Title:
PROCESS FOR PRODUCING PENTAFLUOROETHANE AND TETRAFLUOROCHLOROETHANE
Document Type and Number:
WIPO Patent Application WO/1996/026172
Kind Code:
A1
Abstract:
A process for producing HFC-125 and/or HCFC-124 from PCE, characterized by comprising the first reaction step of fluorinating PCE in the presence of a catalyst in a liquid phase to form HCFC-123 and/or HCFC-122 and the second reaction step of fluorinating the HCFC-123 and/or HCFC-122 in the presence of a catalyst in a gas phase to form HFC-125 and/or HCFC-124. This process is improved in the yield of objective products, the lifetime of catalyst, and the controllability of reaction temperature.
Inventors:
YOSHIMURA TOSHIKAZU (JP)
HOMOTO YUKIO (JP)
YAMADA YASUFU (JP)
TSUDA TAKEHIDE (JP)
SHIBANUMA TAKASHI (JP)
HOMOTO YUKIO (JP)
YAMADA YASUFU (JP)
TSUDA TAKEHIDE (JP)
SHIBANUMA TAKASHI (JP)
Application Number:
PCT/JP1996/000401
Publication Date:
August 29, 1996
Filing Date:
February 22, 1996
Export Citation:
Assignee:
DAIKIN IND LTD (JP)
YOSHIMURA TOSHIKAZU (JP)
HOMOTO YUKIO (JP)
YAMADA YASUFU (JP)
TSUDA TAKEHIDE (JP)
SHIBANUMA TAKASHI (JP)
YOSHIMURA TOSHIKAZU (JP)
HOMOTO YUKIO (JP)
YAMADA YASUFU (JP)
TSUDA TAKEHIDE (JP)
SHIBANUMA TAKASHI (JP)
International Classes:
C07C17/20; C07C17/21; C07C19/08; C07C19/12; (IPC1-7): C07C19/08; C07C19/12; C07C17/20; C07C17/21
Domestic Patent References:
| WO1994020441A1 | 1994-09-15 |
Foreign References:
| JP4500358A | ||||
| JPH04226927A | 1992-08-17 | |||
| JPH06506221A | 1994-07-14 | |||
| JPH0672915A | 1994-03-15 | |||
| JPH0640961A | 1994-02-15 |
Other References:
See also references of EP 0811592A4
Download PDF: