Ethylene-vinyl alcohol copolymer resin composition, film and multilayer structure

• Main Authors: YAMAMOTO, TOMOYUKI, NAKAI, YOSHIHIRO, KUDO, KENJI, NAKAJIMA, TAKUYA, TAKESHITA, KEISUKE
• Format: Patent
• Language: Chinese; English
• Published: 01.04.2021
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMISTRY; COMPOSITIONS BASED THEREON; 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

The present invention provides, as an ethylene-vinyl alcohol copolymer resin composition having excellent gas barrier properties in a high humidity environment, especially excellent oxygen barrier properties in a high humidity environment, an ethylene-vinyl alcohol copolymer resin composition which contains an ethylene-vinyl alcohol copolymer and a metal compound, wherein the metal compound satisfies general formula (1). (1): Ma(OH)bAn- (2a-b)/n (In the formula, M represents a metal species; A represents an anionic ligand other than a hydroxy ligand, said anionic ligand having a valence of n-, provided that O (an oxo ligand) is excluded as A; n is an integer of 1 or more; each of a and b is a number greater than 0; and a/b is from 0.1 to 10.).