Menetelmä laktidin poistamiseksi polylaktidista

The invention relates to a method for removing lactide from a polylactide so that a polymer melt travelling through a nozzle forms thin threads or a film, the surface area of which is so large that in a normal- pressure evaporator the lactide evaporates from the polymer rapidly into a hot carrier-ga...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	SELIN, JOHAN FREDRIK, KOSKINEN, JUKKA, KATSARAS, NIKITAS
Format:	Patent
Sprache:	fin ; swe
Schlagworte:	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 MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP WORKING-UP
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Beschreibung
Zusammenfassung:	The invention relates to a method for removing lactide from a polylactide so that a polymer melt travelling through a nozzle forms thin threads or a film, the surface area of which is so large that in a normal- pressure evaporator the lactide evaporates from the polymer rapidly into a hot carrier-gas flow and the polymer settles under gravity onto a collecting device.