PROCESS AND APPARATUS FOR CONTINUOUS PRODUCTION OF AQUEOUS POLYURETHANE DISPERSIONS

The application relates to a process for continuously producing aqueous polyurethane dispersions, which is characterized by the use of microstructured mixing elements and addition of water twice during the dispersion step. The energy input in the mixing of the dispersion is low. In addition, the app...

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Bibliographische Detailangaben
Hauptverfasser:	PROSS, Alexander, BREUER, Holger, GRABLOWITZ, Hans,Georg, WITKOWSKI, Reiner, HAHN, Christian, Joachim, SCHUBERT, Stephan, GESTERMANN, Sven, RITTER, Joachim
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS MAKING GRANULES OR PREFORMS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS PREPARATION OR PRETREATMENT OF THE MATERIAL TO BESHAPED RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIALCONTAINING PLASTICS THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	The application relates to a process for continuously producing aqueous polyurethane dispersions, which is characterized by the use of microstructured mixing elements and addition of water twice during the dispersion step. The energy input in the mixing of the dispersion is low. In addition, the application describes an apparatus suitable for execution of the aforementioned process. La présente invention concerne un procédé de production en continu de dispersions aqueuses de polyuréthane, qui est caractérisé par l'utilisation d'éléments de mélange microstructurés et l'ajout d'eau à deux reprises pendant l'étape de dispersion. L'entrée d'énergie dans le mélange de la dispersion est faible. De plus, l'invention concerne un appareil approprié pour l'exécution du procédé susmentionné.