Title:
PROCESS FOR PREPARING FLUOROCARBOXYLIC ACIDS
Document Type and Number:
WIPO Patent Application WO2004029008
Kind Code:
A3
Abstract:
A fluorocarboxylic acid preparation process which includes hydrolyzing fluorocarboxylic acid fluoride in the presence of an aqueous sulfuric acid solution to form a reaction product containing a fluorocarboxylic acid and hydrogen fluoride (present as hydrofluoric acid); and removing at least some of the hydrogen fluoride from the reaction product by washing the reaction production with aqueous sulfuric acid solution. The hydrolyzing and washing are carried out at a temperature at which the fluorocarboxylic acid is a liquid.
Inventors:
FU TA-WEI (US)
SWEARINGEN STEVEN H (US)
ICHIDA TAKUYA (JP)
YOSHII SHIGEYUKI (JP)
SWEARINGEN STEVEN H (US)
ICHIDA TAKUYA (JP)
YOSHII SHIGEYUKI (JP)
Application Number:
PCT/US2003/026306
Publication Date:
July 01, 2004
Filing Date:
September 24, 2003
Export Citation:
Assignee:
DU PONT (US)
DAIKIN IND LTD (JP)
FU TA-WEI (US)
SWEARINGEN STEVEN H (US)
ICHIDA TAKUYA (JP)
YOSHII SHIGEYUKI (JP)
DAIKIN IND LTD (JP)
FU TA-WEI (US)
SWEARINGEN STEVEN H (US)
ICHIDA TAKUYA (JP)
YOSHII SHIGEYUKI (JP)
International Classes:
C07C51/04; C07C51/48; C07C59/135; (IPC1-7): C07C51/00; C07C53/21
Foreign References:
| US3227736A | 1966-01-04 | |||
| US6013795A | 2000-01-11 | |||
| US6248923B1 | 2001-06-19 |
Other References:
See also references of EP 1542957A4
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