Process for the recovery of fluorinated carboxylic acids

Details Process for the recovery of fluorinated carboxylic acids Process for the recovery of fluorinated carboxylic acids

1995-05-03

1997-01-07

Schofer, Joseph L.

Organic compounds -- part of the class 532-570 series

Organic compounds

Fatty compounds having an acid moiety which contains the...

562605, 562483, 562513, C07C 5300, C07C 5321

Patent

active

055918778

ABSTRACT:
Fluorinated carboxylic acids can be recovered from materials which contain them by releasing, if necessary, the carboxylic acids with sufficiently strong acids, esterifying the released acids and distilling off the esters. The esters can be advantageously directly hydrolyzed with aqueous ammonia solution to give the corresponding ammonium salts.

REFERENCES:
patent: 3818074 (1974-06-01), Ahlbrecht
patent: 4730082 (1988-03-01), Amiet

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