PROCESS FOR THE ENZYMATIC DEGRADATION OF POLYURETHANES

The invention relates to a process for degrading polyurethanes in which the starting material is coarsely comminuted, then slurried and admixed with an enzyme, the hydrolysis of the polyurethane into its starting polyols is carried out in a polar solvent or solvent mixture with cleavage of the carba...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	BAUMGARTNER, Günter, ENDER, Wofgang, WIESBAUER, Herfried, SCHNEIDER, Konstantin, GEWESSLER, Ulrike, GÜBITZ, Georg
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G CHEMISTRY COMPOSITIONS BASED THEREON GENERAL PROCESSES OF COMPOUNDING METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP WORKING-UP
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Beschreibung
Zusammenfassung:	The invention relates to a process for degrading polyurethanes in which the starting material is coarsely comminuted, then slurried and admixed with an enzyme, the hydrolysis of the polyurethane into its starting polyols is carried out in a polar solvent or solvent mixture with cleavage of the carbamate bond by means of a class EC 3 hydrolase, where the polar solvent is partially removed from the system and regenerated in a separate process and/or a reaction product is separated off.