Invention Grant
US08007677B2 Azeotrope compositions comprising 1,1,1,2,3-pentafluoropropene and hydrogen fluoride and uses thereof
有权
包含1,1,1,2,3-五氟丙烯和氟化氢的共沸组合物及其用途
- Patent Title: Azeotrope compositions comprising 1,1,1,2,3-pentafluoropropene and hydrogen fluoride and uses thereof
- Patent Title (中): 包含1,1,1,2,3-五氟丙烯和氟化氢的共沸组合物及其用途
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Application No.: US12440068Application Date: 2007-09-07
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Publication No.: US08007677B2Publication Date: 2011-08-30
- Inventor: Jeffrey P. Knapp , Barry Asher Mahler , Velliyur Nott Mallikarjuna Rao
- Applicant: Jeffrey P. Knapp , Barry Asher Mahler , Velliyur Nott Mallikarjuna Rao
- 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/US2007/019657 WO 20070907
- International Announcement: WO2008/030615 WO 20080313
- Main IPC: A62D1/00
- IPC: A62D1/00 ; C09K5/00 ; C09K5/04 ; B01F1/00 ; C23G5/00 ; H01B3/24 ; B01D3/34 ; C07C17/00 ; C07C17/25 ; C07C19/08 ; C07C21/18 ; C07C17/38 ; C11D17/00 ; C11D17/08
Abstract:
Disclosed herein are azeotrope and near-azeotrope compositions comprising E-1,1,1,2,3-pentafluoropropene (E-HFC-1225ye) and hydrogen fluoride. The azeotrope and near-azeotrope compositions are useful in processes to produce and in processes to purify E-HFC-1225ye and/or Z-1,1,1,2,3-pentafluoropropene (Z-HFC-1225ye). Also disclosed are processes for the extractive distillation to separate E-HFC-1225ye from Z-HFC-1225ye.
Public/Granted literature
- US20100187464A1 AZEOTROPE COMPOSITIONS COMPRISING 1,1,1,2,3-PENTAFLUOROPROPENE AND HYDROGEN FLUORIDE AND USES THEREOF Public/Granted day:2010-07-29
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