PROCESS FOR THE PURIFICATION OF ALPHA, OMEGA-DIIODOPERFLUORINATED COMPOUNDS

PROCESS FOR THE PURIFICATION OF ALPHA, OMEGA-DIIODOPERFLUORINATED COMPOUNDS

The invention concerns a process for purifying α,ω-diiodoperfluorinated compounds of formula 1-(CF2CF2Y)m-I comprising contacting an impure α,ω-diiodoperfluorinated compound with a suitable sequestering agent, with formation of a reversible adduct and separating the α,ω-diiodoperfluorinated compound...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: CARCENAC YVAN, METRANGOLO PIERANGELO, RESNATI GIUSEPPE
Format: Patent
Sprache:eng
Schlagworte:
ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
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Beschreibung
Zusammenfassung:The invention concerns a process for purifying α,ω-diiodoperfluorinated compounds of formula 1-(CF2CF2Y)m-I comprising contacting an impure α,ω-diiodoperfluorinated compound with a suitable sequestering agent, with formation of a reversible adduct and separating the α,ω-diiodoperfluorinated compound from the adduct itself. Diammonium dihalogenids of the general formula [R1,2,3N-(CH2)n-NR4,5,6]2*2X (R1-6=alkyl C1-C6n=8-26, X I, Br, Cl) also called 'methonium compounds' are the preferred sequestering agents.