Title:
METHOD FOR PURIFYING TETRAFLUOROPROPENE
Document Type and Number:
WIPO Patent Application WO/2014/103582
Kind Code:
A1
Abstract:
Provided is a method for separating 2,3,3,3-tetrafluoropropene (HFO-1234yf) and chloromethane (R40) from a composition containing HFO-1234yf and R40 with high efficiency.
A method for separating HFO-1234yf that does not substantially contain R40, said method comprising bringing an azeotropic or quasi-azeotropic composition comprising HFO-1234yf and R40 into contact with a specific extraction solvent.
Inventors:
FURUTA SHOJI (JP)
OTSUKA TETSUO (JP)
OTSUKA TETSUO (JP)
Application Number:
PCT/JP2013/081448
Publication Date:
July 03, 2014
Filing Date:
November 21, 2013
Export Citation:
Assignee:
ASAHI GLASS CO LTD (JP)
International Classes:
C07C21/18; C07C17/386
Domestic Patent References:
| WO2011030026A1 | 2011-03-17 | |||
| WO2012011609A1 | 2012-01-26 | |||
| WO2012105700A1 | 2012-08-09 |
Foreign References:
| JP2009513719A | 2009-04-02 | |||
| JP2008506793A | 2008-03-06 | |||
| JP2010202640A | 2010-09-16 | |||
| US2931840A | 1960-04-05 |
Other References:
See also references of EP 2939994A4
Attorney, Agent or Firm:
SENMYO, Kenji et al. (JP)
Spring name Kenji (JP)
Spring name Kenji (JP)
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