX impurity with at least one zeolite to reduce the concentration of the at least one RfC?CX impurity in the mixture; wherein Rf is a straight-chain perfluorinated alkyl group, and X is H, F, Cl, Br or I; and the at least one zeolite is selected from the group consisting of zeolites having pore opening of at least 4 Angstroms and no more than about 5 Angstroms, zeolites having pore opening of at least about 5 Angstroms and Sanderson electronegativity of no more than about 2.6, and mixtures thereof; provided that the at least one zeolite is not zeolite 4A.
    Type: Application
    Filed: May 31, 2017
    Publication date: September 21, 2017
    Applicant: THE CHEMOURS COMPANY FC, LLC
    Inventors: Mario Joseph NAPPA, Xuehui SUN, David Richard CORBIN
  • Publication number: 20170253545
    Abstract: The present invention relates, in part, to the discovery that, during the fluorination of certain fluoroolefm starting reagents, particularly, 1,1,2,3-tetrachloropropene (1230xa), oligomerization/polymerization of such starting reagents reduces the conversion process and leads to increased catalyst deactivation. The present invention also illustrates that providing one or more organic co-feed to the fluooolefin starting stream reduces such oligomerization/polymerization and improves catalystic stability.
    Type: Application
    Filed: March 21, 2017
    Publication date: September 7, 2017
    Applicant: HONEYWELL INTERNATIONAL INC.
    Inventors: Selma BEKTESEVIC, Daniel C. MERKEL, Mario Joseph NAPPA, Xuehui SUN, Hsueh Sung TUNG, Haiyou WANG
  • Publication number: 20170253544
    Abstract: The present invention relates, in part, to the discovery that, during the fluorination of certain fluoroolefin starting reagents, particularly, 1,1,2,3-tetrachloropropene (1230xa), oligomerization/polyinerization of such starting reagents reduces the conversion process and leads to increased catalyst deactivation. The present invention also illustrates that providing one or more organic co-feed to the fluooolefin starting stream reduces such oligomerization/polymerization and improves catalystic stability.
    Type: Application
    Filed: March 21, 2017
    Publication date: September 7, 2017
    Applicant: HONEYWELL INTERNATIONAL INC.
    Inventors: Selma BEKTESEVIC, Daniel C. MERKEL, Mario Joseph NAPPA, Xuehui SUN, Hsueh Sung TUNG, Haiyou WANG
  • Publication number: 20170190642
    Abstract: A process is provided comprising contacting and reacting the compound CF3CF2CHXCl, wherein X is H or Cl, or the compound CF3CF?CXCl, wherein X is H or Cl, with hydrogen in the presence of a catalyst consisting essentially of Cu, Ru, Cu—Pd, Ni—Cu, and Ni—Pd, to obtain as a result thereof reaction product comprising hydrofluoropropenes or intermediates convertible to said hydrofluoropropenes, notably CF3CF?CH2 and CF3CH?CHF.
    Type: Application
    Filed: March 22, 2017
    Publication date: July 6, 2017
    Inventor: XUEHUI SUN
  • Patent number: 9670117
    Abstract: The present invention relates, in part, to the discovery that, during the fluorination of certain fluoroolefin starting reagents, particularly, 1,1,2,3-tetrachloropropene (1230xa), oligomerization/polymerization of such starting reagents reduces the conversion process and leads to increased catalyst deactivation. The present invention also illustrates that providing one or more organic co-feed to the fluoroolefin starting stream reduces such oligomerization/polymerization and improves catalystic stability.
    Type: Grant
    Filed: November 2, 2012
    Date of Patent: June 6, 2017
    Assignee: HONEYWELL INTERNATIONAL INC.
    Inventors: Selma Bektesevic, Daniel C. Merkel, Mario Joseph Nappa, Xuehui Sun, Hsueh Sung Tung, Haiyou Wang
  • Patent number: 9637429
    Abstract: A process is provided comprising contacting and reacting the compound CF3CF2CHXCl, wherein X is H or Cl, or the compound CF3CF?CXCl, wherein X is H or Cl, with hydrogen in the presence of a catalyst consisting essentially of Cu, Ru, Cu—Pd, Ni—Cu, and Ni—Pd, to obtain as a result thereof reaction product comprising hydrofluoropropenes or intermediates convertible to said hydrofluoropropenes, notably CF3CF?CH2 and CF3CH?CHF.
    Type: Grant
    Filed: April 7, 2015
    Date of Patent: May 2, 2017
    Assignee: THE CHEMOURS COMPANY FC, LLC
    Inventor: Xuehui Sun
  • Publication number: 20160340276
    Abstract: The present invention relates to a process for preparing 1,1,1-trifluoro-2,3-dichloropropane which comprises contacting chlorine with 3,3,3-trifluoropropene in the presence of a catalyst to form 1,1,1-trifluoro-2,3-dichloropropane, wherein the catalyst comprises at least one metal halide, where the metal is a metal from Group 13, 14 or 15 of the periodic table or a transition metal or combination thereof.
    Type: Application
    Filed: December 18, 2014
    Publication date: November 24, 2016
    Applicant: E.I. DU PONT DE NEMOURS AND COMPANY
    Inventors: Xuehui SUN, Mario Joseph NAPPA
  • Patent number: 9359273
    Abstract: The present invention relates, in part, to the discovery that the presence of impurities in 1,1,2,3-tetrachloropropene (1230xa) results in catalyst instability during the fluorination of 1230xa to 2-chloro-3,3,3-trifluoropropene. By substantially removing the impurities, 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 (1234yf).
    Type: Grant
    Filed: October 11, 2012
    Date of Patent: June 7, 2016
    Assignee: HONEYWELL INTERNATIONAL INC.
    Inventors: Selma Bektesevic, Daniel C. Merkel, Mario Joseph Nappa, Xuehui Sun, Hsueh Sung Tung, Haiyou Wang