Title:
フッ素化カルボン酸の回収方法
Document Type and Number:
Japanese Patent JP4050338
Kind Code:
B2
Abstract:
Fluorinated carboxylic acids can be recovered from materials which contain them by if necessary liberating the carboxylic acids with sufficiently strong acids, esterifying the liberated acids and distilling off the esters. Advantageously, the esters can be hydrolysed immediately with aqueous ammonia solution to give the corresponding ammonium salts.
Inventors:
Reinhold Overmeier
Gunter Syutte Funiak
Gunter Syutte Funiak
Application Number:
JP12039694A
Publication Date:
February 20, 2008
Filing Date:
June 01, 1994
Export Citation:
Assignee:
Dyneon Geselsyaft Mito Besilyen Haftung
International Classes:
C07C67/54; C07C69/63; C07C51/02; C07C51/09; C07C51/41; C07C51/48; C07C51/493; C07C53/21; C07C53/50; C07C67/08; C07C67/60; C08F14/18; C08F14/26; C08F114/26; C08F214/26
Domestic Patent References:
| JP47014090A | ||||
| JP55059156A | ||||
| JP50161542A | ||||
| JP62053308A | ||||
| JP56092943A | ||||
| JP1153654A | ||||
| JP61246142A | ||||
| JP58213749A | ||||
| JP5272797A |
Foreign References:
| US3194840 | ||||
| US2558515 |
Attorney, Agent or Firm:
Mitsufumi Esaki
Tsuneo Mihara
Okumura Yoshimichi
Tsuneo Mihara
Okumura Yoshimichi