Invention Grant
- Patent Title: Method for purifying tetrafluoropropene
- Patent Title (中): 四氟丙烯的纯化方法
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Application No.: US14749877Application Date: 2015-06-25
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Publication No.: US09302964B2Publication Date: 2016-04-05
- Inventor: Shoji Furuta , Tetsuo Otsuka
- Applicant: ASAHI GLASS COMPANY, LIMITED
- Applicant Address: JP Tokyo
- Assignee: Asahi Glass Company, Limited
- Current Assignee: Asahi Glass Company, Limited
- Current Assignee Address: JP Tokyo
- Agency: Oblon, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP2012-285248 20121227
- Main IPC: C07C17/386
- IPC: C07C17/386 ; C07C17/18 ; C07C17/395
Abstract:
To provide a method for efficiently separating 2,3,3,3-tetrafluoropropene (HFO-1234yf) and chloromethane (R40) from a composition containing HFO-1234yf and R40. A method for separating HFO-1234yf containing substantially no R40, which comprises bringing an azeotropic composition or azeotrope-like composition of H FO-1234yf and R40 into contact with a specific extraction solvent.
Public/Granted literature
- US20150291490A1 METHOD FOR PURIFYING TETRAFLUOROPROPENE Public/Granted day:2015-10-15
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