VERFAHREN ZUR HERSTELLUNG EINES POLYACETALPOLYMEREN

When a crude polyacetal polymer obtained by polymerization or copolymerization and having as a principal component thereof connected oxymethylene radicals in a main chain is treated in a non-soluble liquid medium at temperatures higher than 80 DEG C but lower than the melting point of the polymer an...

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Bibliographische Detailangaben
Hauptverfasser:	HIGASHIYAMA, SEIICHI, NAKATSUJI, HIROSHI, GOTOH, NOBORU, KOMAZAWA, HIROYASU, HOTTA, HIROSHI, NAKASHIMA, TUNEYASU, YOKO, KIYOSHI
Format:	Patent
Sprache:	eng ; 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:	When a crude polyacetal polymer obtained by polymerization or copolymerization and having as a principal component thereof connected oxymethylene radicals in a main chain is treated in a non-soluble liquid medium at temperatures higher than 80 DEG C but lower than the melting point of the polymer and at heterogeneous equilibrium, contact treatment is carried out by moving the crude polymer and the non-soluble medium in opposite directions relative to each other.