PROCESS FOR PREPARING A HIGH MOLECULAR WEIGHT POLYTETRA METHYLENE TEREPHTHALATE

PURPOSE:To prepare a polytetramethylene terephthalate having an intrinsic viscosity of higher than 1. 2 by direct polymerization in solution without using any other process for increasing the degree of polymerization, by specifying the character of bis-(4-hydroxybutyl) terephthalate and its oligomer...

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Bibliographische Detailangaben
Hauptverfasser:	TANAKA MICHIHIKO, AZUMA KUNIHIRO, NAKAZAWA SHIYUNJI, HAYASHI MASAHIKO
Format:	Patent
Sprache:	eng
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:	PURPOSE:To prepare a polytetramethylene terephthalate having an intrinsic viscosity of higher than 1. 2 by direct polymerization in solution without using any other process for increasing the degree of polymerization, by specifying the character of bis-(4-hydroxybutyl) terephthalate and its oligomers.