PROCESS FOR REMOVAL OF FLUOROORGANIC COMPOUNDS FROM AQUEOUS MEDIA

The present disclosure provides a process for removing fluoroorganic acidic compounds from a solution comprising at least one protic solvent, comprising: forming a mixture of a solution comprising at least one fluoroorganic acidic compound comprising less than 15 carbon atoms and protic solvent, whe...

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Bibliographische Detailangaben
Hauptverfasser:	LAMANNA, William M, SCHMICK, Scott D, HUBER, Stefan, HIRSCHBERG, Markus, HINTZER, Klaus, KRUPP, Valentina, BARRERA, Michael D, ZHANG, Zhongxing, JARIWALA, Chetan P, KOENIGSMANN, Herbert
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	ADHESIVES CHEMICAL PAINT OR INK REMOVERS CHEMISTRY COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS CORRECTING FLUIDS DYES FILLING PASTES INKS METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS ORGANIC MACROMOLECULAR COMPOUNDS PAINTS PASTES OR SOLIDS FOR COLOURING OR PRINTING POLISHES THEIR PREPARATION OR CHEMICAL WORKING-UP USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS USE OF MATERIALS THEREFOR WOODSTAINS
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Beschreibung
Zusammenfassung:	The present disclosure provides a process for removing fluoroorganic acidic compounds from a solution comprising at least one protic solvent, comprising: forming a mixture of a solution comprising at least one fluoroorganic acidic compound comprising less than 15 carbon atoms and protic solvent, wherein the solution has a pH of 4, with an extraction composition comprising at least one trialkylamine and organic solvent; reacting the fluoroorganic acidic compound with the trialkylamine to form a hydrophobic ionic compound comprising the anion of the fluoroorganic acidic compound and the cation of the trialkylamine; separating the mixture into a first phase comprising the protic solvent and at most 50 wt.% of the fluoroorganic acidic compound present in the initial solution; and a second phase comprising the organic solvent and hydrophobic ionic compound; removing the second phase from the first phase; and repeating steps aforementioned at least once more, wherein the first phase obtained in the last step is used as the initial solution. La présente invention concerne un procédé d'élimination de composés acides fluoro-organiques d'une solution comprenant au moins un solvant protique, consistant à : former un mélange d'une solution comprenant au moins un composé acide fluoro-organique comprenant moins de 15 atomes de carbone et un solvant protique, la solution comprenant un pH de 4, avec une composition d'extraction comprenant au moins une trialkylamine et un solvant organique ; faire réagir le composé acide fluoro-organique avec la trialkylamine pour former un composé ionique hydrophobe comprenant l'anion du composé acide fluoro-organique et le cation de la trialkylamine ; séparer le mélange en une première phase comprenant le solvant protique et au plus 50 % en poids du composé acide fluoro-organique présent dans la solution initiale, et en une seconde phase comprenant le solvant organique et le composé ionique hydrophobe ; éliminer la seconde phase de la première phase ; et répéter les étapes susmentionnées au moins une fois de plus, la première phase obtenue dans la dernière étape étant utilisée en tant que solution initiale.