Invention Grant
US07928271B2 Process for producing 1,2,3,3,3-pentafluoropropene and related azeotropic compositions
有权
制备1,2,3,3,3-五氟丙烯和相关共沸组合物的方法
- Patent Title: Process for producing 1,2,3,3,3-pentafluoropropene and related azeotropic compositions
- Patent Title (中): 制备1,2,3,3,3-五氟丙烯和相关共沸组合物的方法
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Application No.: US12377776Application Date: 2007-09-05
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Publication No.: US07928271B2Publication Date: 2011-04-19
- Inventor: Allen Capron Sievert
- Applicant: Allen Capron Sievert
- 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
- International Application: PCT/US2007/019319 WO 20070905
- International Announcement: WO2008/030444 WO 20080313
- Main IPC: C07C19/08
- IPC: C07C19/08 ; C07C17/383
Abstract:
A process for making CHF═CFCF3 is disclosed. The process involves (a) reacting CCl2FCF2CF3 with H2 in the presence of a catalytically effective amount of hydrogenation catalyst to form CH2FCF2CF3; and (b) dehydrofluorinating CH2FCF2CF3 from (a) to form CHF═CFCF3.Also disclosed are compositions including CCl3CF2CF3 and HF, wherein the HF is present in an effective amount to form an azeotropic combination with the CCl3CF2CF3; and compositions including CCl2FCF2CF3 and HF, wherein the HF is present in an effective amount to form an azeotropic combination with the CCl2FCF2CF3.
Public/Granted literature
- US20100294979A1 PROCESS FOR PRODUCING 1,2,3,3,3-PENTAFLUOROPROPENE AND RELATED AZEOTROPIC COMPOSITIONS Public/Granted day:2010-11-25
Information query
