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- W1533630797 abstract "The purpose of this study is to propose a new method for the determination of diethylene glycol units, incorporated in PET-chains. After saponification overnight at 150°C with aqueous KOH, the diethylene glycol is determinated by thin layer chromatography. This method is not as accurate as the currently used gas chromatographic ones, but has the advantage to be much simpler and it is also quite sufficient for quality control purposes. Ziel dieser Untersuchung ist die Ausarbeitung einer neuen Methode für die Bestimmung der in Polyäthylen-(PET-) Ketten eingebauten Diäthylenglykol-Einheiten. Nach Verseifung über Nacht bei 150°C mit wäßriger KOH-Lösung wird der Diäthylenglykolgehalt durch Dünnschichtchromatographie bestimmt. Diese Methode ist nicht so genau wie die üblichen angewandten gaschromatographischen Verfahren, hat aber den Vorteil, viel einfacher zu sein und für die Qualitätskontrolle auszureichen." @default.
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- W1533630797 date "1969-04-28" @default.
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- W1533630797 doi "https://doi.org/10.1002/macp.1969.021230111" @default.
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