基本信息:
- 专利标题：
- 申请号：BR9707181 申请日：1997-01-22
- 公开(公告)号：BR9707181A 公开(公告)日：1999-03-23
- 发明人： SHIBANUMA TAKASHI , NAKADA TATSUO , SHIBATA NORIAKI
- 申请人： DAIKIN IND LTD
- 专利权人： DAIKIN IND LTD
- 当前专利权人： DAIKIN IND LTD
- 优先权： JP15670196 1996-06-18; JP908596 1996-01-23
- 主分类号： C07C17/383
- IPC分类号： C07C17/383 ; C07C17/38 ; C07C19/08
摘要：
There is provided an azeotropic mixture consisting substantially of 1, 1, 1, 3, 3-pentafluoropropane and hydrogen fluoride. Further, there is provided a process of separating/purifying R-245fa and/or HF from a mixture comprising R-245fa and HF wherein the mixture comprising 1, 1, 1, 3, 3-pentafluoropropane and hydrogen fluoride is subjected to a distillation step so that a distillate is obtained which comprises the azeotropic mixture consisting substantially of 1, 1, 1, 3, 3-pentafluoropropane and hydrogen fluoride, and a bottom product is obtained which comprises separated/purified 1, 1, 1, 3, 3-pentafluoropropane or hydrogen fluoride.