Invention Grant
US08696926B2 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
有权
制备氟丙烷和卤代丙烯的方法和2-氯-3,3,3-三氟-1-丙烯与HF和1,1,1,2,2-五氟丙烷与HF的共沸组合物
- Patent Title: 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
- Patent Title (中): 制备氟丙烷和卤代丙烯的方法和2-氯-3,3,3-三氟-1-丙烯与HF和1,1,1,2,2-五氟丙烷与HF的共沸组合物
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Application No.: US13688720Application Date: 2012-11-29
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Publication No.: US08696926B2Publication Date: 2014-04-15
- Inventor: Velliyur Nott Mallikarjuna Rao , Allen Capron Sievert
- Applicant: E I du Pont de Nemours and Company
- Applicant Address: US DE Wilmington
- Assignee: E I du Pont de Nemours and Company
- Current Assignee: E I du Pont de Nemours and Company
- Current Assignee Address: US DE Wilmington
- Main IPC: C09K5/04
- IPC: C09K5/04 ; C07C21/18
Abstract:
A process is disclosed for making CF3CH2CHF2, CF3CH═CHF and/or CF3CH═CHCl. The process involves reacting at least one starting material selected from the group consisting of halopropanes of the formula CX3CHClCH2X, halopropenes of the formula CX3CCl═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, CF3CH2CHF2, CF3CH═CHF and CF3CH═CHCl; and recovering the CF3CH2CHF2, CF3CH═CHF and/or CF3CH═CHCl from the product mixture. Also disclosed is a process for making CF3CF2CH3 and/or CF3CF═CH2. In each of the processes the molar ratio of HF to total amount of starting material fed to the reaction zone is at least stoichiometric. Also disclosed is an azeotropic composition comprising CF3CCl═CH2, and HF. Also disclosed is an azeotropic composition comprising CF3CF2CH3, and HF.
Public/Granted literature
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