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.
Claims12
A hydrofluoroalkane composition formed by reacting HF with 2-chloro-3,3,3-trifluoropropene in the liquid phase in the presence of a catalyst, the catalyst consisting essentially of SbF5, to produce 2-chloro-1,1,1,2-tetrafluoropropane;
- wherein the hydrofluoroalkane composition comprises greater than about 95 mol% 2-chloro-1,1,1,2-tetrafluoropropane;
- and
- wherein the hydrofluoroalkane composition further comprises at least two of 1,1,1,2,2-pentafluoropropane (245cb), 1,1,1-trifluoro-2,2-dichloropropane (243ab) or 1,1,1,3,3-pentafluoropropane (245fa).
A hydrofluoroalkane composition wherein the hydrofluoroalkane composition comprises greater than about 99.4 mol% 2-chloro-1,1,1,2-tetrafluoropropane;
- and
- wherein the hydrofluoroalkane composition further comprises at least two of 1,1,1,2,2-pentafluoropropane (245cb), 1,1,1-trifluoro-2,2-dichloropropane (243ab) or 1,1,1,3,3-pentafluoropropane (245fa);
- wherein when the hydrofluoroalkane composition further comprises 1,1,1,2,2-pentafluoropropane (245cb), the amount of 1,1,1,2,2-pentafluoropropane (245cb) is about 0.032 mol%, wherein when the hydrofluoroalkane composition further comprises 1,1,1-trifluoro-2,2-dichloropropane (243ab), the amount of 1,1,1-trifluoro-2,2-dichloropropane (243ab) is about 0.009 mol%, and wherein when the hydrofluoroalkane composition further comprises the amount of 1,1,1,3,3-pentafluoropropane (245fa), the amount of 1,1,1,3,3-pentafluoropropane (245fa) is about 0.059 mol%.
A hydrofluoroalkane composition
- wherein the hydrofluoroalkane composition comprises about 98.2 mol% 2-chloro-1,1,1,2-tetrafluoropropane, about 0.017 mol% 1,1,1,2,2-pentafluoropropane (245cb), and about 0.02 mol% 1,1,1,3,3-pentafluoropropane (245fa).
Dependencies are inferred from the claim text.