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: 10988422
    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 RCXHCFYZ, 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. and compositions formed by the process.
    Type: Grant
    Filed: April 13, 2020
    Date of Patent: April 27, 2021
    Assignee: THE CHEMOURS COMPANY FC, LLC
    Inventors: Xuehui Sun, Mario Joseph Nappa, Karl Krause
  • Patent number: 10975216
    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: Grant
    Filed: February 3, 2016
    Date of Patent: April 13, 2021
    Assignee: THE CHEMOURS COMPANY FC, LLC
    Inventors: Mario Joseph Nappa, Xuehui Sun, Ivan Sergeyevich Baldychev, Sheng Peng, Konstantinos Kontomaris, Barbara Haviland Minor, Joseph Anthony Creazzo
  • Patent number: 10927061
    Abstract: The present specification relates to a dehydrohalogenation process comprising contacting a halofluoroalkane of formula RCXYCZQT with a caustic agent optionally in the presence of an amine in an aqueous solvent in the absence of a catalyst while providing mixing with power input ranging from about 0.1 to about 50 HP/1000 gallons to produce a product comprising a fluoroolefin of formula RCX?CZQ, wherein R is perfluorinated alkyl group and X, Z and Q are independently H or halogen, and one of Y and T is H and the other is halogen.
    Type: Grant
    Filed: September 9, 2016
    Date of Patent: February 23, 2021
    Assignee: THE CHEMOURS COMPANY FC, LLC
    Inventors: Xuehui Sun, Karl Krause
  • Publication number: 20210002190
    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: September 18, 2020
    Publication date: January 7, 2021
    Applicant: THE CHEMOURS COMPANY FC, LLC
    Inventor: XUEHUI SUN
  • Patent number: 10843987
    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: February 20, 2018
    Date of Patent: November 24, 2020
    Assignee: THE CHEMOURS COMPANY FC, LLC
    Inventors: Xuehui Sun, Mario Joseph Nappa
  • Publication number: 20200354538
    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: July 23, 2020
    Publication date: November 12, 2020
    Applicant: THE CHEMOURS COMPANY FC, LLC
    Inventors: MARIO JOSEPH NAPPA, XUEHUI SUN, IVAN SERGEYEVICH BALDYCHEV, SHENG PENG, KONSTANTINOS KONTOMARIS, BARBARA HAVILAND MINOR, JOSEPH ANTHONY CREAZZO
  • Patent number: 10815173
    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: January 29, 2020
    Date of Patent: October 27, 2020
    Assignee: THE CHEMOURS COMPANY FC, LLC
    Inventor: Xuehui Sun
  • Patent number: 10759920
    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: Grant
    Filed: February 3, 2016
    Date of Patent: September 1, 2020
    Assignee: THE CHEMOURS COMPANY FC, LLC
    Inventors: Mario Joseph Nappa, Xuehui Sun, Ivan Sergeyevich Baldychev, Sheng Peng, Konstantinos Kontomaris, Barbara Haviland Minor, Joseph Anthony Creazzo
  • Publication number: 20200255359
    Abstract: The present specification relates to a dehydrohalogenation process comprising contacting a halofluoroalkane of formula RCXYCZQT with a caustic agent optionally in the presence of an amine in an aqueous solvent in the absence of a catalyst while providing mixing with power input ranging from about 0.1 to about 50 HP/1000 gallons to produce a product comprising a fluoroolefin of formula RCX=CZQ, wherein R is perfluorinated alkyl group and X, Z and Q are independently H or halogen, and one of Y and T is H and the other is halogen.
    Type: Application
    Filed: September 9, 2016
    Publication date: August 13, 2020
    Applicant: THE CHEMOURS COMPANY FC, LLC
    Inventors: Xuehui SUN, Karl KRAUSE
  • Publication number: 20200239391
    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 RCXHCFYZ, 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. and compositions formed by the process.
    Type: Application
    Filed: April 13, 2020
    Publication date: July 30, 2020
    Inventors: Xuehui SUN, Mario Joseph NAPPA, Karl KRAUSE
  • Publication number: 20200223772
    Abstract: The disclosure relates to a method for fluorinating an alkane substrate comprising contacting said alkane substrate with a fluoroalkane in the presence of a fluorination catalyst selected from chrome oxide, fluorinated chrome oxide, aluminum oxide and fluorinated aluminum oxide at elevated temperatures.
    Type: Application
    Filed: September 9, 2016
    Publication date: July 16, 2020
    Applicant: THE CHEMOURS COMPANY FC, LLC
    Inventor: Xuehui SUN
  • Publication number: 20200165178
    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: January 29, 2020
    Publication date: May 28, 2020
    Applicant: THE CHEMOURS COMPANY FC, LLC
    Inventor: XUEHUI SUN
  • Publication number: 20200157025
    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: January 22, 2020
    Publication date: May 21, 2020
    Inventors: Xuehui Sun, Karl Robert Krause
  • Patent number: 10584082
    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: June 10, 2019
    Date of Patent: March 10, 2020
    Assignee: THE CHEMOURS COMPANY FC, LLC
    Inventor: Xuehui Sun
  • Patent number: 10577296
    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: Grant
    Filed: March 9, 2018
    Date of Patent: March 3, 2020
    Assignee: THE CHEMOURS COMPANY FC, LLC
    Inventors: Xuehui Sun, Karl Robert Krause
  • Publication number: 20190300461
    Abstract: This disclosure relates to processes which involve: contacting a mixture comprising at least one fluoroolefin and at least one impurity with at least one zeolite to reduce the concentration of the at least one impurity in the mixture; 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. This disclosure also relates to processes for making at least one hydrotetrafluoropropene product selected from the group consisting of CF3CF?CH2, CF3CH?CHF, and mixtures thereof; and relates to processes for making at least one hydrochlorotrifluoropropene product selected from the group consisting of CF3CCl?CH2, CF3CH?CHCl, and mixtures thereof.
    Type: Application
    Filed: June 20, 2019
    Publication date: October 3, 2019
    Inventors: Mario Joseph NAPPA, Xuehui SUN, David Richard CORBIN
  • Publication number: 20190292119
    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: June 10, 2019
    Publication date: September 26, 2019
    Inventor: XUEHUI SUN
  • Publication number: 20190284117
    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 RCXHCFYZ, 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. and compositions formed by the process.
    Type: Application
    Filed: May 28, 2019
    Publication date: September 19, 2019
    Inventors: Xuehui SUN, Mario Joseph NAPPA, Karl KRAUSE
  • Patent number: 10351495
    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: October 17, 2017
    Date of Patent: July 16, 2019
    Assignee: THE CHEMOURS COMPANY FC, LLC
    Inventor: Xuehui Sun
  • Patent number: 10343961
    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 8, 2018
    Date of Patent: July 9, 2019
    Assignee: THE CHEMOURS COMPANY FC, LLC
    Inventors: Mario Joseph Nappa, Xuehui Sun, David Richard Corbin