ETHYLENE-VINYL ALCOHOL COPOLYMER COMPOSITION FOR MELT MOLDING, PELLET AND MULTILAYER STRUCTURE

• Main Authors: TAKESHITA KEISUKE, NAKAJIMA TAKUYA, NISHIMURA DAICHI
• Format: Patent
• Language: Chinese; English
• Published: 22.11.2019
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS

As an ethylene-vinyl alcohol copolymer resin composition which is decreased in the viscosity with time during melt molding and has excellent long-run mold-ability, the present invention provides an ethylene-vinyl alcohol copolymer composition for melt molding, which contains an ethylene-vinyl alcohol copolymer (A), an alkali metal compound (B) and an iron compound (C), and which is configured suchthat the weight ratio of the content of the iron compound (C) in terms of metal to the content of the alkali metal compound (B) in terms of metal is from 10 to 100,000. 本发明提供一种熔融成形用乙烯-乙烯醇系共聚物组合物，作为在熔融成形时粘度随时间降低、长期运转成形性良好的乙烯-乙烯醇系共聚物树脂组合物，其含有乙烯-乙烯醇系共聚物(A)、碱金属化合物(B)及铁化合物(C)，相对于上述铁化合物(C)的金属换算含量，上述碱金属化合物(B)的金属换算含量的重量比为10～100000。