DEPOLYMERIZATION OF POLYURETHANES WITH ORGANIC AMINE BASES

The present invention relates to an improved process for depolymerization of polyurethanes under mild conditions and low salt concentration in the reaction mixture, wherein polyether polyols and polyamines can be recovered in high yields. La présente invention concerne un procédé amélioré de dépolym...

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Bibliographische Detailangaben
Hauptverfasser:	HINRICHS-TONTRUP, Natalia, HILDEBRAND, Jens, SCHWEISSINGER, Emily Clare, BURDENIUC, Juan Jesus, TERHEIDEN, Annegret
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	ACYCLIC OR CARBOCYCLIC COMPOUNDS AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G CHEMISTRY COMPOSITIONS BASED THEREON GENERAL PROCESSES OF COMPOUNDING MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY ORGANIC CHEMISTRY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS WORKING-UP
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Beschreibung
Zusammenfassung:	The present invention relates to an improved process for depolymerization of polyurethanes under mild conditions and low salt concentration in the reaction mixture, wherein polyether polyols and polyamines can be recovered in high yields. La présente invention concerne un procédé amélioré de dépolymérisation de polyuréthanes dans des conditions douces et de faible concentration en sel dans le mélange réactionnel, des polyols de polyéther et des polyamines pouvant être récupérés à des rendements élevés.