ETHYLENE-VINYL ALCOHOL COPOLYMER AND MOLDED ARTICLE THEREOF

The present invention provides to a new ethylene-vinyl alcohol copolymer which has improved stretching properties and provides a molded article having excellent gas barrier properties, appearance and strength, and a molded article thereof. The present invention is an ethylene-vinyl alcohol copolymer...

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Bibliographische Detailangaben
Hauptverfasser:	INOUE, KAORU, MATSUI, IKKO, SHIBUTANI, MITSUO, MORIYAMA, TAKAMASA, MIYAZUMI, SHINTA
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS GENERAL PROCESSES OF COMPOUNDING LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS WORKING-UP
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Beschreibung
Zusammenfassung:	The present invention provides to a new ethylene-vinyl alcohol copolymer which has improved stretching properties and provides a molded article having excellent gas barrier properties, appearance and strength, and a molded article thereof. The present invention is an ethylene-vinyl alcohol copolymer comprising the structural unit of formula (1) : (see formula 1) (wherein X represents any binding chain excluding an ether bond, each of R1 to R4 represents independently any substituent and n represents 0 or 1.). Nouveau copolymère éthylène/alcool de vinyle qui démontre une grande aptitude à l~étirage et peut donner un objet moulé excellent de par ses propriétés de barrière au gaz, par son aspect et sa résistance. Le copolymère éthylène/alcool de vinyle se caractérise du fait qu~il comprend des unités structurelles représentées par la formule suivante (1). [Formule chimique 1] (1) (X représente une chaîne de quelconque liaison hormis une liaison éther ; R?1¿ à R?4¿ représentent chacun indépendamment un quelconque substituant ; et n vaut 0 ou 1).