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).

  • Publication number: 20240101498
    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: December 4, 2023
    Publication date: March 28, 2024
    Inventors: Mario Joseph NAPPA, Xuehui SUN, David Richard CORBIN
  • Patent number: 11905226
    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: Grant
    Filed: July 28, 2022
    Date of Patent: February 20, 2024
    Assignee: THE CHEMOURS COMPANY FC LLC
    Inventors: Mario Joseph Nappa, Xuehui Sun, David Richard Corbin
  • Patent number: 11904301
    Abstract: A method of chlorinating a antimony fluorohalide catalyst is disclosed. In one embodiment the method comprises contacting an antimony fluorohalide catalyst that contains one or more fluorines with a regenerating agent chosen from 2-chloro-3,3,3-trifluoropropene (1233xf), 1,1,1,3-tetrachloropropane (250fb), 2-chloro-1,1,1,2-tetrafluoropropane (HCFC-244bb) and combinations of 1233xf, 250fb, and 244bb, under conditions effective to exchange at least one fluorine in the antimony fluorohalide catalyst with chlorine. The method can be used to regenerate spent antimony fluorohalide catalyst, for example regenerating SbCl5 from SbF5.
    Type: Grant
    Filed: September 6, 2019
    Date of Patent: February 20, 2024
    Assignee: THE CHEMOURS COMPANY FC, LLC
    Inventors: Xuehui Sun, Mario Joseph Nappa, Karl Krause
  • Publication number: 20240025824
    Abstract: A dehydrohalogenation product includes a hydrochlorofluorocarbon mixture of a fluoroolefin of formula RCX=CZQ and a halofluoroalkane of formula RCXYCZQT. R is a perfluorinated alkyl group and X, Z, and Q are independently H or halogen. One of Y and T is H and the other is Cl, Br, or I. About 80% or greater of the hydrochlorofluorocarbon mixture is the fluoroolefin. The dehydrohalogenation product also includes a caustic agent and a solvent. In some embodiments, the dehydrohalogenation product is free of any catalyst, including any phase transfer catalyst.
    Type: Application
    Filed: October 3, 2023
    Publication date: January 25, 2024
    Inventors: Xuehui SUN, Karl KRAUSE
  • Publication number: 20230406790
    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: August 29, 2023
    Publication date: December 21, 2023
    Applicant: THE CHEMOURS COMPANY FC, LLC.
    Inventors: XUEHUI SUN, KARL ROBERT KRAUSE
  • Patent number: 11840492
    Abstract: A dehydrohalogenation product includes a hydrochlorofluorocarbon mixture of a fluoroolefin of formula RCX?CZQ and a halofluoroalkane of formula RCXYCZQT. R is a perfluorinated alkyl group and X, Z, and Q are independently H or halogen. One of Y and T is H and the other is Cl, Br, or I. About 80% or greater of the hydrochlorofluorocarbon mixture is the fluoroolefin. The dehydrohalogenation product also includes a caustic agent and a solvent. In some embodiments, the dehydrohalogenation product is free of any catalyst, including any phase transfer catalyst.
    Type: Grant
    Filed: July 13, 2022
    Date of Patent: December 12, 2023
    Assignee: THE CHEMOURS COMPANY, FC, LLC
    Inventors: Xuehui Sun, Karl Krause
  • Publication number: 20230348770
    Abstract: Environmentally friendly refrigerant blends utilizing blends including 2,3,3,3-tetrafluoropropene (HFO-1234yf) and fluoroethane (HFC-161). The blends have ultra-low GWP, low toxicity, and low flammability with low temperature glide or nearly negligible glide for use in a hybrid, mild hybrid, plug-in hybrid, or full electric vehicles for thermal management (transferring heat from one part of the vehicle to the other) of the passenger compartment providing air conditioning (A/C) or heating to the passenger cabin.
    Type: Application
    Filed: December 17, 2020
    Publication date: November 2, 2023
    Applicant: THE CHEMOURS COMPANY FC, LLC
    Inventors: MARY E KOBAN, LUKE DAVID SIMONI, XUEHUI SUN, KARL ROBERT KRAUSE
  • Patent number: 11780794
    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: January 9, 2023
    Date of Patent: October 10, 2023
    Assignee: THE CHEMOURS COMPANY FC, LLC
    Inventors: Xuehui Sun, Karl Robert Krause
  • Publication number: 20230183155
    Abstract: A composition including 2-chloro-3,3,3-trifluoropropene (1233xf), one or more of 2,3-dichloro-1,1,1-trifluoropropane (243db), 1,2-dichloro-3,3,3-trifluoropropene (1223xd), 2,3-dichloro-3,3-difluoropropene (1232xf), 2,2,3-trichloro-1,1,1-trifluoro-propane (233ab), 2,3,3-trichloro-1,1,1-trifluoro-propane (233da), 3,3,3-trifluoropropyne, 1-chloro-3,3,3-trifluoropropyne, 3,3,3-trifluoro-1-propene (1243zf), 1-chloro-3,3,3-trifluoro-1-propene (1233zd), 1-chloro-2,3,3,3-tetrafluoro-1-propene (1224yd), or 2-bromo-3,3,3-trifluoropropene and optionally 1233xf oligomers are disclosed.
    Type: Application
    Filed: June 3, 2020
    Publication date: June 15, 2023
    Applicant: THE CHEMOURS COMPANY FC, LLC
    Inventors: XUEHUI SUN, KARL ROBERT KRAUSE, ANDREW JACKSON
  • Publication number: 20230159414
    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 9, 2023
    Publication date: May 25, 2023
    Applicant: THE CHEMOURS COMPANY FC, LLC
    Inventors: Xuehui SUN, Karl Robert KRAUSE
  • Publication number: 20230142757
    Abstract: A method of making chlorofluorohydrocarbons including, contacting, a fluorinated hydrocarbon reagent in the vapor phase, with hydrogen chloride (HCl). The reaction is conducted in the presence of an effective amount of a catalyst, at an elevated temperature sufficient to effect hydrochlorination to form a reaction mixture including a chlorofluorohydrocarbon.
    Type: Application
    Filed: January 3, 2023
    Publication date: May 11, 2023
    Applicant: THE CHEMOURS COMPANY FC, LLC
    Inventor: Xuehui SUN
  • Publication number: 20230075222
    Abstract: A method hydrofluorinates an olefin of the formula: RCX=CYZ to produce a hydrofluoroalkane of formula RCXFCHYZ or RCXHCFYZ, where 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. The method includes reacting the olefin with HF in the vapor 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: November 3, 2022
    Publication date: March 9, 2023
    Inventors: Xuehui SUN, Mario Joseph NAPPA, Karl KRAUSE
  • Publication number: 20230061454
    Abstract: Disclosed are compositions comprising HCFC-244bb and/or HFO-1234yf and at least one additional compound. Compositions comprising HCFC-244bb are useful in processes to make HFO-1234yf. Compositions comprising HFO-1234yf are useful, among other uses, as heat transfer compositions for use in refrigeration, air-conditioning and heat pump systems.
    Type: Application
    Filed: February 5, 2021
    Publication date: March 2, 2023
    Applicant: THE CHEMOURS COMPANY FC, LLC
    Inventors: XUEHUI SUN, KARL ROBERT KRAUSE
  • Patent number: 11584701
    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: August 16, 2022
    Date of Patent: February 21, 2023
    Assignee: THE CHEMOURS COMPANY FC, LLC
    Inventors: Xuehui Sun, Karl Robert Krause
  • Patent number: 11572326
    Abstract: A method hydrofluorinates an olefin of the formula: RCX=CYZ to produce a hydrofluoroalkane of formula RCXFCHYZ or RCXHCFYZ, where 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. The method includes reacting the olefin with HF in the vapor 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 1, 2021
    Date of Patent: February 7, 2023
    Assignee: THE CHEMOURS COMPANY FC, LLC
    Inventors: Xuehui Sun, Mario Joseph Nappa, Karl Krause
  • Patent number: 11565987
    Abstract: A method of making chlorofluorohydrocarbons including, contacting, a fluorinated hydrocarbon reagent in the vapor phase, with hydrogen chloride (HCl). The reaction is conducted in the presence of an effective amount of a catalyst, at an elevated temperature sufficient to effect hydrochlorination to form a reaction mixture including a chlorofluorohydrocarbon.
    Type: Grant
    Filed: August 12, 2019
    Date of Patent: January 31, 2023
    Assignee: THE CHEMOURS COMPANY FC, LLC
    Inventor: Xuehui Sun
  • Publication number: 20230002658
    Abstract: Environmentally friendly refrigerant blends utilizing blends including 2,3,3,3-tetrafluoropropene (HFO-1234yf) and fluoroethane (HFC-161). The blends have ultra-low GWP, low toxicity, and low flammability with low temperature glide or nearly negligible glide for use in a hybrid, mild hybrid, plug-in hybrid, or full electric vehicles for thermal management (transferring heat from one part of the vehicle to the other) of the passenger compartment providing air conditioning (A/C) or heating to the passenger cabin.
    Type: Application
    Filed: December 17, 2020
    Publication date: January 5, 2023
    Applicant: THE CHEMOURS COMPANY FC, LLC
    Inventors: MARY E KOBAN, LUKE DAVID SIMONI, XUEHUI SUN, KARL ROBERT KRAUSE
  • Publication number: 20220402842
    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: August 16, 2022
    Publication date: December 22, 2022
    Applicant: THE CHEMOURS COMPANY FC. LLC
    Inventors: XUEHUI SUN, Karl Robert KRAUSE
  • Publication number: 20220363614
    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: July 28, 2022
    Publication date: November 17, 2022
    Inventors: Mario Joseph NAPPA, Xuehui SUN, David Richard CORBIN
  • Publication number: 20220348524
    Abstract: A dehydrohalogenation product includes a hydrochlorofluorocarbon mixture of a fluoroolefin of formula RCX?CZQ and a halofluoroalkane of formula RCXYCZQT. R is a perfluorinated alkyl group and X, Z, and Q are independently H or halogen. One of Y and T is H and the other is Cl, Br, or I. About 80% or greater of the hydrochlorofluorocarbon mixture is the fluoroolefin. The dehydrohalogenation product also includes a caustic agent and a solvent. In some embodiments, the dehydrohalogenation product is free of any catalyst, including any phase transfer catalyst.
    Type: Application
    Filed: July 13, 2022
    Publication date: November 3, 2022
    Inventors: Xuehui SUN, Karl Krause