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    PROCESS FOR THE REDUCTION OF RfC=CX IMPURITIES IN FLUOROOLEFINS
    11.
    发明申请
    PROCESS FOR THE REDUCTION OF RfC=CX IMPURITIES IN FLUOROOLEFINS 审中-公开

    公开(公告)号：US20190300461A1

    公开(公告)日：2019-10-03

    申请号：US16446840

    申请日：2019-06-20

    Applicant: THE CHEMOURS COMPANY FC, LLC

    Inventor： Mario Joseph NAPPA ,  Xuehui SUN ,  David Richard CORBIN

    IPC: C07C17/389 ,  C07C17/087 ,  C07C17/25

    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.

    PROCESS FOR THE REDUCTION OF RƒC=CX IMPURITIES IN FLUOROOLEFINS
    14.
    发明公开
    PROCESS FOR THE REDUCTION OF RƒC=CX IMPURITIES IN FLUOROOLEFINS 审中-公开

    公开(公告)号：US20240101498A1

    公开(公告)日：2024-03-28

    申请号：US18528224

    申请日：2023-12-04

    Applicant: THE CHEMOURS COMPANY FC, LLC

    Inventor： Mario Joseph NAPPA ,  Xuehui SUN ,  David Richard CORBIN

    IPC: C07C17/389 ,  C07C17/087 ,  C07C17/25

    CPC classification number: C07C17/389 ,  C07C17/087 ,  C07C17/25 ,  Y02P20/582

    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.

    FLUORINE REMOVAL FROM ANTIMONY FLUOROHALIDE CATALYST USING CHLOROCARBONS
    17.
    发明申请
    FLUORINE REMOVAL FROM ANTIMONY FLUOROHALIDE CATALYST USING CHLOROCARBONS 有权

    公开(公告)号：US20210316282A1

    公开(公告)日：2021-10-14

    申请号：US17273342

    申请日：2019-09-06

    Applicant: THE CHEMOURS COMPANY FC, LLC

    Inventor： Xuehui SUN ,  Mario Joseph NAPPA ,  Karl KRAUSE

    IPC: B01J27/32 ,  C01G30/00 ,  B01J27/10

    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.

    HYDROFLUORINATION OF 1233XF TO 244BB BY SBF5
    18.
    发明申请
    HYDROFLUORINATION OF 1233XF TO 244BB BY SBF5 有权

    公开(公告)号：US20210221756A1

    公开(公告)日：2021-07-22

    申请号：US17220427

    申请日：2021-04-01

    Applicant: THE CHEMOURS COMPANY FC, LLC

    Inventor： Xuehui SUN ,  Mario Joseph NAPPA ,  Karl KRAUSE

    IPC: C07C17/087 ,  C07C17/20 ,  C07C17/25 ,  C07C19/08 ,  C07C19/10

    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.

    PROCESS FOR THE REDUCTION OF RfC≡CX IMPURITIES IN FLUOROOLEFINS
    19.
    发明申请
    PROCESS FOR THE REDUCTION OF RfC≡CX IMPURITIES IN FLUOROOLEFINS 审中-公开

    公开(公告)号：US20180258018A1

    公开(公告)日：2018-09-13

    申请号：US15973598

    申请日：2018-05-08

    Applicant: THE CHEMOURS COMPANY FC, LLC

    Inventor： Mario Joseph NAPPA ,  Xuehui Sun ,  David Richard Corbin

    IPC: C07C17/389 ,  C07C17/25 ,  C07C17/087

    CPC classification number: C07C17/389 ,  C07C17/087 ,  C07C17/25 ,  Y02P20/582 ,  C07C21/18

    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. 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.

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