Method of elution of fluorinated emulgators

Elution of fluorinated emulsifiers from anionic exchange resins is effected using a mixture comprising: (a) water; (b) an alkali metal or alkylammonium compound; and (c) an organic solvent which completely dissolves (a) and (b). Elution of fluorinated emulsifiers from anionic exchange resins is effe...

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Bibliographische Detailangaben
Hauptverfasser:	LOEHR, GERNOT, SCHWERTFEGER, WERNER, FUEHRER, STEPHAN
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ACYCLIC OR CARBOCYCLIC COMPOUNDS CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY METALLURGY ORGANIC CHEMISTRY PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL SEPARATION THEIR RELEVANT APPARATUS TRANSPORTING TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Beschreibung
Zusammenfassung:	Elution of fluorinated emulsifiers from anionic exchange resins is effected using a mixture comprising: (a) water; (b) an alkali metal or alkylammonium compound; and (c) an organic solvent which completely dissolves (a) and (b). Elution of fluorinated emulsifiers from anionic exchange resins is effected using a mixture comprising: (a) water; (b) a compound MX; and (c) an organic solvent which completely dissolves (a) and (b) and gives sufficient anions X for the elution. M = an alkali metal or alkylammonium with 1-4C alkyl; X = OH, F or Cl; An Independent claim is also included for processing the eluate by: (i) steam distilling to remove the volatiles; and (ii) treating the distillation residue with strong acid to set the emulsifiers free in free acid form.