POLETHYLENTEREPHTHALATE SPAN

The present invention is directed to a polyethylene terephthalate chip, obtainable by a process comprising liquid phase polycondensation of an esterification product, solid phase polycondensation of the product obtained and subsequently contacting the product of the solid phase polycondensation with...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	SAKAI, MASAYUKI, SHIRAKI, SHIGEMI, TANAKA, YASUHIRO
Format:	Patent
Sprache:	ger
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP
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Beschreibung
Zusammenfassung:	The present invention is directed to a polyethylene terephthalate chip, obtainable by a process comprising liquid phase polycondensation of an esterification product, solid phase polycondensation of the product obtained and subsequently contacting the product of the solid phase polycondensation with hot water or water vapour. The polycondensation rate is small, and the content of cyclic trimers is low.