Processes for the production of fluoropropanes and halopropenes and azeotropic compositions of 2-chloro-3,3,3-trifluoro-1-propene with HF and of 1,1,1,2,2-pentafluoropropane with HF
AssigneeE. I. Du Pont de Nemours and Company
InventorsVelliyur Nott Mallikarjuna Rao, Allen Capron Sievert
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Abstract
A process is disclosed for making CF3CF2CH3, CF3CF═CH2 and/or CF3CCl═CH2. The process involves reacting at least one starting material selected from the group consisting of halopropanes of the formula CX3CHClCH2X, halopropenes of the formula CClX2CCl═CH2 and halopropenes of the formula CX2═CClCH2X, wherein each X is independently F or Cl, with HF in a reaction zone to produce a product mixture comprising HF, HCl, CF3CF2CH3, CF3CF═CH2 and CF3CCl═CH2; and recovering the CF3CF2CH3, CF3CF═CH2 and/or CF3CCl═CH2 from the product mixture.
Claims25
A vapor-phase process for making at least one product compound selected from the group consisting of CF3CF2CH3, CF3CF═CH2 and CF3CCl═CH2, comprising:
- reacting a halopropane of the formula CX3CHClCH2X wherein each X is independently selected from the group consisting of F and Cl, with HF in a reaction zone, optionally in the presence of a fluorination catalyst, to produce a product mixture comprising HF, HCl, CF3CF2CH3, CF3CF═CH2 and CF3CCI═CH2, wherein the molar ratio of HF to total amount of starting material fed to the reaction zone is from about 10:1 to about 30:1;
- and
- recovering said at least one product compound from the product mixture.
A liquid-phase process for making at least one product compound selected from the group consisting of CF3CF2CH3, CF3CF═CH2 and CF3CCl═CH2, comprising:
- reacting a halopropane of the formula CX3CHClCH2X wherein each X is independently selected from the group consisting of F and Cl, with HF in a reaction zone, optionally in the presence of a fluorination catalyst, to produce a product mixture comprising HF, HCl, CF3CF2CH3, CF3CF═CH2 and CF3CCl═CH2, wherein the molar ratio of HF to total amount of starting material fed to the reaction zone is from about 8:1 to about 50:1;
- and
- recovering said at least one product compound from the product mixture.
Dependencies are inferred from the claim text.