QUATERNARY ARYLCARBOXYLATE COMPOSITIONS FOR EXTRACTING C1 TO C4 CARBOXYLIC ACIDS FROM AQUEOUS STREAMS

This invention relates to solvents for extracting Cito C^arboxylic acids from aqueous streams. More specifically, the extraction solvents include one or more salts composed of a phosphonium cation and an arylcarboxylate anion. The extraction solvents may further include one or more non-ionic liquid...

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Bibliographische Detailangaben
Hauptverfasser:	HEMBRE, Robert, Thomas, BARNICKI, Scott, Donald, HARDACRE, Christopher, LIU, Jingyi, ROONEY, David, William, WANG, Silu, SINK, Chester, Wayne
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	ACYCLIC OR CARBOCYCLIC COMPOUNDS ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAININGELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN,SULFUR, SELENIUM OR TELLURIUM CHEMISTRY METALLURGY ORGANIC CHEMISTRY PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL SEPARATION TRANSPORTING
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Beschreibung
Zusammenfassung:	This invention relates to solvents for extracting Cito C^arboxylic acids from aqueous streams. More specifically, the extraction solvents include one or more salts composed of a phosphonium cation and an arylcarboxylate anion. The extraction solvents may further include one or more non-ionic liquid organic solvents as an enhancer. The extraction solvents are useful for extracting aqueous mixtures containing one or more lower carboxylic acids, such as monocarboxylic acids, alkoxycarboxylic acids, and halogen-containing carboxylic acids. Formula (I) L'invention concerne des solvants pour extraire des acides carboxyliques en C1 à C4 présents dans des courants aqueux. Plus particulièrement, les solvants d'extraction comprennent un ou plusieurs sels composés d'un cation phosphonium et d'un anion arylcarboxylate. Les solvants d'extraction peuvent en outre comprendre un ou plusieurs solvants organiques liquides non ioniques en tant qu'activateur. Les solvants d'extraction sont utilisés pour extraire des mélanges aqueux contenant un ou plusieurs acides carboxyliques inférieurs, par exemple les acides monocarboxyliques, les acides alcoxycarboxyliques et les acides carboxyliques halogénés. Formule (I)