AZEOTROPIC MIXTURE OF HF AND 1233ZD - ATOCHEM NORTH AMERICA ELF

Title:

AZEOTROPIC MIXTURE OF HF AND 1233ZD

Document Type and Number:

Japanese Patent JPH11279088

Kind Code:

A

Abstract:

To obtain trifluoropropene being an intermediate for a specific pentafluoropropane suitable as a blowing agent and a refrigerant in a high yield, by using an azeotropic mixture composed of HF and a specific trifluorochloropropene.

The azeotropic mixture containing HF and 1,1,1-trifluoro-3- chloro-2-propene (hereinafter, 1233 zd) is used, preferably a rectification column is utilized and the azeotropic mixture of HF/1233 zd is removed from a system rich in HF by a liquid phase method (or HF is separated by the removal) or the azeotropic mixture of HF/1233 zd is removed from the system by a vapor- phase method to give 1233 zd being an intermediate for producing 1,1,1,3,3- pentalfuoropropene (hereinafter, 245 fatty acid) in a high yield.

Inventors:

WISMER JOHN A
BOLMER MICHAEL S
CHEN BIN

Application Number:

JP1540099A

Publication Date:

October 12, 1999

Filing Date:

January 25, 1999

Export Citation:

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Assignee:

ATOCHEM NORTH AMERICA ELF

International Classes:

C07C17/00; C07C17/38; C07C17/386; C07C17/383; C07C21/18; (IPC1-7): C07C21/18; C07C17/386

Attorney, Agent or Firm:

Motohiro Kurauchi (1 outside)

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