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Title:
AZEOTROPIC COMPOSITION COMPRISING 1,1,1,3,3-PENTAFLUOROPROPANE AND 1,1,1-TRIFLUORO-3-CHLORO-2-PROPENE, METHOD OF SEPARATION AND PURIFICATION OF THE SAME, AND PROCESS FOR PRODUCING 1,1,1,3,3-PENTAFLUOROPROPANE AND 1,1,1-TRIFLUORO-3-CHLORO-2-PROPENE
Document Type and Number:
WIPO Patent Application WO/2000/029361
Kind Code:
A1
Abstract:
A mixture comprising at least 1,1,1,3,3-pentafluoropropane and 1,1,1-trifluoro-3-chloro-2-propene is subjected to a distillation step to obtain a distillate comprising an azeotropic composition consisting substantially of 1,1,1,3,3-pentafluoropropane and 1,1,1-trifluoro-3-chloro-2-propene. From the distillate is obtained a bottom comprising 1,1,1,3,3-pentafluoropropane or 1,1,1-trifluoro-3-chloro-2-propene which each has been separated from the other and purified.

Inventors:
NAKADA TATSUO (JP)
IMOTO MASAYOSHI (JP)
SHIBANUMA TAKASHI (JP)
Application Number:
PCT/JP1999/006255
Publication Date:
May 25, 2000
Filing Date:
November 10, 1999
Export Citation:
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Assignee:
DAIKIN IND LTD (JP)
NAKADA TATSUO (JP)
IMOTO MASAYOSHI (JP)
SHIBANUMA TAKASHI (JP)
International Classes:
C07C17/20; C07C17/21; C07C17/383; C07C19/08; C07C21/18; (IPC1-7): C07C19/08; C07C19/10; C07C17/383
Domestic Patent References:
WO1997024307A11997-07-10
WO1997027163A11997-07-31
WO1999048849A11999-09-30
Foreign References:
EP0864554A11998-09-16
JPH09241189A1997-09-16
DE19716337A11997-11-20
US5616819A1997-04-01
Other References:
See also references of EP 1132365A4
Attorney, Agent or Firm:
Aoyama, Tamotsu (Shiromi 1-chome Chuo-ku, Osaka-shi Osaka, JP)
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