Method for producing ethylene-vinyl ester copolymer, and ethylene-vinyl ester copolymer saponification product

The present invention provides: an ethylene-vinyl ester copolymer saponification product from which a film having few fisheyes can be produced; and a method for producing an ethylene-vinyl ester copolymer which is a precursor of the ethylene-vinyl ester copolymer saponification product. In the produ...

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Bibliographische Detailangaben
Hauptverfasser:	FUKUYAMA, SHUUICHI, NAGAO, YOSHIHARU, YOSHIDA, TOMONORI, YAMADA, KOUJI
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP
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Beschreibung
Zusammenfassung:	The present invention provides: an ethylene-vinyl ester copolymer saponification product from which a film having few fisheyes can be produced; and a method for producing an ethylene-vinyl ester copolymer which is a precursor of the ethylene-vinyl ester copolymer saponification product. In the production of an ethylene-vinyl ester copolymer, the oxygen concentration in a vinyl ester monomer used is adjusted to 2 to 8 ppm during storage and/or transportation and is adjusted to less than 2 ppm during polymerization.