Hydrofluoroalkane composition
AssigneeThe Chemours Company Fc, LLC
InventorsXuehui Sun, Mario Joseph Nappa, Karl Krause
Life of this patent
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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.
Claims18
A liquid phase composition comprising:
- a catalyst comprising SbF5 and a hydrofluoroalkane composition comprising at least one hydrofluoroalkane selected from the group consisting of RCH2CHFCl, RCH2CFCl2, and RCH2CH2F;
- wherein R is trifluoromethyl or pentafluoroethyl;
- and
- wherein the hydrofluoroalkane composition comprises greater than 95 mol % of the at least one hydrofluoroalkane.
A liquid phase composition comprising:
- at least one member selected from the group consisting of RCCl═CH2, RCH═CHCl, RCH═CCl2 and RCH═CH2, a hydrofluorination catalyst comprising SbF5, and a hydrofluoroalkane composition comprising at least one hydrofluoroalkane selected from the group consisting of RCFClCH3, RCH2CHFCl, RCH2CFCl2, RCHFCH3, and RCH2CH2F;
- wherein when the at least one member is RCCl═CH2, the at least one hydrofluoroalkane is RCFClCH3,
- wherein when the at least one member is RCH═CHCl, the at least one hydrofluoroalkane is RCH2CHFCl,
- wherein when the at least one member is RCH═CCl2, the at least one hydrofluoroalkane is RCH2CFCl2,
- wherein when the at least one member is RCH═CH2, the at least one hydrofluoroalkane is RCHFCH3 and RCH2CH2F,
- wherein the hydrofluoroalkane composition comprises greater than 95 mol % of the at least one hydrofluoroalkane, and
- wherein R is trifluoromethyl or pentafluoroethyl.
Dependencies are inferred from the claim text.