PRODUCT OF ACETALIZATION OF ETHYLENE/VINYL ALCOHOL COPOLYMER AND COMPOSITION CONTAINING SAID ACETALIZATION PRODUCT

The present invention relates to an acetalization product of an ethylene/vinyl alcohol copolymer, comprising: 20 to 80 mol % of an ethylene unit; and 4 to 76 mol % of a vinyl alcohol unit based on a total monomer unit constituting the acetalization product, wherein a degree of acetalization is 5 to...

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Bibliographische Detailangaben
Hauptverfasser:	HIRAOKA, Nobutaka, NIIMURA, Takuro, NAKAHARA, Atsuhiro, TAKASUGI, Akio, SUGII, HiroakI, ASANUMA, Yoshiaki
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS 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
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Beschreibung
Zusammenfassung:	The present invention relates to an acetalization product of an ethylene/vinyl alcohol copolymer, comprising: 20 to 80 mol % of an ethylene unit; and 4 to 76 mol % of a vinyl alcohol unit based on a total monomer unit constituting the acetalization product, wherein a degree of acetalization is 5 to 80 mol %, and expression (1): 0.75≤W0.05h/2f≤1.00 (1) [wherein W0.05h/2f represents a symmetry factor determined by reversed-phase partition gradient high-performance liquid chromatography analysis with a water-ethanol eluent, according to JIS K 0124:2011], and expression (2): 1.27≤Tm/Tg≤1.35 (2) [wherein Tm and Tg respectively represent a melting peak temperature (kelvin) and an intermediate glass transition temperature (kelvin) measured according to JIS K7121:2012] are satisfied.